Details of the Researcher

PHOTO

Daisuke Ando
Section
Graduate School of Engineering
Job title
Associate Professor
Degree
  • 博士(工学)(東北大学)

  • 修士(工学)(東北大学)

e-Rad No.
50615820

Professional Memberships 3

  • TMS

  • 軽金属学会

  • 金属学会

Research Interests 9

  • Medical Materials

  • Deformation Twinning

  • Ceramic coating

  • High temperature material

  • Functional Structural-Materials

  • Aluminum

  • Magnesium

  • Microstructure of Materials

  • Structural Materials Engineering

Research Areas 1

  • Nanotechnology/Materials / Structural and functional materials /

Awards 22

  1. 第18回青葉工学振興会賞

    2024/12 一般社団法人青葉工学振興会 マグネシウム合金の変形組織の観察およびその組織形成過程に立脚した新機能創出

  2. 第80回 日本金属学会功績賞

    2022/03 公益社団法人日本金属学会 Mg基合金の変形・破壊メカニズムとその高機能化に関する研究

  3. 令和3年度(第24回)日本マグネシウム協会賞 奨励賞

    2021/06 一般社団法人 日本マグネシウム協会 マグネシウム合金の変形・破壊メカニズムとその高機能化に関する研究

  4. Distinguished Researchers of Tohoku University

    2021/05 Tohoku Uniersity

  5. the MEXT Young Scientists’ Prize

    2021/04 Ministry of Education, Culture, Sports, Science and Technology, MEXT

  6. Honda Memorial Young Researcher Award

    2021/02 The HONDA Memorial Foundation

  7. Light Metal Encouragement Prize

    2019/11 The Japan Institute of Light Metals

  8. Intelligent Cosmos Academic Foundation young researcher Award

    2019/05

  9. LPSO2018 Excellent Poster Award

    2018/12 The Fourth International symposium on Long-Period Stacking Ordered Structure and Mille-feuille Structure

  10. Young Researcher Award

    2017/12 Aoba Foundation for The Promotion of Engineering

  11. Murakami Young Researcher Award

    2017/09 The Japan Institute of Metals and Materials

  12. 第27回 トーキン科学技術賞最優秀賞

    2017/03/08 公益財団法人トーキン科学技術振興財団

  13. 第11回 JIM/TMS Young Leader International Scholar

    2017/03/01 The Japan Institute of Metals and Materials / The Minerals, Metals & Materials Society

  14. 第56回原田研究奨励賞

    2016/07 公益財団法人 本多記念会

  15. 第24 回日本金属学会若手講演論文賞

    2016/03 日本金属学会

  16. 第25 回日本金属学会奨励賞【力学特性】

    2015/09 日本金属学会

  17. 第23 回日本金属学会若手講演論文賞

    2015/09 日本金属学会

  18. 日本金属学会論文賞[力学特性部門]

    2009/09 日本金属学会

  19. 財団法人青葉工学振興会及川研究奨励賞

    2008/09 財団法人青葉工学振興会

  20. 日本マグネシウム協会齋藤マグネシウム学生奨学金

    2007/12 日本マグネシウム協会

  21. The 2nd Asian Symposium on Magnesium Alloys Best Poster Award受賞

    2007/10 The 2nd Asian Symposium on Magnesium Alloys

  22. 日本金属学会若手講演論文賞受賞

    2007/03 日本金属学会

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Papers 112

  1. Enhancing high-temperature strength in Al-Si alloys: The critical role of vanadium

    Jinxian Huang, Daisuke Ando, Yuji Sutou

    Materials Science and Engineering: A 2024/11

    DOI: 10.1016/j.msea.2024.147316  

  2. Ternary Mg-Sc-based TRIP alloys: Design strategy based on Sc-equivalent

    Daisuke Ando, Keisuke Yamagishi, Yuji Sutou

    Journal of Materials Research and Technology 32 2578-2583 2024/09/01

    DOI: 10.1016/j.jmrt.2024.08.123  

    ISSN: 2238-7854

    eISSN: 2214-0697

  3. Heat-resistant aluminum alloy design using explainable machine learning

    Jinxian Huang, Daisuke Ando, Yuji Sutou

    Materials and Design 243 2024/07

    DOI: 10.1016/j.matdes.2024.113057  

    ISSN: 0264-1275

    eISSN: 1873-4197

  4. B2 Ordering and Its Effect on Room Temperature Superelasticity in Mg–Sc Alloy

    Keisuke Yamagishi, Yuta Takeuchi, Yukiko Ogawa, Daisuke Ando, Yuji Sutou

    Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 54 (7) 2841-2848 2023/07

    DOI: 10.1007/s11661-023-07062-4  

    ISSN: 1073-5623

  5. Abnormal grain growth through cyclic heat treatment in a Mg–Sc alloy

    K. Yamagishi, K. Onyam, Y. Ogawa, D. Ando, Y. Sutou

    Journal of Alloys and Compounds 938 2023/03/25

    DOI: 10.1016/j.jallcom.2022.168415  

    ISSN: 0925-8388

  6. Adjustable room temperature deformation behavior of Mg–Sc alloy: From superelasticity to slip deformation via TRIP effect

    Keisuke Yamagishi, Yukiko Ogawa, Daisuke Ando, Yuji Sutou

    Journal of Alloys and Compounds 931 2023/01/10

    DOI: 10.1016/j.jallcom.2022.167507  

    ISSN: 0925-8388

  7. Development of Mg-Based Superelastic Alloy Through Aging Heat Treatment

    Keisuke Yamagishi, Yukiko Ogawa, Daisuke Ando, Yuji Sutou

    Minerals, Metals and Materials Series 181-187 2023

    DOI: 10.1007/978-3-031-22645-8_34  

    ISSN: 2367-1181

    eISSN: 2367-1696

  8. Microstructure Evolution and Local Hardness of Mg–Y–Zn Alloys Processed by ECAE Peer-reviewed

    Motohiro Yuasa, Ryoichi Sato, Takao Hoshino, Daisuke Ando, Yoshikazu Todaka, Hiroyuki Miyamoto, Hidetoshi Somekawa

    MATERIALS TRANSACTIONS 64 (4) 730-734 2023

    DOI: 10.2320/matertrans.mt-md2022018  

    ISSN: 1345-9678

    eISSN: 1347-5320

  9. Predominant factor for effectively forming kink boundaries in Mg–Y–Zn alloy through wrought-process

    Hidetoshi Somekawa, Motohiro Yuasa, Daisuke Ando, Yoshikazu Todaka

    Materials Science and Engineering A 858 2022/11/14

    DOI: 10.1016/j.msea.2022.144168  

    ISSN: 0921-5093

  10. Catalyze hydrolysis reaction for hydrogen generation by Mg/Mg<inf>2</inf>Ca nanolamellar structure in Mg–Ca alloys

    Tomoharu Uchiyama, Daisuke Ando, Yuji Sutou

    Journal of Alloys and Compounds 919 2022/10/25

    DOI: 10.1016/j.jallcom.2022.165767  

    ISSN: 0925-8388

  11. Kink bands strengthening of Mg-Y-Zn alloy via various wrought-processing

    Hidetoshi Somekawa, Yoshikazu Todaka, Daisuke Ando, Motohiro Yuasa

    Materials Letters 304 130653-130653 2021/12

    Publisher: Elsevier BV

    DOI: 10.1016/j.matlet.2021.130653  

    ISSN: 0167-577X

    eISSN: 1873-4979

  12. Intrinsic kink bands strengthening induced by several wrought-processes in Mg-Y-Zn alloys containing LPSO phase

    Hidetoshi Somekawa, Daisuke Ando, Koji Hagihara, Michiaki Yamasaki, Yoshihito Kawamura

    Materials Characterization 179 2021/09

    DOI: 10.1016/j.matchar.2021.111348  

    ISSN: 1044-5803

  13. Texture Formation through Thermomechanical Treatment and Its Effect on Superelasticity in Mg–Sc Shape Memory Alloy Peer-reviewed

    Keisuke Yamagishi, Daisuke Ando, Yuji Sutou, Yukiko Ogawa

    MATERIALS TRANSACTIONS 61 (12) 2270-2275 2020/12/01

    Publisher: Japan Institute of Metals

    DOI: 10.2320/matertrans.mt-m2020244  

    ISSN: 1347-5320

    More details Close

    Mg-Sc合金における様々な加工熱処理によるβ相集合組織の形成について調査し、室温での超弾性特性に及ぼす集合組織の影響を調べた。β相の変態集合組織はRDやTDへ特定の結晶配向は示さなかったが、初期組織をβ単相として冷間圧延を行った場合には、微弱な{111}<011>再結晶集合組織を形成した。その一方で、各方向での超弾性ひずみに大きな差はみられなかった。

  14. Texture formation through thermomechanical treatment and its effect on superelasticity in MgSc

    Shape Memory Alloy, Keisuke Yamagishi, Daisuke Ando, Yuji Sutou, Yukiko Ogawa

    Materials Transactions 61 (12) 2270-2275 2020/10/30

    DOI: 10.2320/matertrans.MT-M2020244  

    ISSN: 1345-9678

  15. Microstructure and mechanical properties of low-temperature wrought-processed Mg–Y–Zn alloy containing LPSO phase

    Hidetoshi Somekawa, Daisuke Ando, Michiaki Yamasaki, Yoshihito Kawamura

    Materialia 12 2020/08

    DOI: 10.1016/j.mtla.2020.100786  

    eISSN: 2589-1529

  16. Texture formation through thermomechanical treatment and its effect on superelasticity in Mg-Sc shape memory alloy

    Keisuke Yamagishi, Daisuke Ando, Yuji Sutou, Yukiko Ogawa

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 84 (8) 253-259 2020/08/01

    Publisher: The Japan Institute of Metals and Materials

    DOI: 10.2320/jinstmet.J2020010  

    ISSN: 0021-4876

    eISSN: 1880-6880 2433-7501

  17. Microstructure and mechanical properties of caliber rolled Mg–Y–Zn alloys

    Hidetoshi Somekawa, Daisuke Ando

    Materials Science and Engineering A 780 2020/04

    DOI: 10.1016/j.msea.2020.139144  

    ISSN: 0921-5093

  18. Ordering of the bcc Phase in a Mg-Sc Binary Alloy by Aging Treatment Peer-reviewed

    Yukiko Ogawa, Yuji Sutou, Daisuke Ando, Junichi Koike, Hidetoshi Somekawa

    Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 50 (7) 3044-3047 2019/07/15

    DOI: 10.1007/s11661-019-05260-7  

    ISSN: 1073-5623

  19. Room temperature superelasticity in a lightweight shape memory Mg alloy Peer-reviewed

    K. Yamagishi, Y. Ogawa, D. Ando, Y. Sutou, J. Koike

    Scripta Materialia 168 114-118 2019/07/15

    DOI: 10.1016/j.scriptamat.2019.04.023  

    ISSN: 1359-6462

  20. Aging precipitation kinetics of Mg-Sc alloy with bcc+hcp two-phase

    Yukiko Ogawa, Yuji Sutou, Daisuke Ando, Junichi Koike

    Journal of Alloys and Compounds 747 854-860 2018/05/30

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.jallcom.2018.03.064  

    ISSN: 0925-8388

  21. Martensitic Transformation in a β-Type Mg–Sc Alloy Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Hidetoshi Somekawa, Junichi Koike

    Shape Memory and Superelasticity 4 (1) 167-173 2018/03/01

    DOI: 10.1007/s40830-017-0143-y  

    ISSN: 2199-384X

    eISSN: 2199-3858

  22. A lightweight shape-memory magnesium alloy Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Science 353 (6297) 368-370 2016/07/22

    DOI: 10.1126/science.aaf6524  

    ISSN: 0036-8075

    eISSN: 1095-9203

  23. Internal microstructure observation of enhanced grain-boundary sliding at room temperature in AZ31 magnesium alloy Peer-reviewed

    D. Ando, Y. Sutou, J. Koike

    Materials Science and Engineering A 666 94-99 2016/06/01

    DOI: 10.1016/j.msea.2016.04.030  

    ISSN: 0921-5093

    eISSN: 1873-4936

  24. Age-hardening effect by phase transformation of high Sc containing Mg alloy Peer-reviewed

    D. Ando, Y. Ogawa, T. Suzuki, Y. Sutou, J. Koike

    Materials Letters 161 5-8 2015/08/25

    DOI: 10.1016/j.matlet.2015.06.057  

    ISSN: 0167-577X

    eISSN: 1873-4979

  25. The role of deformation twinning in the fracture behavior and mechanism of basal textured magnesium alloys Peer-reviewed

    D. Ando, J. Koike, Y. Sutou

    Materials Science and Engineering A 600 145-152 2014/04/10

    DOI: 10.1016/j.msea.2014.02.010  

    ISSN: 0921-5093

  26. The role of deformation twinning in the fracture behavior and mechanism of basal textured magnesium alloys Peer-reviewed

    D. Ando, J. Koike, Y. Sutou

    Materials Science and Engineering A 600 (10) 145-152 2014/04

    DOI: 10.1016/j.msea.2014.02.010  

    ISSN: 0921-5093

    eISSN: 1873-4936

  27. Roles of deformation twinning and dislocation slip in the fatigue failure mechanism of AZ31 Mg alloys Peer-reviewed

    J. Koike, N. Fujiyama, D. Ando, Y. Sutou

    Scripta Materialia 63 (7) 747-750 2010/10

    DOI: 10.1016/j.scriptamat.2010.03.021  

    ISSN: 1359-6462

  28. Relationship between deformation twinning and surface step formation in AZ31 magnesium alloys Peer-reviewed

    D. Ando, J. Koike, Y. Sutou

    Acta Materialia 58 (13) 4316-4324 2010/08

    DOI: 10.1016/j.actamat.2010.03.044  

    ISSN: 1359-6454

  29. Room temperature ferromagnetism in polymorphic (Cr,Mn)Te films

    Mihyeon Kim, Ryoga Nakajima, Takashi Harumoto, Yi Shuang, Daisuke Ando, Nobuki Tezuka, Yuta Saito, Yuji Sutou

    APL Materials 2025/06/01

    DOI: 10.1063/5.0266675  

  30. Melting‐Free Crystalline Polymorphic Transition in CrTe Thin Films: Potential for Phase‐Change Random Access Memory Applications

    Takuya Tsuruta, Yi Shuang, Daisuke Ando, Yuji Sutou

    physica status solidi (RRL) – Rapid Research Letters 2025/04/03

    Publisher: Wiley

    DOI: 10.1002/pssr.202500018  

    ISSN: 1862-6254

    eISSN: 1862-6270

    More details Close

    The phase‐change potential of an as‐deposited chromium telluride (CrTe) thin film is investigated by focusing on its crystalline‐to‐crystalline polymorphic transition. Transmission electron microscopy determined that the as‐deposited CrTe thin film exhibits a hexagonal crystal structure that changes to a monoclinic crystal structure upon annealing at 500 °C. This alteration of the crystal structure is accompanied by a large change in carrier concentration of around two magnitudes and a very small corresponding change in resistivity. The memory switching of a fabricated phase‐change memory device utilizing a CrTe thin film active layer demonstrates a pronounced resistance disparity between SET and RESET states compared to the resistance change upon phase change in the thin‐film case. This disparity is attributed to variations in the contact resistivity of the memory device, which are driven by changes in the carrier concentration upon the crystalline polymorphic transition. Electrical pulse measurements confirm that the resistance change is reversible and repeatable, highlighting the material's potential for phase‐change random access memory applications.

  31. Phase Engineering of a 1D van der Waals Thin Film

    Yi Shuang, Daisuke Ando, Yuji Sutou

    Advanced Functional Materials 2025/03/20

    DOI: 10.1002/adfm.202503094  

  32. Amorphous-to-crystalline transition-induced two-step thin film growth of quasi-one-dimensional penta-telluride ZrTe<inf>5</inf>

    Yi Shuang, Yuta Saito, Shogo Hatayama, Paul Fons, Ando Daisuke, Yuji Sutou

    Journal of Materials Science and Technology 210 246-253 2025/03/01

    DOI: 10.1016/j.jmst.2024.05.039  

    ISSN: 1005-0302

  33. Direct observation of phase-change volume in contact resistance change memory using N-doped Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> phase-change material

    Yi Shuang, Daisuke Ando, Yunheub Song, Yuji Sutou

    Applied Physics Letters 124 (6) 2024/02/05

    DOI: 10.1063/5.0190632  

    ISSN: 0003-6951

  34. An amorphous Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf>/polyimide double-layer foil with an extraordinarily outstanding strain sensing ability

    Yinli Wang, Yi Shuang, Mihyeon Kim, Daisuke Ando, Fumio Narita, Yuji Sutou

    Materials Horizons 2024

    DOI: 10.1039/d4mh00616j  

    ISSN: 2051-6347

    eISSN: 2051-6355

  35. Conduction Mechanism in Amorphous NbTe&lt;sub&gt;4&lt;/sub&gt; Thin Film

    Yi Shuang, Daisuke Ando, Yuji Sutou

    MATERIALS TRANSACTIONS 65 (9) 1061-1066 2024

    Publisher: Japan Institute of Metals

    DOI: 10.2320/matertrans.mt-m2024062  

    ISSN: 1345-9678

    eISSN: 1347-5320

  36. NbTe<inf>4</inf> Phase-Change Material: Breaking the Phase-Change Temperature Balance in 2D Van der Waals Transition-Metal Binary Chalcogenide

    Yi Shuang, Qian Chen, Mihyeon Kim, Yinli Wang, Yuta Saito, Shogo Hatayama, Paul Fons, Daisuke Ando, Momoji Kubo, Yuji Sutou

    Advanced Materials 35 (39) 2023/09/27

    DOI: 10.1002/adma.202303646  

    ISSN: 0935-9648

    eISSN: 1521-4095

  37. Evaluation of cholesterol crystals in carotid plaque by dual energy computed tomography

    Takuya Saito, Hidenori Endo, Daisuke Ando, Itsuki Miyagi, Yuichi Kawabata, Mika Watanabe, Atsushi Saito, Miki Fujimura, Yukako Yazawa

    Neuroradiology 65 (5) 979-982 2023/05

    DOI: 10.1007/s00234-023-03138-5  

    ISSN: 0028-3940

    eISSN: 1432-1920

  38. Soret-effect induced phase-change in chromium nitride semiconductor film

    Yi Shuang, Shunsuke Mori, Takuya Yamamoto, Shogo Hatayama, Yun-Heub Song, JinPyo Hong, Daisuke Ando, Yuji Sutou

    ACS Nano 18 (32) 21135-21143 2023/02/01

    Publisher: Research Square Platform LLC

    DOI: 10.21203/rs.3.rs-2486043/v1  

    ISSN: 1936-0851

    eISSN: 1936-086X

  39. Low-Temperature Oxidation-Sintering Behaviors of Cu Fine Particles

    Nobuaki Takeuchi, Daisuke Ando, Koike Junichi, Yuji Sutou

    Materials Transactions 64 (4) 931-938 2023

    DOI: 10.2320/matertrans.MT-M2022219  

    ISSN: 1345-9678

  40. Effect of N dopants on the phase change characteristics of Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> film revealed by changes in optical properties

    Yi Shuang, Shogo Hatayama, Daisuke Ando, Yuji Sutou

    Applied Surface Science 601 2022/11/01

    DOI: 10.1016/j.apsusc.2022.154189  

    ISSN: 0169-4332

  41. Thermal stress control of the polymorphic transformation in MnTe semiconductor films

    Shunsuke Mori, Yinli Wang, Daisuke Ando, Fumio Narita, Yuji Sutou

    Materialia 24 101493-101493 2022/08

    Publisher: Elsevier BV

    DOI: 10.1016/j.mtla.2022.101493  

    ISSN: 2589-1529

    eISSN: 2589-1529

  42. Application of deep neural network learning in composites design Invited Peer-reviewed

    Yinli Wang, Constantinos Soutis, Daisuke Ando, Yuji Sutou, Fumio Narita

    European Journal of Materials 2 (1) 118-171 2022/04/08

    Publisher: Informa UK Limited

    DOI: 10.1080/26889277.2022.2053302  

    eISSN: 2688-9277

  43. Electrical Conduction Mechanism of β-MnTe Thin Film with Wurtzite-Type Structure Using Radiofrequency Magnetron Sputtering

    Mihyeon Kim, Shunsuke Mori, Yi Shuang, Shogo Hatayama, Daisuke Ando, Yuji Sutou

    Physica Status Solidi - Rapid Research Letters 16 (9) 2022

    DOI: 10.1002/pssr.202100641  

    ISSN: 1862-6254

    eISSN: 1862-6270

  44. Evolution of the local structure surrounding nitrogen atoms upon the amorphous to crystalline phase transition in nitrogen-doped Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> phase-change material

    Yi Shuang, Shogo Hatayama, Yuta Saito, Paul Fons, Alexander V. Kolobov, Daisuke Ando, Yuji Sutou

    Applied Surface Science 556 2021/08/01

    DOI: 10.1016/j.apsusc.2021.149760  

    ISSN: 0169-4332

  45. Thermal stability and polymorphic transformation kinetics in β-MnTe films deposited via radiofrequency magnetron sputtering

    Shunsuke Mori, Shogo Hatayama, Daisuke Ando, Yuji Sutou

    Japanese Journal of Applied Physics 60 (4) 045504-045504 2021/04

    Publisher: {IOP} Publishing

    DOI: 10.35848/1347-4065/abee03  

    ISSN: 0021-4922

    eISSN: 1347-4065

  46. High Contact Resistivity Enabling Low-Energy Operation in Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf>-Based Phase-Change Random Access Memory

    Shogo Hatayama, Yasunori Abe, Daisuke Ando, Yuji Sutou

    Physica Status Solidi - Rapid Research Letters 15 (3) 2021/03

    DOI: 10.1002/pssr.202000392  

    ISSN: 1862-6254

    eISSN: 1862-6270

  47. Temperature-Dependent Electronic Transport in Non-Bulk-Resistance-Variation Nitrogen-Doped Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> Phase-Change Material

    Yi Shuang, Shogo Hatayama, Daisuke Ando, Yuji Sutou

    Physica Status Solidi - Rapid Research Letters 15 (3) 2021/03

    DOI: 10.1002/pssr.202000415  

    ISSN: 1862-6254

    eISSN: 1862-6270

  48. Potential of low-resistivity Cu<inf>2</inf>Mg for highly scaled interconnects and its challenges

    Linghan Chen, Qian Chen, Daisuke Ando, Yuji Sutou, Momoji Kubo, Junichi Koike

    Applied Surface Science 537 2021/01/30

    DOI: 10.1016/j.apsusc.2020.148035  

    ISSN: 0169-4332

  49. Interdiffusion reliability and resistivity scaling of intermetallic compounds as advanced interconnect materials

    Linghan Chen, Sushant Kumar, Masataka Yahagi, Daisuke Ando, Yuji Sutou, Daniel Gall, Ravishankar Sundararaman, Junichi Koike

    Journal of Applied Physics 129 (3) 2021/01/21

    DOI: 10.1063/5.0026837  

    ISSN: 0021-8979

    eISSN: 1089-7550

  50. Reversible displacive transformation in MnTe polymorphic semiconductor

    Shunsuke Mori, Shogo Hatayama, Yi Shuang, Daisuke Ando, Yuji Sutou

    Nature Communications 11 (1) 2020/12/01

    DOI: 10.1038/s41467-019-13747-5  

    eISSN: 2041-1723

  51. Sequential two-stage displacive transformation from β to α via β′ phase in polymorphic MnTe film

    Shunsuke Mori, Daisuke Ando, Yuji Sutou

    Materials and Design 196 2020/11

    DOI: 10.1016/j.matdes.2020.109141  

    ISSN: 0264-1275

    eISSN: 1873-4197

  52. Possibility of Cu2Mg for Liner-Barrier Free Interconnects

    Linghan Chen, Daisuke Ando, Yuji Sutou, Masataka Yahagi, Junichi Koike

    2020 IEEE International Interconnect Technology Conference (IITC) 2020/10/05

    Publisher: IEEE

    DOI: 10.1109/iitc47697.2020.9515588  

  53. Nitrogen doping-induced local structure change in a Cr2Ge2Te6 inverse resistance phase-change material

    Yi Shuang, Shogo Hatayama, Hiroshi Tanimura, Daisuke Ando, Tetsu Ichitsubo, Yuji Sutou

    MATERIALS ADVANCES 1 (7) 2426-2432 2020/10

    DOI: 10.1039/d0ma00554a  

    eISSN: 2633-5409

  54. Liner- and barrier-free NiAl metallization: A perspective from TDDB reliability and interface status Peer-reviewed

    Linghan Chen, Daisuke Ando, Yuji Sutou, Shinji Yokogawa, Junichi Koike

    Applied Surface Science 497 143810 2019/12/15

    DOI: 10.1016/j.apsusc.2019.143810  

    ISSN: 0169-4332

  55. Bidirectional Selector Utilizing Hybrid Diodes for PCRAM Applications

    Yi Shuang, Shogo Hatayama, Junseop An, Jinpyo Hong, Daisuke Ando, Yunheub Song, Yuji Sutou

    Scientific Reports 9 (1) 2019/12/01

    DOI: 10.1038/s41598-019-56768-2  

    eISSN: 2045-2322

  56. Cr-Triggered Local Structural Change in Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> Phase Change Material Peer-reviewed

    Shogo Hatayama, Yi Shuang, Paul Fons, Yuta Saito, Alexander V. Kolobov, Keisuke Kobayashi, Satoshi Shindo, Daisuke Ando, Yuji Sutou

    ACS Applied Materials and Interfaces 11 (46) 43320-43329 2019/11/20

    DOI: 10.1021/acsami.9b11535  

    ISSN: 1944-8244

    eISSN: 1944-8252

  57. Zn-Fe めっき層の組成および組織制御による改質に向けたスパッタリング成膜による検証 Peer-reviewed

    Uchiyama, A, Kawasaki, K, Sutou, Y, Ando, D, Koike, J

    鉄と鋼 105 (7) 724-732 2019/07

    ISSN: 2433-3093

  58. Relation between density and optical contrasts upon crystallization in Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> phase-change material: Coexistence of a positive optical contrast and a negative density contrast Peer-reviewed

    Shogo Hatayama, Daisuke Ando, Yuji Sutou

    Journal of Physics D: Applied Physics 52 (32) 325111 2019/06/13

    DOI: 10.1088/1361-6463/ab233f  

    ISSN: 0022-3727

    eISSN: 1361-6463

  59. CuAl<inf>2</inf> thin films as a low-resistivity interconnect material for advanced semiconductor devices Peer-reviewed

    Linghan Chen, Daisuke Ando, Yuji Sutou, Junichi Koike

    Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics 37 (3) 031215 2019/05/01

    DOI: 10.1116/1.5094404  

    ISSN: 2166-2746

    eISSN: 2166-2754

  60. Electrical transport mechanism of the amorphous phase in Cr <inf>2</inf> Ge <inf>2</inf> Te <inf>6</inf> phase change material Peer-reviewed

    Shogo Hatayama, Yuji Sutou, Daisuke Ando, Junichi Koike, Keisuke Kobayashi

    Journal of Physics D: Applied Physics 52 (10) 105103 2019/01/09

    DOI: 10.1088/1361-6463/aafa94  

    ISSN: 0022-3727

    eISSN: 1361-6463

  61. Improvement of powdering resistance of Zn-Fe galvannealed coating by controlling of its composition and microstructure: Verification with sputtering method

    Aimi Uchiyama, Kohei Kawasaki, Yuji Sutou, Daisuke Ando, Junichi Koike

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan 105 (7) 724-732 2019

    Publisher: The Iron and Steel Institute of Japan

    DOI: 10.2355/tetsutohagane.TETSU-2018-164  

    ISSN: 0021-1575

    eISSN: 1883-2954

  62. NiAl as a potential material for liner- and barrier-free interconnect in ultrasmall technology node

    Linghan Chen, Daisuke Ando, Yuji Sutou, Daniel Gall, Junichi Koike

    Applied Physics Letters 113 (18) 2018/10/29

    DOI: 10.1063/1.5049620  

    ISSN: 0003-6951

  63. Crystallization mechanism and kinetics of Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> phase change material

    S. Hatayama, Y. Sutou, D. Ando, J. Koike

    MRS Communications 8 (3) 1167-1172 2018/09/01

    DOI: 10.1557/mrc.2018.176  

    ISSN: 2159-6859

    eISSN: 2159-6867

  64. New Contact Metallization Scheme for FinFET and beyond

    Junichi Koike, Maryamsadat Hosseini, Daisuke Ando, Yuji Sutou

    2018 IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2018 - Proceedings 169-171 2018/07/26

    DOI: 10.1109/EDTM.2018.8421448  

  65. Understanding the fast phase-change mechanism of tetrahedrally bonded Cu2GeTe3: Comprehensive analyses of electronic structure and transport phenomena

    Keisuke Kobayashi, Jonathan M. Skelton, Yuta Saito, Satoshi Shindo, Masaaki Kobata, Paul Fons, Alexander V. Kolobov, Stephen Elliott, Daisuke Ando, Yuji Sutou

    Physical Review B 97 (19) 2018/05/03

    DOI: 10.1103/PhysRevB.97.195105  

    ISSN: 2469-9950

    eISSN: 2469-9969

  66. Co and CoTi<inf>x</inf> for contact plug and barrier layer in integrated circuits

    Maryamsadat Hosseini, Daisuke Ando, Yuji Sutou, Junichi Koike

    Microelectronic Engineering 189 78-84 2018/04

    Publisher: Elsevier B.V.

    DOI: 10.1016/j.mee.2017.12.017  

    ISSN: 0167-9317

  67. Contact resistance change memory using N-doped Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf> phase-change material showing non-bulk resistance change

    Y. Shuang, Y. Sutou, S. Hatayama, S. Shindo, Y. H. Song, D. Ando, J. Koike

    Applied Physics Letters 112 (18) 2018/04

    Publisher: American Institute of Physics Inc.

    DOI: 10.1063/1.5029327  

    ISSN: 0003-6951

  68. Inverse Resistance Change Cr<inf>2</inf>Ge<inf>2</inf>Te<inf>6</inf>-Based PCRAM Enabling Ultralow-Energy Amorphization

    Shogo Hatayama, Yuji Sutou, Satoshi Shindo, Yuta Saito, Yun Heub Song, Daisuke Ando, Junichi Koike

    ACS Applied Materials and Interfaces 10 (3) 2725-2734 2018/01/24

    DOI: 10.1021/acsami.7b16755  

    ISSN: 1944-8244

    eISSN: 1944-8252

  69. Material innovation for MOL, BEOL, and 3D integration

    J. Koike, M. Hosseini, H. T. Hai, D. Ando, Y. Sutou

    Technical Digest - International Electron Devices Meeting, IEDM 32.3.1-32.3.4 2018/01/23

    Publisher: Institute of Electrical and Electronics Engineers Inc.

    DOI: 10.1109/IEDM.2017.8268485  

    ISSN: 0163-1918

  70. Optical and electrical properties of ¡-MnTe thin films deposited using RF magnetron sputtering

    Shunsuke Mori, Yuji Sutou, Daisuke Ando, Junichi Koike

    Materials Transactions 59 (9) 1506-1512 2018

    DOI: 10.2320/matertrans.M2018086  

    ISSN: 1345-9678

  71. Feasibility study of Cu paste printing technique to fill deep via holes for low cost 3D TSV applications

    Hoang Tri Hai, Kang Wook Lee, Daisuke Ando, Yuji Sutou, Mitsumasa Koyanagi, Junichi Koike

    IITC 2017 - 2017 IEEE International Interconnect Technology Conference 2017/07/05

    Publisher: Institute of Electrical and Electronics Engineers Inc.

    DOI: 10.1109/IITC-AMC.2017.7968976  

  72. Enhanced fatigue properties of cast AZ80 Mg alloy processed by cyclic torsion and low-temperature annealing

    Qinghuan Huo, Zhenyu Xiao, Xuyue Yang, Daisuke Ando, Yuji Sutou, Junichi Koike

    Materials Science and Engineering A 696 52-59 2017/06/01

    DOI: 10.1016/j.msea.2017.04.061  

    ISSN: 0921-5093

    eISSN: 1873-4936

  73. Texture randomization of hexagonal close packed phase through hexagonal close packed/body centered cubic phase transformation in Mg-Sc alloy

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Scripta Materialia 128 27-31 2017/02/01

    DOI: 10.1016/j.scriptamat.2016.09.024  

    ISSN: 1359-6462

  74. Effect of Cu content on hardness and wear properties in (Cr, Mo, Cu)N film

    Yuta Suzuki, Yuji Sutou, Daisuke Ando, Junichi Koike

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 81 (5) 270-275 2017

    DOI: 10.2320/jinstmet.JBW201613  

    ISSN: 0021-4876

    eISSN: 1880-6880

  75. Effect of initial microstructure on stress-strain behavior in Mg-Sc-Zn based alloy with high Sc content

    Yuta Takeuchi, Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 81 (5) 276-281 2017

    DOI: 10.2320/jinstmet.JBW201612  

    ISSN: 0021-4876

    eISSN: 1880-6880

  76. Stress-strain hysteresis and strain hardening during cyclic tensile test of Mg-0.6at%Y alloy

    Qinghuan Huo, Daisuke Ando, Yuji Sutou, Junichi Koike

    Materials Science and Engineering A 678 235-242 2016/12/15

    DOI: 10.1016/j.msea.2016.10.008  

    ISSN: 0921-5093

    eISSN: 1873-4936

  77. Erratum to “Determination of ɑ/β phase boundaries and mechanical characterization of Mg-Sc binary alloys” [Mater. Sci. Eng. A 670 (2016) 335–341]

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Kyosuke Yoshimi, Junichi Koike

    Materials Science and Engineering A 674 713 2016/09/30

    Publisher: Elsevier Ltd

    DOI: 10.1016/j.msea.2016.08.016  

    ISSN: 0921-5093

  78. Determination of α/β phase boundaries and mechanical characterization of Mg-Sc binary alloys Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Kyosuke Yoshimi, Junichi Koike

    Materials Science and Engineering A 670 335-341 2016/07/18

    DOI: 10.1016/j.msea.2016.06.028  

    ISSN: 0921-5093

    eISSN: 1873-4936

  79. Crystal orientation changing behavior during erichsen test in Mg-Y dilute alloy Peer-reviewed

    Tetsu Suzuki, Daisuke Ando, Hidetoshi Somekawa, Yuji Sutou, Junichi Koike

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 80 (8) 515-520 2016

    DOI: 10.2320/jinstmet.J2016018  

    ISSN: 0021-4876

    eISSN: 1880-6880

  80. Hardness and wear properties of Ti-Mo-C-N film Peer-reviewed

    Toshiaki Toyoda, Yuji Sutou, Shoko Komiyama, Daisuke Ando, Junichi Koike, Mei Wang

    Materials Transactions 57 (3) 362-367 2016

    DOI: 10.2320/matertrans.M2015383  

    ISSN: 1345-9678

    eISSN: 1347-5320

  81. Aging effect of Mg-Sc alloy with α+β two-phase microstructure Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Materials Transactions 57 (7) 1119-1123 2016

    DOI: 10.2320/matertrans.M2016093  

    ISSN: 1345-9678

    eISSN: 1347-5320

  82. Age-hardening of dual phase Mg-Sc alloy at 573 K Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Magnesium Technology 2016-January 147-149 2016

    DOI: 10.1002/9781119274803.ch29  

    ISSN: 1545-4150

  83. Study on fatigue mechanism of Mg-0.6at%Y alloy by cyclic tensile test Peer-reviewed

    Qinghuan Huo, Daisuke Ando, Junichi Koike, Yuji Sutou

    Magnesium Technology 2016-January 299-303 2016

    DOI: 10.1002/9781119274803.ch58  

    ISSN: 1545-4150

  84. Aging effect of Mg-Sc alloy with α+β two-phase microstructure Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 80 (3) 171-175 2016

    DOI: 10.2320/jinstmet.JBW201511  

    ISSN: 0021-4876

    eISSN: 1880-6880

  85. Microstructure, hardness and wear resistance of reactive sputtered Mo-O-N films on stainless steel substrate Peer-reviewed

    Y. Sutou, S. Komiyama, M. Sonobe, D. Ando, J. Koike, M. Wang

    Surface and Coatings Technology 280 1-7 2015/10/25

    DOI: 10.1016/j.surfcoat.2015.08.047  

    ISSN: 0257-8972

  86. Crystallization processes of Sb<inf>100-x</inf>Zn<inf>x</inf> (0 ≤ x ≤ 70) amorphous films for use as phase change memory materials Peer-reviewed

    Yuta Saito, Masashi Sumiya, Yuji Sutou, Daisuke Ando, Junichi Koike

    AIP Advances 5 (9) 097151 2015/09/01

    DOI: 10.1063/1.4931392  

    ISSN: 2158-3226

    eISSN: 2158-3226

  87. Mg-Y合金圧延材の再結晶過程と集合組織変化 Peer-reviewed

    鈴木哲, 安藤大輔, 須藤祐司, 小池淳一

    軽金属 67 (7) 259-262 2015/07

    Publisher: The Japan Institute of Light Metals

    DOI: 10.2464/jilm.65.259  

    ISSN: 0451-5994

    eISSN: 1880-8018

    More details Close

    This paper reports the texture weakening associated with the characteristic recrystallization processes of cold-rolled and hot-rolled Mg–Y alloy during annealing at 400°C. After rolling, severely strained regions were formed along grain boundaries for the cold-rolled samples and across neighboring grains for the hot-rolled samples. In the severely strained regions, the cold-rolled sample showed the presence of the ⟨c+a⟩ dislocations, while the hot-rolled sample showed the formation of multiple twins. The results suggested that the texture weakening after annealing was due to the formation of nucleation site for recrystallization near boundaries by the high activity of the ⟨c+a⟩ dislocations in the cold-rolled sample. Meanwhile, in the hot-rolled sample, it was due to the formation of multiple twins which acted as the nuclei of recrystallized grains.

  88. Hardness and wear properties of Ti-Mo-C-N film Peer-reviewed

    Toshiaki Toyoda, Yuji Sutou, Shoko Komiyama, Daisuke Ando, Junichi Koike, Mei Wang

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 79 (4) 220-226 2015/04

    DOI: 10.2320/jinstmet.JBW201401  

    ISSN: 0021-4876

    eISSN: 1880-6880

  89. Precipitation hardening in Ti-Mo-N coating deposited by reactive sputtering Peer-reviewed

    Yuji Sutou, Shoko Komiyama, Katsunari Oikawa, Daisuke Ando, Junichi Koike

    PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 417-418 2015

  90. Recrystallization process and texture change of Mg-Y alloy rolled sheet Peer-reviewed

    Tetsu Suzuki, Daisuke Ando, Yuji Sutou, Junichi Koike

    Keikinzoku/Journal of Japan Institute of Light Metals 65 (7) 259-262 2015

    Publisher: Japan Institute of Light Metals

    DOI: 10.2464/jilm.65.259  

    ISSN: 0451-5994

    eISSN: 1880-8018

  91. Significant age hardening response of BCC/HCP dual phase Mg-Sc alloys Peer-reviewed

    Daisuke Ando, Yukiko Ogawa, Yuji Sutou, Junichi Koike

    PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 1207-1208 2015

  92. Determination of HCP/BCC boundaries and mechanical properties of dual phase alloy in binary Mg-Sc system Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 419-420 2015

  93. Resistive Switching Behavior in Undoped α-Fe2O3 Film with a Low Resistivity

    Yukiko Ogawa, Yuji Sutou, Daisuke Ando, Junichi Koike

    Advances in Science and Technology 95 96-99 2014/10

    Publisher: Trans Tech Publications, Ltd.

    DOI: 10.4028/www.scientific.net/ast.95.96  

    ISSN: 1662-0356

    More details Close

    <jats:p>The resistive switching behavior of a low resistive p-type α-Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> thin film sandwiched between Fe bottom electrode and top electrodes of various materials (Fe, Ni and TiN) was studied by current-voltage measurements. When TiN was used for top electrode of memory cell, the reversible resistive switching behavior was observed for over 100 cycles. From impedance measurement, it was suggested that the resistive switching behavior in the TiN/p-type α-Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>/Fe device is attributed to the change of the contact resistance in the interface between TiN and α-Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> layers.</jats:p>

  94. Formation behavior and adhesion property of metallic Mn layer on porous SiOC by chemical vapor deposition Peer-reviewed

    Yoshiyuki Tsuchiya, Daisuke Ando, Yuji Sutou, Junichi Koike

    Japanese Journal of Applied Physics 53 (5 SPEC. ISSUE 2) 05GA10 2014/05

    DOI: 10.7567/JJAP.53.05GA10  

    ISSN: 0021-4922

    eISSN: 1347-4065

  95. Formation behavior and adhesion property of metallic Mn layer on porous SiOC by chemical vapor deposition Peer-reviewed

    Yoshiyuki Tsuchiya, Daisuke Ando, Yuji Sutou, Junichi Koike

    JAPANESE JOURNAL OF APPLIED PHYSICS 53 (5) 05GA10 2014/05

    DOI: 10.7567/JJAP.53.05GA10  

    ISSN: 0021-4922

    eISSN: 1347-4065

  96. Reflow behavior of Cu-Mn in LSI line patterns Peer-reviewed

    Tomohiro Saito, Daisuke Ando, Yuji Sutou, Junichi Koike

    Japanese Journal of Applied Physics 53 (5 SPEC. ISSUE 2) 05GA09 2014/05

    DOI: 10.7567/JJAP.53.05GA09  

    ISSN: 0021-4922

    eISSN: 1347-4065

  97. Effects of O<inf>2</inf> and N<inf>2</inf> flow rate on the electrical properties of Fe-O-N thin films Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Materials Transactions 55 (10) 1606-1610 2014

    DOI: 10.2320/matertrans.M2014089  

    ISSN: 1345-9678

    eISSN: 1347-5320

  98. New model for low-temperature oxidation of copper single crystal Peer-reviewed

    Kensuke Fujita, Daisuke Ando, Masahito Uchikoshi, Kouji Mimura, Minoru Isshiki

    Applied Surface Science 276 347-358 2013/07/01

    DOI: 10.1016/j.apsusc.2013.03.096  

    ISSN: 0169-4332

  99. The electrical and optical properties of feon thin films deposited by RF magnetron sputtering Peer-reviewed

    Yukiko Ogawa, Daisuke Ando, Yuji Sutou, Junichi Koike

    Materials Transactions 54 (10) 2055-2058 2013

    DOI: 10.2320/matertrans.M2013170  

    ISSN: 1345-9678

    eISSN: 1347-5320

  100. Deformation and strength characterization of Mg alloys with rolled crystallographic textures by crystal plasticity finite element method Peer-reviewed

    Tomohiro Ishida, Shinpei Shibutani, Junji Kato, Kenjiro Terada, Takashi Kyoya, Daisuke Ando, Junichi Koike

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 79 (808) 1840-1851 2013

    Publisher: Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaia.79.1840  

    ISSN: 0387-5008

    eISSN: 1884-8338

  101. Deformation and strength characterization of Mg alloys with rolled crystallographic textures by crystal plasticity finite element method Peer-reviewed

    Tomohiro Ishida, Shinpei Shibutani, Junji Kato, Kenjiro Terada, Takashi Kyoya, Daisuke Ando, Junichi Koike

    Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 79 (808) 1840-1851 2013

    Publisher: Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaia.79.1840  

    ISSN: 0387-5008

  102. A new constitutive model for crystal plasticity with deformation twinning Peer-reviewed

    T. Ishida, S. Shibutani, J. Kato, K. Terada, T. Kyoya, D. Ando, J. Koike

    Transactions of JSCES 2012 20120014-20120014 2012/09

    Publisher: JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE

    DOI: 10.11421/jsces.2012.20120014  

    ISSN: 1347-8826

    eISSN: 1347-8826

    More details Close

    A thermodynamics-based constitutive model, which accounts for both crystallographic slip and deformation twinning, is developed for a single crystal of hcp metals within the framework of finite crystal plasticity. While the volume fractions of stress-free twin deformations are introduced as internal variables, the free-energy involves the bulk energy of separate phases and the surface energy at twin interfaces, which are introduced as functions of the internal variables, in addition to the standard hardening-related energy in crystal plasticity framework. After the formulation is described in detail, a series of numerical examples is presented to verify the performance of the proposed model in predicting the deformation twinning, the successive deformation process and the twinning-induced stress responses. The results are studied with reference to the theoretical consequences and the experimental results reported in the literature.

  103. 六方晶金属の結晶塑性・変形双晶構成モデル Peer-reviewed

    石田 智広, 渋谷 慎兵, 加藤 準治, 寺田 賢二郎, 京谷 孝史, 安藤 大輔, 小池 淳一

    計算工学会論文集 2012 P20120014 2012

  104. The thickness-ratio effects of Ni/Nb electrode on wire bonding strength with n-type 4H-SiC Peer-reviewed

    Kunhwa Jung, Daisuke Ando, Yuji Sutou, Tetsuya Oyamada, Masamoto Tanaka, Junichi Koike

    Materials Science Forum 717-720 829-832 2012

    DOI: 10.4028/www.scientific.net/MSF.717-720.829  

    ISSN: 0255-5476

    eISSN: 1662-9752

  105. A new constitutive model for crystal plasticity with deformation twinning

    Tomohiro Ishida, Shinpei Shibutani, Junji Kato, Kenjiro Terada, Takashi Kyoya, Daisuke Ando, Junichi Koike

    Transactions of the Japan Society for Computational Engineering and Science 2012 2 2012

    eISSN: 1347-8826

  106. The Relationship between Grain boundary sliding and Grain Orientation in AZ31 Magnesium Alloys at Room Temperature Peer-reviewed

    D. Ando, Y. Sutou, J. Koike

    TMS Magnesium Technology 2010 245-247 2010/03

  107. The relationships between grain boundary sliding and anisotropic dislocation plasticity in AZ31 magnesium alloys at room temperature Peer-reviewed

    D. Ando, Y. Sutou, J. Koike

    Magnesium Technology 245-247 2010

    ISSN: 1545-4150

  108. MICROSTRUCTURAL INVESTIGATION OF TWINS UNDER THE FRACTURE SURFACE IN AZ31 MAGNESIUM ALLOYS Peer-reviewed

    D. Ando, J. Koike

    MAGNESIUM TECHNOLOGY 2009 537-540 2009

    ISSN: 1545-4150

  109. The Role of Deformation Twin during Fracture Behavior in AZ31 Peer-reviewed

    D. Ando, J. Koike

    Magnesium, 8th International Conference on Magnesium Alloys their Applications 8 8 538-543 2009

  110. Microstructural investigation of twins under the fracture surface in AZ31 magnesium alloys Peer-reviewed

    D. Ando, J. Koike

    TMS Annual Meeting 537-540 2009

    ISSN: 1545-4150

  111. Origin of the anomalous {101̄2} twinning during tensile deformation of mg alloy sheet Peer-reviewed

    J. Koike, Y. Sato, D. Ando

    Materials Transactions 49 (12) 2792-2800 2008/12

    DOI: 10.2320/matertrans.MRA2008283  

    ISSN: 1345-9678

    eISSN: 1347-5320

  112. Relationship between deformation-induced surface relief and double twinning in AZ31 magnesium alloy Peer-reviewed

    Daisuke Ando, Junichi Koike

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals 71 (9) 684-687 2007/09

    DOI: 10.2320/jinstmet.71.684  

    ISSN: 0021-4876

    eISSN: 1880-6880

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    日本金属学会講演大会(Web) 175th 2024

  12. Fe-Mn-Al-Cr-C系合金の電気特性に与える熱処理の影響

    竹内喬亮, 飯塚将俊, 飯塚将俊, 監物幸翼, 監物幸翼, 安藤大輔, 石田清仁, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 175th 2024

  13. バナジウム窒化物薄膜の電気特性とその相変化材料としての可能性

    張惟喬, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 175th 2024

  14. The impact of Mn doping on the resistance and structure change behavior of RuTe2

    李世元, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 175th 2024

  15. β-Al3Mg2相の制振特性とその温度依存性

    安藤大輔, 渡部奎侑, HUANG JinXian, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 175th 2024

  16. 渦状押出によるLPSO型Mg-Y-Zn合金の組織変化と機械特性

    辻拓巳, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 175th 2024

  17. L-PBF法で積層造形したGRCop-42の組織や機械的特性に及ぼす時効の影響

    本田若菜, 今野晋也, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 175th 2024

  18. Room-temperature plastic deformation behavior in polycrystalline magnesium

    安藤大輔, 染川英俊

    軽金属 74 (10) 2024

    ISSN: 0451-5994

  19. Effect of Aging in Laser-Powder Bed Fusion Additively Manufactured Cu-4Cr-2Nb for Applying to Heat Exchange System

    本田若菜, 今野晋也, 安藤大輔, 須藤祐司

    日本ガスタービン学会定期講演会講演論文集(CD-ROM) 52nd 2024

    ISSN: 2432-6739

  20. Evaluation of microstructure and mechanical properties of low-density steel fabricated by laser powder bed fusion

    竹内喬亮, 今野晋也, 安藤大輔, 須藤祐司, 須藤祐司

    日本ガスタービン学会定期講演会講演論文集(CD-ROM) 52nd 2024

    ISSN: 2432-6739

  21. Phase change behavior in sputter-deposited RuTe2 thin film

    李世元, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 174th 2024

  22. Effect of Zr addition on age-hardening of Mg-Sc alloys

    南英希, 山口達也, 附田之欣, 会田哲夫, 池田実, 田畑裕信, 山岸奎佑, 安藤大輔

    軽金属学会大会講演概要 144th 2023

    ISSN: 1882-6083

  23. Effect of sputtering condition on constituent phase and electrical property of MnTe2 film

    李世元, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 172nd 2023

  24. Cu微粒子の酸化焼結メカニズム

    竹内喬亮, 安藤大輔, 小池淳一, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 172nd 2023

  25. Electrical properties study of Si-doped GeTe

    姜信英, 金美賢, 逸双, 逸双, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 172nd 2023

  26. Cr-Mn-Te多形変化薄膜の不揮発性相変化メモリへの応用可能性

    金美賢, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 172nd 2023

  27. Piezoresistive effect of Cr2Ge2Te6 crystalline film during tensile test

    王吟麗, 双逸, 中嶋真優, 安藤大輔, 成田史生, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 172nd 2023

  28. Effect of Al addition on Superelasticity of Mg-Sc alloys

    山口達也, 南英希, 附田之欣, 会田哲夫, 池田実, 田畑裕信, 山岸奎佑, 安藤大輔

    軽金属学会大会講演概要 144th 2023

    ISSN: 1882-6083

  29. Mg-Sc合金の人工海水中での腐食挙動とその強度劣化

    原寛輔, 安藤大輔, 油田直也

    日本金属学会講演大会(Web) 173rd 2023

  30. Al-Cu合金の高温強度におけるチタンおよびバナジウムの影響

    黄晋賢, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 173rd 2023

  31. In-situ synthesisによる高剛性Mg-Li-Al-Ca基複合材料の開発

    岩岡葵, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 173rd 2023

  32. Al-Al4(Ca,Sr)共晶合金の機械的特性及び構造変態

    海瀬正人, 安藤大輔, 須藤裕司

    日本金属学会講演大会(Web) 173rd 2023

  33. The electrical resistance change behaviors in MnTe2 film

    LI Shih Yuan, YI Shuang, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 173rd 2023

  34. レーザ粉末床溶融結合法により作製したNiTiワイヤーの特性評価

    片桐大智, 周偉偉, 野村直之, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 173rd 2023

  35. Effect of processing temperature in HPT-straining on work-hardening of Mg-Y-Zn alloy with long-periodic stacking ordered phase

    戸高義一, 足立望, 大越広夢, 染川英俊, 安藤大輔, 湯浅元仁

    軽金属学会大会講演概要 144th 2023

    ISSN: 1882-6083

  36. Low Temperature Oxidation-Sintering Behaviors of Cu Fine Particles

    Takeuchi Nobuaki, Ando Daisuke, Koike Junichi, Sutou Yuji

    Journal of the Japan Institute of Metals and Materials 86 (11) 224-231 2022/11/01

    Publisher: The Japan Institute of Metals and Materials

    DOI: 10.2320/jinstmet.j2022020  

    ISSN: 0021-4876

    eISSN: 1880-6880 2433-7501

    More details Close

    Cu fine-particle paste is a promising material to form a low-cost interconnect for flexible electronics devices. It has been reported that Cu particles can be sintered at low temperature (well below the half of the melting point) through two-step heat treatment processes of oxidation and reduction. However, the mechanism of the low temperature sintering is not clear yet. In this study, we investigated the oxidation sintering process of Cu fine particles by thermal gravimetric analysis (TGA) in the temperature range of 200-300℃, X-ray diffraction (XRD), and microstructural observation. It was found from TGA that the oxidation process was initially rate-controlled by surface reaction and then by Cu diffusion at grain boundaries of Cu2O. Transmission electron microscopy observation revealed the formation of a core (Cu)-shell (Cu2O) structure during the oxidation process. The adjacent Cu2O shells were bonded to each other resulting in a cross-linked structure. The subsequent reduction process led to the formation of a porous structure by oxygen removal, but the cross-linked structure was maintained, which would make the low-temperature sintered Cu body as robust as solidified solder and sintered Ag paste.

  37. Microstructural Observation and Wrought Processing Optimization for Kinking in LPSO Type Mg Alloy

    Mitsuhara Masatoshi, Yamasaki Shigeto, Ando Daisuke

    Materia Japan 61 (9) 543-549 2022/09/01

    Publisher: The Japan Institute of Metals and Materials

    DOI: 10.2320/materia.61.543   10.2320/matertrans.mt-md2022017_references_DOI_TuQpzV6CsZfx6a9NZMIjDoLQAJM   10.2320/matertrans.mt-md2022016_references_DOI_TuQpzV6CsZfx6a9NZMIjDoLQAJM  

    ISSN: 1340-2625

    eISSN: 1884-5843

  38. Cu微粒子の低温酸化焼結・還元挙動

    竹内喬亮, 安藤大輔, 小池淳一, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  39. Changes in Raman spectra during laser heating in polymorphic MnTe film

    金美賢, 森竣祐, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 69th 2022

    ISSN: 2436-7613

  40. Polymorphic transformation behavior in thermal strained MnTe semiconductor film

    森竣祐, WANG Yinli, 安藤大輔, 成田史生, 須藤祐司, 須藤祐司

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 69th 2022

    ISSN: 2436-7613

  41. Texture evolution and mechanical properties of Mg-9Y-6Zn alloy via vortex extrusion

    安藤大輔, 丹野健徳, 湯浅元仁, 染川英俊, 須藤祐司

    軽金属学会大会講演概要 142nd 2022

    ISSN: 1882-6083

  42. Deformation texture evolution and work-hardening behavior by HPT-straining in Mg-Y-Zn alloy with long-periodic stacking ordered phase

    戸高義一, 足立望, 福岡樹, 河野瑞希, 兼田信秀, 染川英俊, 安藤大輔, 湯浅元仁

    軽金属学会大会講演概要 142nd 2022

    ISSN: 1882-6083

  43. Mechanical properties of Mg-Sc alloy showing transformation induced plasticity effect at room temperature

    山岸奎佑, 小川由希子, 安藤大輔, 須藤祐司

    軽金属学会大会講演概要 142nd 2022

    ISSN: 1882-6083

  44. MnTe化合物薄膜の機械的特性と多形変化

    森竣祐, 王吟麗, 安藤大輔, 成田史生, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  45. TRIP効果を利用したMg-Sc合金の高延性化

    山岸奎佑, 小川由希子, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  46. 高抵抗Fe-Cr-Al-Co合金の抵抗温度係数に及ぼす組成および熱処理条件の影響

    監物幸翼, 安藤大輔, 石田清仁, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  47. 軽金属材料への機能性付与を目指して

    安藤大輔

    日本金属学会講演大会(Web) 170th 2022

  48. Mg合金の加水分解に及ぼす組織の影響

    内山智元, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  49. 窒素含有Cr2Ge2Te6相変化材料の光学特性変化

    双逸, 畑山祥吾, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  50. LPSO型Mg-Y-Zn合金における加工硬化挙動に及ぼす塑性変形経路の影響

    戸高義一, 足立望, 福岡樹, 河野瑞希, 兼田信秀, 染川英俊, 安藤大輔, 湯浅元仁

    日本金属学会講演大会(Web) 170th 2022

  51. MnTe薄膜におけるレーザー加熱による多形変化の顕微ラマン観察

    金美賢, 森竣祐, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 170th 2022

  52. Feasibility Study on Development of Heat-resistant Al-based Alloys by Machine Learning

    HUANG Jinxian, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 171st 2022

  53. Mg-Sc合金のB2規則化による室温超弾性特性の向上

    山岸奎佑, 小川由希子, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 171st 2022

  54. Cr-Mn-Te薄膜の多形変化挙動

    金美賢, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 171st 2022

  55. Cr2Ge2Te6薄膜のピエゾレジスティブ特性

    王吟麗, 双逸, 中嶋真優, 安藤大輔, 成田史生, 須藤祐司, 須藤祐司

    日本金属学会講演大会(Web) 171st 2022

  56. レーザ粉末床溶融結合法の造形パラメータがNiTi造形体の超弾性特性に与える影響

    片桐大智, 中谷勇喜, 周偉偉, 野村直之, 安藤大輔, 須藤祐司, 田邊由紀子, 阿部吉彦

    日本金属学会講演大会(Web) 171st 2022

  57. LPSO型Mg-Y-Zn合金における加工硬化挙動に及ぼす加工温度の影響

    戸高義一, 足立望, 大越広夢, 染川英俊, 安藤大輔, 湯浅元仁

    日本金属学会講演大会(Web) 171st 2022

  58. レーザ粉末床溶融結合法により作製したNiTi積層造形体の作製と評価

    中谷勇喜, 片桐大智, 周偉偉, 野村直之, 安藤大輔, 須藤祐司, 田邊由紀子, 阿部吉彦

    粉体粉末冶金協会講演大会(Web) 2022 2022

  59. High stiffness Mg-Li-Al-Ca based matrix compositions through in-situ synthesis method using TiSi2 powder

    岩岡葵, 安藤大輔, 須藤祐司

    軽金属学会大会講演概要 143rd 2022

    ISSN: 1882-6083

  60. 相変態を利用したMg基生体材料の開発

    山岸奎佑, 安藤大輔

    東北大学金属材料研究所共同研究ワークショップ/日本バイオマテリアル学会東北ブロック講演会 2022 2022

  61. The electrical resistivity of Fe-Mn-Al-Cr-C alloy and its dependence on temperature

    竹内喬亮, 飯塚将俊, 安藤大輔, 石田清仁, 須藤祐司, 須藤祐司

    日本金属学会東北支部研究発表大会予稿集 21st (Web) 2022

  62. MnTe多形の相安定性に及ぼすCr添加の影響

    金美賢, 双逸, 安藤大輔, 須藤祐司, 須藤祐司

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 83rd 2022

    ISSN: 2758-4704

  63. Powdering Resistance of galvannealed coating: Verification by Sputtering Method

    薗部駿太, 安藤大輔, 須藤祐司, 栗田大樹, 成田史生

    材料とプロセス(CD-ROM) 35 (2) 2022

    ISSN: 1882-8922

  64. Deformation behavior of LPSO-type Mg97Y2Zn1 alloy by high temperature torsion and its kink strengthening

    藤谷俊孝, 安藤大輔, 須藤祐司

    軽金属学会大会講演概要 140th 2021

    ISSN: 1882-6083

  65. マグネシウム合金の変形・破壊メカニズムとその高機能化に関する研究

    安藤大輔

    マグネシウム 50 (10) 2021

    ISSN: 2188-370X

  66. β→α polymorphic transformation in MnTe films via atomic-displacement

    森竣祐, 安藤大輔, 須藤祐司

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 68th 2021

    ISSN: 2436-7613

  67. 巨大ひずみ加工によるLPSO型Mg合金の硬化挙動に及ぼす加工経路の影響

    福岡樹, 足立望, 戸高義一, 染川英俊, 安藤大輔, 湯浅元仁

    日本金属学会講演大会(Web) 168th 2021

  68. ECAP加工に供したMg-Y-Zn合金の組織と局所硬さの関係

    星野孝男, 湯浅元仁, 湯浅元仁, 安藤大輔, 染川英俊, 宮本博之

    日本金属学会講演大会(Web) 168th 2021

  69. Mg-Sc合金の超弾性特性に及ぼす時効硬化の影響

    山岸奎佑, 小川由希子, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 168th 2021

  70. 機械的拘束下におけるMnTe薄膜のβ→α多形変化メカニズム

    森竣祐, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 168th 2021

  71. Cr2Ge2Te6メモリデバイスの動作エネルギーに及ぼすコンタクト抵抗の影響

    畑山祥吾, 阿部泰寛, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 168th 2021

  72. 異常粒成長を利用した単結晶Mg-Sc合金の作製とその超弾性特性

    山岸奎佑, ONYAM Karn, 小川由希子, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 169th 2021

  73. 多形MnTe薄膜における電気伝導機構

    金美賢, 森竣祐, 双逸, 畑山祥吾, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 169th 2021

  74. Al4Ba型金属間化合物を利用した耐熱Al合金の開発

    安藤大輔, 冨田航平, 須藤祐司

    日本金属学会講演大会(Web) 169th 2021

  75. キンク強化とキンク組織に及ぼす展伸加工法の影響

    染川英俊, 戸高義一, 安藤大輔, 湯浅元仁

    日本金属学会講演大会(Web) 169th 2021

  76. 塑性加工プロセスがキンク形成に及ぼす影響

    湯浅元仁, 湯浅元仁, 染川英俊, 戸高義一, 安藤大輔, 宮本博之

    日本金属学会講演大会(Web) 169th 2021

  77. Polymorphic transformation mechanism and kinetic study in MnTe semiconductor films

    森竣祐, 安藤大輔, 須藤祐司

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 82nd 2021

    ISSN: 2758-4704

  78. ウルツ鉱型MnTe薄膜における電気伝導機構

    金美賢, 森竣祐, 双逸, 畑山祥吾, 安藤大輔, 須藤祐司

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 82nd 2021

    ISSN: 2436-7613

  79. Resistive switching chracteristics in a p-MnTe/n-AZO stacked layer

    Kim Mihyeon, Mori Shunsuke, Ando Daisuke, Sutou Yuji

    JSAP Annual Meetings Extended Abstracts 2020.2 2176-2176 2020/08/26

    Publisher: The Japan Society of Applied Physics

    DOI: 10.11470/jsapmeeting.2020.2.0_2176  

    ISSN: 2758-4704

    eISSN: 2436-7613

  80. Diode characteristics of MnTe/Oxide layerd structure

    Kim Mihyeon, Mori Shunsuke, Ando Daisuke, Sutou Yuji

    JSAP Annual Meetings Extended Abstracts 2020.1 3229-3229 2020/02/28

    Publisher: The Japan Society of Applied Physics

    DOI: 10.11470/jsapmeeting.2020.1.0_3229  

    ISSN: 2436-7613

    eISSN: 2436-7613

  81. Development of Magnesium based shape memory alloys

    安藤大輔, 須藤祐司

    軽金属 70 (7) 2020

    ISSN: 0451-5994

  82. Microstructure and mechanical properties of Mg-Y-Zn alloys processed by Equal-Channel-Angular-Pressing

    星野孝男, 湯浅元仁, 湯浅元仁, 安藤大輔, 染川英俊, 宮本博之

    軽金属学会大会講演概要 138th 2020

    ISSN: 1882-6083

  83. Kink band formation in Mg97Y2Zn1 alloy with mille-feuille structure under hot torsion

    安藤大輔, 藤谷俊孝, 須藤祐司

    軽金属学会大会講演概要 138th 2020

    ISSN: 1882-6083

  84. Relationship between strain distribution and hardness of Mg-Y-Zn alloy processed by severe plastic deformation

    湯浅元仁, 湯浅元仁, 星野孝男, 中筋悠斗, 中筋悠斗, 安藤大輔, 染川英俊, 宮本博之

    軽金属学会大会講演概要 138th 2020

    ISSN: 1882-6083

  85. Microstructure of Mg-Y-Zn alloys with various LPSO volume fraction under hot torsion

    藤谷俊孝, 安藤大輔, 須藤祐司

    軽金属学会大会講演概要 138th 2020

    ISSN: 1882-6083

  86. Deformation-kink-bands and mechanical properties of Mg-Y-Zn alloys with LPSO phases processed by ECAP

    星野孝男, 湯浅元仁, 湯浅元仁, 安藤大輔, 染川英俊, 宮本博之

    軽金属学会大会講演概要 139th 2020

    ISSN: 1882-6083

  87. Optical and electrical switching induced by displacive transformation in MnTe films

    森竣祐, 安藤大輔, 須藤祐司

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 67th 2020

    ISSN: 2436-7613

  88. MnTe薄膜の変位型相転移

    森竣祐, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 167th 2020

  89. MgY2Zn1合金におけるECAP材の微視的構造と機械特性

    星野孝男, 湯浅元仁, 湯浅元仁, 安藤大輔, 染川英俊, 宮本博之

    日本金属学会講演大会(Web) 167th 2020

  90. 多形MnTe/AZO積層構造による自己選択性PCRAMへの可能性

    金美賢, 森竣祐, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 167th 2020

  91. ミルフィーユ構造を有するMg94.75Gd3.5Zn1.75合金の集合組織および機械特性に与える異周速熱間圧延の効果

    安藤大輔, 内山愛文, 内山愛文, 染川英俊, 井上晋一, 山崎倫昭, 河村能人, 須藤祐司

    日本金属学会講演大会(Web) 167th 2020

  92. 単結晶Mg-Sc合金における超弾性特性

    山岸奎佑, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 166th 2020

  93. 巨大ひずみ加工によるLPSO型Mg合金の加工硬化挙動

    福岡樹, 足立望, 戸高義一, 染川英俊, 安藤大輔, 湯浅元仁

    日本金属学会講演大会(Web) 166th 2020

  94. MnTe薄膜の高速結晶多形変化メカニズム

    森竣祐, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 166th 2020

  95. 逆抵抗変化型Cr2Ge2Te6相変化材料の局所構造変化

    畑山祥吾, イ シュアン, フォンス ポール, フォンス ポール, 齊藤雄太, コロボフ アレキサンダー, コロボフ アレキサンダー, 小林啓介, 進藤怜史, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 166th 2020

  96. MgGd3.5Zn1.75合金の等速および異周速熱間圧延材の組織と機械特性

    内山愛文, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 166th 2020

  97. Operation mechanism in MnTe-based phase change memory accompanied by polymorphic transformation

    森竣祐, 安藤大輔, 須藤祐司

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 81st 2020

    ISSN: 2758-4704

  98. Understanding local structure of Cr2Ge2Te6 phase change material for non-volatile memory application

    畑山祥吾, YI Shuang, FONS Paul, FONS Paul, 齊藤雄太, KOLOBOV Alexander V., KOLOBOV Alexander V., 小林啓介, 進藤怜史, 安藤大輔, 須藤祐司

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 67th 2020

    ISSN: 2436-7613

  99. No. 6 マグネシウム(Magnesium)

    安藤 大輔

    まてりあ 58 (11) 593-593 2019/11/01

    Publisher: 公益社団法人 日本金属学会

    DOI: 10.2320/materia.58.593  

    ISSN: 1340-2625

    eISSN: 1884-5843

  100. Effect of an oxide layer at Co/Si interface on Schottky barrier height and contact resistivity

    城戸光一, 佐藤謙, 黒田理人, 安藤大輔, 須藤祐司, 小池淳一

    電子情報通信学会技術研究報告 119 (239) 35-38 2019/10/23

    Publisher: 電子情報通信学会

    ISSN: 0913-5685

  101. 異なるLPSO相量を有するMg-Zn-Gd系合金圧延材の機械特性と組織の関係

    内山愛文, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 164th 2019

    ISSN: 2433-3093

  102. Mg-Sc二元系合金の室温超弾性における粒径依存性

    山岸奎佑, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 164th 2019

    ISSN: 2433-3093

  103. Mg-Y-Zn合金溝ロール材の微細組織と力学特性

    染川英俊, 安藤大輔

    日本金属学会講演概要(CD-ROM) 164th 2019

    ISSN: 2433-3093

  104. Ti-Mo-Cコーティングの硬さおよび摩擦摩耗特性に及ぼす成膜圧力の影響

    須藤祐司, 関谷暢, 安藤大輔, 小池淳一

    日本金属学会講演概要(CD-ROM) 164th 2019

    ISSN: 2433-3093

  105. Al-Ca共晶合金におけるAl4Ca相のマルテンサイト変態及び擬弾性挙動

    冨田航平, 安藤大輔, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 136th 2019

    ISSN: 1882-6083

  106. 粒径制御によるMg-Sc二元系合金の室温超弾性特性の向上

    山岸奎佑, 安藤大輔, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 136th 2019

    ISSN: 1882-6083

  107. 異なるLPSO相量を有するMg-Zn-Gd系合金圧延材の機械特性と組織の関係

    内山愛文, 安藤大輔, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 136th 2019

    ISSN: 1882-6083

  108. Mg-Gd-Zn合金の熱間圧延特性に対する初期組織の影響

    内山愛文, 安藤大輔, 須藤祐司

    軽金属学会大会講演概要 137th 2019

    ISSN: 1882-6083

  109. ミルフィーユ構造を含むMg97Zn1Y2合金のねじり塑性変形挙動

    安藤大輔, 内山愛文, 藤谷俊孝, 須藤祐司

    軽金属学会大会講演概要 137th 2019

    ISSN: 1882-6083

  110. Al4Ba型構造の金属間化合物を含有するAl-X合金の機械的特性及び構造変態

    冨田航平, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  111. Mg-Sc合金の再結晶集合組織形成に及ぼす加工熱処理の影響

    山岸奎佑, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  112. 新規自己潤滑性コーティングの創成に向けた酸化物の摩擦係数の評価

    島守日菜, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  113. 逆抵抗変化型Cr2Ge2Te6相変化材料のメモリ特性

    畑山祥吾, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  114. (Cr,Al)酸化物コーティングの硬さに及ぼす成膜条件の影響

    市川大樹, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  115. PN Junction Based Self-selective Property in N-doped Cr2Ge2Te6 Phase Change Memory

    双逸, 畑山祥吾, AN Jun-Seop, 安藤大輔, SONG Yun-Heub, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  116. Mg-Gd-Zn系合金における熱間圧延で生じるキンク帯とその機械特性

    内山愛文, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  117. Mg-Zn-Y系合金におけるねじり塑性変形挙動

    安藤大輔, 内山愛文, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  118. MnTe多形体薄膜の相変化

    森竣祐, 安藤大輔, 須藤祐司

    日本金属学会講演大会(Web) 165th 2019

  119. MnTeスパッタリング薄膜の加熱による相変化

    森竣祐, 安藤大輔, 須藤祐司

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 80th 2019

    ISSN: 2758-4704

  120. Cu2GeTe3相変化メモリにおける動作エネルギーの電極面積依存性

    飯島平, 安藤大輔, 須藤祐司, AN Jun Seop, SONG Yun Heub

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 80th 2019

    ISSN: 2758-4704

  121. 集合組織制御されたマグネシウム合金圧延板のV曲げ特性

    安藤大輔, 佐藤雅彦, 黄新せい, 伊藤友美, 行武栄太郎

    軽金属学会研究部会報告書 (72) 2019

  122. 低抵抗アモルファスCr2Ge2Te6の電気伝導機構

    畑山祥吾, 須藤祐司, 安藤大輔, 小池淳一, 小林啓介, 小林啓介

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 66th 2019

    ISSN: 2436-7613

  123. アモルファスCr2Ge2Te6相変化材料の電気伝導機構

    畑山祥吾, 須藤祐司, 安藤大輔, 小池淳一, 小林啓介, 小林啓介

    日本金属学会講演概要(CD-ROM) 164th 2019

    ISSN: 2433-3093

  124. 形状記憶合金-最近の材料開発と応用の発展(上)Mg合金におけるマルテンサイト変態と形状記憶特性

    小川由希子, 須藤祐司, 安藤大輔, 小池淳一

    金属 88 (8) 2018

    ISSN: 0368-6337

  125. マグネシウム合金の変形機構解明および新規合金開発

    安藤大輔

    軽金属学会大会講演概要 135th 2018

    ISSN: 1882-6083

  126. 集合組織制御されたAZ31Bマグネシウム合金圧延板のV曲げ特性

    安藤大輔, 佐藤雅彦, HUANG Xinsheng, 伊藤友美, 行武栄太郎

    軽金属学会大会講演概要 135th 2018

    ISSN: 1882-6083

  127. MnTe薄膜の相変化に伴う物性変化

    森竣祐, 須藤祐司, 安藤大輔, 小池淳一

    日本金属学会講演概要(CD-ROM) 163rd 2018

    ISSN: 2433-3093

  128. Mg-Sc合金のマルテンサイト変態および超弾性特性

    山岸奎佑, 小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 163rd 2018

    ISSN: 2433-3093

  129. Al-Ca合金におけるAl4Ca相のマルテンサイト変態及び機械的特性

    冨田航平, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 163rd 2018

    ISSN: 2433-3093

  130. 先端半導体素子の高性能化・高信頼化を目指した配線材料および配線形成プロセスに関する研究

    小池淳一, 小池淳一, 須藤祐司, 安藤大輔

    日本金属学会講演概要(CD-ROM) 162nd 2018

    ISSN: 2433-3093

  131. 粒界構造制御によるマグネシウム合金の特性改質

    染川英俊, 戸高義一, 安藤大輔, 湯浅元仁

    日本金属学会講演概要(CD-ROM) 163rd 2018

    ISSN: 2433-3093

  132. 高抵抗Fe-Mn-Al-Cr-C合金の比抵抗および温度係数に及ぼすα/γ相分率の影響

    飯塚将俊, 須藤祐司, 安藤大輔, 小池淳一, 石田清仁

    日本金属学会講演概要(CD-ROM) 163rd 2018

    ISSN: 2433-3093

  133. α-MnTe薄膜の光学および電気特性に及ぼす組成の影響

    森竣祐, 須藤祐司, 安藤大輔, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 65th 2018

    ISSN: 2436-7613

  134. Cr2Ge2Te6を用いた相変化メモリの動作特性

    畑山祥吾, 須藤祐司, 安藤大輔, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 65th 2018

    ISSN: 2436-7613

  135. Cr2Ge2Te6-Based PCRAM Showing Low Resistance Amorphous and High Resistance Crystalline States

    畑山祥吾, 須藤祐司, 安藤大輔, 小池淳一

    電子情報通信学会技術研究報告 118 (241(SDM2018 52-63)) 2018

    ISSN: 0913-5685

  136. 逆抵抗変化Cr2Ge2Te6相変化材料の結晶化メカニズム

    畑山祥吾, 須藤祐司, 安藤大輔, 小池淳一, 齊藤雄太, 進藤怜史, 進藤怜史, SONG Yun-Heub

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 79th 2018

    ISSN: 2758-4704

  137. 超軽量形状記憶マグネシウム合金の開発

    須藤 祐司, 小川由 希子, 安藤 大輔, 小池 淳一

    47 (2) 5-8 2017/02

    Publisher: カロス出版

    ISSN: 0285-5240

  138. Mg-Sc基合金における時効硬化挙動

    安藤大輔, 竹内悠太, 須藤祐司, 小川由希子, 小池淳一

    軽金属学会大会講演概要 133rd 2017

    ISSN: 1882-6083

  139. bcc/hcp相変態を利用したhcp単相Mg-Sc合金の集合組織制御

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 160th 2017

    ISSN: 2433-3093

  140. α-MnTe薄膜の光学および電気的特性

    森竣祐, 須藤祐司, 安藤大輔, 小池淳一

    日本金属学会講演概要(CD-ROM) 161st 2017

    ISSN: 2433-3093

  141. Fe-Mn-Al-C系高抵抗合金の比抵抗およびその温度係数に及ぼす熱処理の影響

    飯塚将俊, 須藤祐司, 安藤大輔, 小池淳一, 石田清仁

    日本金属学会講演概要(CD-ROM) 161st 2017

    ISSN: 2433-3093

  142. Mg-Sc合金の時効析出過程

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一, 染川英俊

    日本金属学会講演概要(CD-ROM) 161st 2017

    ISSN: 2433-3093

  143. Cr-Mo-Cu-N被膜の機械的性質および膜組織に及ぼす基板加熱の影響

    鈴木優太, 須藤祐司, 安藤大輔, 小池淳一

    日本金属学会講演概要(CD-ROM) 161st 2017

    ISSN: 2433-3093

  144. Mg-Sc合金へのZn添加がマルテンサイト変態温度並びに形状記憶特性に与える影響

    竹内悠太, 小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 161st 2017

    ISSN: 2433-3093

  145. 亜酸化銅の形成による銅ペーストの低温焼成

    城戸光一, 斎藤友大, ホアン チハイ, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 160th 2017

    ISSN: 2433-3093

  146. マグネシウム合金における変形双晶の役割とマルテンサイト変態への展開

    安藤大輔

    日本金属学会講演概要(CD-ROM) 161st 2017

    ISSN: 2433-3093

  147. Mg-Y合金における球形圧子を用いたナノインデンテーション応答

    安藤大輔, 須藤祐司, 小池淳一, POOLE Warren

    日本金属学会講演概要(CD-ROM) 160th 2017

    ISSN: 2433-3093

  148. LSI多層配線の単層拡散バリア層としての非晶質コバルト合金の特性

    HOSSEINI Maryamsadat, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 64th 2017

    ISSN: 2436-7613

  149. LSI配線におけるZn添加によるCu/SiO2間の相互拡散バリア性評価

    城戸光一, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 78th 2017

    ISSN: 2758-4704

  150. Cu配線を用いたSi太陽電池におけるTa酸化物バリア層の特性評価

    青山悠生, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 78th 2017

    ISSN: 2758-4704

  151. 第11回本会派遣JIM/TMS Young Leader International Scholar出張報告

    安藤 大輔

    まてりあ 56 (6) 404-404 2017

    Publisher: 公益社団法人 日本金属学会

    DOI: 10.2320/materia.56.404  

    ISSN: 1340-2625

    eISSN: 1884-5843

  152. 青色レーザーを用いたCu電極とSi太陽電池基板間のコンタクト形成

    雑賀真晃, 安藤大輔, 須藤祐司, 小池淳一, 坂本隼規, 諏訪雅也, 東條公資, 山蔭康弘

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 64th 2017

    ISSN: 2436-7613

  153. 青色レーザーを用いたCu電極とSi太陽電池基板間のコンタクト形成

    雑賀真晃, 安藤大輔, 須藤祐司, 小池淳一, 坂本隼規, 諏訪雅也, 東條公資, 山蔭康弘

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 78th 2017

    ISSN: 2436-7613

  154. Mg-Sc合金の機械的・機能的性質に及ぼす組織の影響

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 158th 2016

    ISSN: 2433-3093

  155. Cr-Mo-N被膜の硬度および耐摩耗性に及ぼすCu添加の影響

    鈴木優太, 小池淳一, 須藤祐司, 安藤大輔

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  156. BCC+HCP二相組織を有するMg-Sc-Zn合金の機械的性質

    竹内悠太, 小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  157. Cu合金を用いた超微細配線へのダイナミックリフロー挙動

    齋藤友大, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  158. bcc型Mg-Sc合金における超弾性効果の発現

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  159. 超微細LSI配線におけるアモルファスCo-Hf合金の拡散バリア層としての可能性

    小出紘之, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  160. Ti-V-C-N膜の硬さおよび摩耗特性

    澁谷臨, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  161. LSI多層配線におけるCuリフロー挙動の拡散クリープ機構による考察

    佐藤宏太郎, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  162. プライマー層を用いたCu/AlN接合界面の密着強度改善

    佐藤宏太郎, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 63rd 2016

    ISSN: 2436-7613

  163. CVD法によるMnOx拡散バリア層の形成に伴うポーラスSiOCHへのMn拡散

    小出紘之, WANG Hao, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 63rd 2016

    ISSN: 2436-7613

  164. Cu配線を用いたシリコン太陽電池における作製プロセスの最適化

    青山悠生, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 77th 2016

    ISSN: 2758-4704

  165. 並列抵抗変化によるシリコン太陽電池PID挙動の解析

    小野寺幸貴, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 77th 2016

    ISSN: 2758-4704

  166. The Role of Deformation Twinning on Magnesium Alloy during Tensile Deformation and Development of Novel Magnesium Alloy

    Ando Daisuke

    Materia Japan 55 (8) 377-381 2016

    Publisher: The Japan Institute of Metals and Materials

    DOI: 10.2320/materia.55.377   10.2497/jjspm.66.547_references_DOI_XAIGWtMCsD7pbaGRQEduNZDF96w  

    ISSN: 1340-2625

    eISSN: 1884-5843

  167. 青色レーザーによるSiN反射防止膜除去とCu電極太陽電池セルの電気特性

    雑賀真晃, 安藤大輔, 須藤祐司, 小池淳一, 坂本隼規, 諏訪雅也, 東條公資, 山蔭康弘

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 77th 2016

    ISSN: 2436-7613

  168. Cr-Ge-Te化合物薄膜の相変化挙動

    畑山祥吾, 進藤怜史, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 63rd 2016

    ISSN: 2436-7613

  169. W電極/GeCu2Te3相変化材料間のコンタクト抵抗

    進藤怜史, 須藤祐司, 安藤大輔, 小池淳一, 齊藤雄太

    日本金属学会講演概要(CD-ROM) 159th 2016

    ISSN: 2433-3093

  170. Mg-Y希薄合金の一軸引張試験における変形・破壊挙動の調査

    安藤大輔, 鈴木哲, HUO Qinghuan, 小川由希子, 小池淳一

    軽金属学会大会講演概要 128th 2015

    ISSN: 1882-6083

  171. Mg-Y希薄合金の一軸および二軸引張変形による集合組織変化

    鈴木哲, 安藤大輔, 小川由希子, 染川英俊, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 128th 2015

    ISSN: 1882-6083

  172. Mg-Sc合金の時効硬化挙動

    小川由希子, 安藤大輔, 鈴木哲, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 128th 2015

    ISSN: 1882-6083

  173. bcc+hcp二相組織を有するMg-Sc合金の時効硬化挙動

    小川由希子, 安藤大輔, 鈴木哲, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 156th 2015

    ISSN: 2433-3093

  174. 時効硬化したMg-Sc合金の機械的特性

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 157th 2015

    ISSN: 2433-3093

  175. 双晶を考慮した六方晶の結晶塑性モデルによるMgY合金成形限界解析

    村松眞由, 寺田賢二郎, 安藤大輔, 小池淳一

    日本金属学会講演概要(CD-ROM) 157th 2015

    ISSN: 2433-3093

  176. Mg-Y希薄合金押出材における変形双晶形成機構の初期結晶配向依存性

    鈴木哲, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 157th 2015

    ISSN: 2433-3093

  177. Mo含有硬質被膜のH/E*と摩擦摩耗の関係

    豊田智亮, 市村康, 小宮山翔子, 小宮山翔子, 安藤大輔, 須藤祐司, 小池淳一, 王び

    日本金属学会講演概要(CD-ROM) 157th 2015

    ISSN: 2433-3093

  178. Mg-Y希薄合金のエリクセン試験による組織変化観察

    鈴木哲, 安藤大輔, 小川由希子, 染川英俊, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 156th 2015

    ISSN: 2433-3093

  179. Y極希薄添加Mg合金押出材の室温引張変形挙動

    安藤大輔, 鈴木哲, 小川由希子, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 156th 2015

    ISSN: 2433-3093

  180. c-Si太陽電池電極向けスクリーン印刷用銅ペーストの特性評価

    大坪賢明, 櫻井孝之, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 76th 2015

    ISSN: 2758-4704

  181. Cr-Ge-Te薄膜の相変化挙動

    畑山祥吾, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会秋季学術講演会講演予稿集(CD-ROM) 76th 2015

    ISSN: 2758-4704

  182. BCC/HCP二相組織を有するMg-Sc合金の機械強度と組織

    安藤大輔, 鈴木哲, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 126th 2014

    ISSN: 1882-6083

  183. Mg-0.6at.%Y合金における熱間圧延及び静的再結晶による組織変化の観察

    鈴木哲, 安藤大輔, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 126th 2014

    ISSN: 1882-6083

  184. 結晶塑性FEMとMulti Phase Field法を用いたMgY合金の連成解析

    寺田賢二郎, 石田智広, 安藤大輔, 小池淳一

    日本金属学会講演概要(CD-ROM) 154th 2014

    ISSN: 2433-3093

  185. Mo-O-N系薄膜の内部組織および摩擦摩耗特性

    須藤祐司, 小宮山翔子, 小宮山翔子, 安藤大輔, 小池淳一, WANG Mei

    日本金属学会講演概要(CD-ROM) 155th 2014

    ISSN: 2433-3093

  186. Mg-Y合金の室温変形による動的再結晶組織形成過程の観察

    安藤大輔, 鈴木哲, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 154th 2014

    ISSN: 2433-3093

  187. Ti-Mo-C-N膜の硬さおよび摩擦摩耗特性

    豊田智亮, 小宮山翔子, 小宮山翔子, 安藤大輔, 須藤祐司, 小池淳一, WANG Mei

    日本金属学会講演概要(CD-ROM) 155th 2014

    ISSN: 2433-3093

  188. Mg-Sc合金におけるhcp+bcc二相領域の決定および二相合金の機械的性質

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 155th 2014

    ISSN: 2433-3093

  189. BCC/HCP二相Mg-Sc合金の時効硬化挙動

    安藤大輔, 小川由希子, 鈴木哲, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 155th 2014

    ISSN: 2433-3093

  190. Cu/Si界面のMn酸化物拡散バリア層の特性評価

    田辺成俊, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 155th 2014

    ISSN: 2433-3093

  191. 種々の酸素流量で成膜した二元系Fe-O薄膜の電気的特性

    小川由希子, 須藤祐司, 安藤大輔, 小池淳一

    応用物理学会春季学術講演会講演予稿集(CD-ROM) 61st 2014

    ISSN: 2436-7613

  192. Deformation twinning model of HCP metals and its application to finite crystal plasticity FEM

    Ishida Tomohiro, Shibutani Shinpei, Kato Junji, Terada Kenjiro, Kyoya Takashi, Ando Daisuke, Koike Junichi

    NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 62nd 196 2013

    Publisher: National Committee for IUTAM

    DOI: 10.11345/japannctam.62.0.196.0  

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    A thermodynamics-based constitutive model, which accounts for both crystallographic slip and deformation twinning, is developed for hcp metals within the framework of crystal plasticity finite element methods. While the volume fractions of stress-free twin deformations are introduced as internal variables, the free-energy involves the bulk energy of separate phases and the surface energy at twin interfaces, which are introduced as functions of the internal variables, in addition to the standard hardening-related energy in crystal plasticity framework. A series of numerical examples is presented to verify the performance of the proposed model in predicting the deformation twinning.

  193. 六方晶金属の変形双晶モデルの構築とその結晶塑性シミュレーションへの適用

    石田智広, 渋谷慎兵, 京谷孝史, 安藤大輔, 小池淳一, 加藤準治, 寺田賢二郎

    日本金属学会講演概要(CD-ROM) 152nd 2013

    ISSN: 2433-3093

  194. Deformation and Strength Characterization of Mg Alloys with Rolled Crystallographic Textures by Crystal Plasticity Finite Element Method

    石田智広, 渋谷慎兵, 加藤準治, 寺田賢二郎, 京谷孝史, 安藤大輔, 小池淳一

    日本機械学会論文集 A編(Web) 79 (808) 2013

    ISSN: 1884-8338

  195. Yを極微量添加したMg合金の室温圧縮変形による再結晶組織形成過程の観察

    安藤大輔, 須藤祐司, 小池淳一, 染川英俊, 向井敏司

    日本金属学会講演概要(CD-ROM) 152nd 2013

    ISSN: 2433-3093

  196. RFマグネトロンスパッタにより成膜したFe-O-N薄膜の電気的特性評価

    小川由希子, 小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 153rd 2013

    ISSN: 2433-3093

  197. 湿式処理によるCu/Si界面の拡散バリア層の形成

    田辺成俊, 田辺成俊, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 153rd 2013

    ISSN: 2433-3093

  198. 新規銅ペーストと界面層を用いた単結晶Si太陽電池の特性

    金政植, 金政植, HAI Hoang Tri, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 153rd 2013

    ISSN: 2433-3093

  199. Mo-B-N系スパッタ薄膜の耐摩耗性

    羽根川智, 羽根川智, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 153rd 2013

    ISSN: 2433-3093

  200. n型4H-SiCにおけるワイヤボンドCu/Nb電極の反応挙動および密着性

    亀田和也, 亀田和也, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 152nd 2013

    ISSN: 2433-3093

  201. OS0317 Deformation twinning model of HCP metals and its application to finite crystal plasticity FEM

    ISHIDA Tomohiro, SHIBUTANI Shinpei, KATO Junji, TERADA Kenjiro, KYOYA Takashi, ANDO Daisuke, KOIKE Junichi

    The Proceedings of the Materials and Mechanics Conference 2012 "OS0317-1"-"OS0317-3" 2012/09/22

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmemm.2012._os0317-1_  

    ISSN: 2424-2845

    eISSN: 2424-2845

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    A thermodynamics-based constitutive model, which accounts for both crystallographic slip and deformation twinning, is developed for a single crystal of hcp metals within the framework of finite crystal plasticity. While the volume fractions of stress-free twin deformations are introduced as internal variables, the free-energy involves the bulk energy of separate phases and the surface energy at twin interfaces, which are introduced as functions of the internal variables, in addition to the standard hardening-related energy in crystal plasticity framework. After the formulation is described in detail, a series of numerical examples is presented to verify the performance of the proposed model in predicting the deformation twinning, the successive deformation process and the twinning-induced stress responses. The results are studied with reference to the theoretical consequences and the experimental results reported in the literature.

  202. OS0316 The relationships between the amounts of localized deformation and deformation twin type

    ANDO Daisuke, SUTOU Yuji, KOIKE Junichi, ISHIDA Tomohiro, SIBUTANI Sinpei, KATO Jungi, TERADA Kenzirou, KYOYA Takashi

    The Proceedings of the Materials and Mechanics Conference 2012 "OS0316-1"-"OS0316-3" 2012/09/22

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmemm.2012._os0316-1_  

    ISSN: 2424-2845

    eISSN: 2424-2845

    More details Close

    In this study, the origin of amounts of localized strain in basal textured Magnesium alloy sheets was investigated. First, grid patterns were drawn on a top surface of sample by Focus Ion Beam system. And then, a distribution of crystal orientation from same area was observed by SEM/EBSD. From these methods, the relationship between the localized strain and crystal orientation was revealed. In generally, the amounts of strains are dependent on the crystal orientation, which means the facility of slip deformation. However, my results show that localized strain is dependent on the existence or absence of twins and twin types, and but not on the Schmid factor of basal slip. And I suggest that {1012} type has the roll of strain accommodation to satisfy the strain compatibility with neighbor grain in primary deformation stage and continue to cancel the strain of slip during deformation. So the grain with {10-12} type slightly deformed. On the other hand, {10-11} type has the roll of accommodation strain component to conform to externally applied stress. But {10-11} twin easily generate double twin. And the grain with double twin localized severely deformed and formed surface steps or cracks.

  203. 結晶塑性FEMによるマグネシウム合金の強度発現機構の解明

    石田智広, 渋谷慎兵, 加藤準治, 寺田賢二郎, 京谷孝史, 安藤大輔, 小池淳一

    計算工学講演会論文集(CD-ROM) 17 2012

    ISSN: 1342-145X

  204. アミディネート前駆体を用いたCVD法によるMnOxの形成

    黒川温子, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会学術講演会講演予稿集(CD-ROM) 73rd 2012

  205. 反応性スパッタリングにより形成したFe-O-N系薄膜の電気的特性

    小川由希子, 安藤大輔, 須藤祐司, 小池淳一

    応用物理学会学術講演会講演予稿集(CD-ROM) 73rd 2012

  206. 反応性スパッタにより作製したN-doped Cu2O半導体薄膜の電気・光学特性評価

    土屋慶幸, 土屋慶幸, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 151st 2012

    ISSN: 2433-3093

  207. Mg に魅せられて

    安藤 大輔

    まてりあ 51 (6) 265-265 2012

    Publisher: 公益社団法人 日本金属学会

    DOI: 10.2320/materia.51.265  

    ISSN: 1340-2625

    eISSN: 1884-5843

  208. AZ31マグネシウム合金における疲労破壊の粒径依存性

    安藤大輔, 藤山直人, 須藤祐司, 小池淳一

    日本金属学会講演概要 148th 2011

    ISSN: 1342-5730

  209. AZ31マグネシウム合金における片振引張疲労破壊の粒径依存性

    安藤大輔, 須藤祐司, 小池淳一

    軽金属学会大会講演概要 121st 2011

    ISSN: 1882-6083

  210. AZ31マグネシウム合金における変形双晶界面構造観察

    安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 149th 2011

    ISSN: 2433-3093

  211. アミディネート前駆体を用いたMn酸化物の化学気相成長

    黒川温子, PHUONG N.M., 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 149th 2011

    ISSN: 2433-3093

  212. Cu-Mn合金の電気抵抗率に及ぼす熱処理時の酸素圧と温度の影響

    安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要(CD-ROM) 149th 2011

    ISSN: 2433-3093

  213. マグネシウム合金の変形・破壊機構における転位と双晶の役割

    安藤 大輔, 小池 淳一, 須藤 祐司

    金属 80 (11) 940-944 2010/11

    Publisher: アグネ技術センター

    ISSN: 0368-6337

  214. AZ31マグネシウム合金における室温粒界すべりの断面観察

    安藤大輔, 安藤大輔, 藤山直人, 藤山直人, 須藤祐司, 小池淳一

    日本金属学会講演概要 146th 2010

    ISSN: 1342-5730

  215. AZ31マグネシウム合金の二重双晶形成機構とシュミット因子の関係

    安藤大輔, 小池淳一

    日本金属学会講演概要 145th 2009

    ISSN: 1342-5730

  216. AZ31マグネシウム合金の疲労限と変形双晶の関係

    藤山直人, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要 145th 2009

    ISSN: 1342-5730

  217. AZ31マグネシウム合金における二重双晶によるクラック形成過程の観察

    安藤大輔, 藤山直人, 須藤祐司, 小池淳一

    日本金属学会講演概要 144th 2009

    ISSN: 1342-5730

  218. Fabrication of Synthetic Ferrimagnetic Structures with Both High Annealing Stability and Strong Interlayer Exchange Coupling

    Nishimura M., Watanabe D., Oogane M., Ando Y.

    Journal of the Magnetics Society of Japan 33 (3) 266-269 2009

    Publisher: The Magnetics Society of Japan

    DOI: 10.3379/msjmag.0903re8054  

    ISSN: 1882-2924

    eISSN: 1882-2932

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    We investigated the dependencies of the saturation field, Hs, for synthetic ferrimagnetic (SyF) structures with various stacking structures on annealing temperature and Ru middle layer thickness. The buffer layer was optimized using Co75Fe25/Ru/Co75Fe25-SyF. The SyF on the Ta/Ru buffer layer demonstrated high annealing stability and large Hs. Moreover, we investigated the dependence on annealing temperature of Hs for Ta(5 nm)/Ru(5 nm)/ ferromagnetic-layer/Ru(0.8 nm)/Co40Fe40B20(2 nm) SyFs with various ferromagnetic layers. The SyFs using Co75 Fe25 and Ni80Fe20 ferromagnetic layers exhibited high annealing stability and large Hs. The dependence on Ru middle layer thickness of Hs for the SyFs consisting of Ta(5 nm)/Ru(5 nm)/Co75 Fe25(2 nm)/Ru(0.2-1.2 nm)/Co40Fe40B20(2 nm)/ MgO(2.5 nm)/Ta(10 nm) was investigated. As a result, we demonstrated the possibility of fabricating CoFeB/MgO/ CoFeB MTJs with SyF having both high annealing stability and strong interlayer exchange coupling.

  219. AZ31マグネシウム合金の破断面の組織学的形態と内部双晶タイプの関係

    安藤大輔, 安藤大輔, 小池淳一

    日本金属学会講演概要 142nd 2008

    ISSN: 1342-5730

  220. 微小ひずみ領域におけるAZ31マグネシウム合金の変形挙動

    藤山直人, 安藤大輔, 須藤祐司, 小池淳一

    日本金属学会講演概要 143rd 2008

    ISSN: 1342-5730

  221. {1011}-{1012}二重双晶のシュミット因子と表面起伏の関係

    安藤大輔, 藤山直人, 須藤祐司, 小池淳一

    日本金属学会講演概要 143rd 2008

    ISSN: 1342-5730

  222. マグネシウム合金における破壊起点となる双晶タイプ

    安藤大輔, 小池淳一

    軽金属学会大会講演概要 115th 2008

    ISSN: 1882-6083

  223. マグネシウム合金における変形双晶の重要性

    小池淳一, 安藤大輔

    軽金属学会大会講演概要 115th 2008

    ISSN: 1882-6083

  224. Formation and Developments of Spintronics Research Field

    Miyazaki Terunobu, Oogane Mikihiko, Sakuraba Yuuya, Watanabe Daisuke, Yilgin Resul, Sakuma Akimasa, Ando Yasuo, Kubota Hitoshi

    Journal of the Japan Society of Powder and Powder Metallurgy 55 (2) 109-115 2008

    Publisher: Japan Society of Powder and Powder Metallurgy

    DOI: 10.2497/jjspm.55.109  

    ISSN: 0532-8799

    eISSN: 1880-9014

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    History about the research of magnetoresistance effect was reviewed. Also, we looked back on the research trends in the past when both giant magnetoresistance of Fe/Cr multi layered films and large tunnel magnetoresistance at room temperature were found.<BR>Special emphasis was placed on the recent developments of huge TMR ratio for both MgO barrier tunnel junctions and Heusler alloy electrode tunnel junctions which contribute further to the development of spinelectronic research fields. Principle and importance of spin-transfer torque were also explained.

  225. Grain-size effects on the formation of deformation twins in AZ31 Magnisium alloys

    ANDO Daisuke, KOIKE Junichi

    113 253-254 2007/10/10

    ISSN: 1882-6083

  226. Damping parameter of free layer material in MRAM measured by using ferromagnetic resonance

    ANDO Y., OOGANE M., WATANABE D., WATANABE M., YILGIN R., YAKATA S., MIYAZAKI T.

    153 7-14 2007/02/27

    ISSN: 1340-7562

  227. AZ31マグネシウム合金における結晶粒径と変形・破壊挙動の関係

    安藤大輔, 安藤大輔, 小池淳一

    日本金属学会講演概要 141st 2007

    ISSN: 1342-5730

  228. AZ31マグネシウム合金の破壊源としての二重双晶の形成過程

    安藤大輔, 佐藤優典, 小池淳一

    日本金属学会講演概要 140th 2007

    ISSN: 1342-5730

  229. マグネシウム合金における底面すべりと{10<span style=text-decoration:overline>1</span>2}変形双晶の関係

    佐藤優典, 安藤大輔, 小池淳一

    日本金属学会講演概要 140th 2007

    ISSN: 1342-5730

  230. マグネシウム合金の転位すべり・変形双晶に着目した変形機構の粒径依存性

    小池淳一, 安藤大輔, 佐藤優典

    日本金属学会講演概要 141st 2007

    ISSN: 1342-5730

  231. Fabrication of small ferromagnetic tunnel junction with coplanar wave guide

    Aoki T., Watanabe D., Daibou T., Ando Y., Oogane M., Miyazaki T.

    Journal of the Magnetics Society of Japan 31 (2) 94-97 2007

    Publisher: The Magnetics Society of Japan

    DOI: 10.3379/jmsjmag.31.94   10.3379/msjmag.32.355_references_DOI_Gfdrwj5xbK5YFKHYWWhdTBlC51Q  

    ISSN: 0285-0192

    eISSN: 1880-4004

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    Investigation of current induced magnetization switching properties in nanosecond regime in ferromagnetic tunnel junctions is increasing its necessity for realization of fast operating magnetic random access memory (MRAM). In this work, appropriate electrode structures for such a measurement were investigated. The electrode structure was designed as a typical coplanar waveguide with 50Ω characteristic impedance (structure A). Although the buffer layer thickness and the distance between the signal line and the ground line were altered, the large frequency dependenceof the insertion loss was not improved. The revised structure (structure B) with small cross section area between the signal line and the ground line showed very flat transmission properties over 20 GHz. Consequently, submicron sized Ta/FeNi/IrMn/CoFe/Ru/CoFeB/MgO/CoFeB/Ta/Ru ferromagnetic tunnel junctions with the electrodes of structure Bwere fabricated. The tunnel magnetoresistance ratio was 108 % after annealing at 250 °C.

  232. AZ31マグネシウム合金における変形誘起表面起伏と変形双晶の関係

    安藤大輔, 小池淳一

    日本金属学会講演概要 139th 2006

    ISSN: 1342-5730

  233. Fabrication of Small Magnetic Tunnel Junctions Using a Focused Ion Beam

    Watanabe D., Kubota H., Ando Y., Miyazaki T.

    Journal of the Magnetics Society of Japan 28 (4) 569-572 2004

    Publisher: The Magnetics Society of Japan

    DOI: 10.3379/jmsjmag.28.569  

    ISSN: 0285-0192

    eISSN: 1880-4004

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    A process for fabricating small magnetic tunnel junctions (MTJs) by using focused ion beam (FIB)-assisted chemical vapor deposition was investigated. Deposited tungsten was used as an electrode, and deposited carbon was used as a mask. MTJs with a junction area of 3 × 3 μm2 showed a TMR ratio of about 30 % at room temperature.

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Presentations 16

  1. Age hardening effect and Superelasticity of Martensitic transformable Mg-Sc based alloys Invited

    The 10th Pacific Rim International Conference on Advanced Materials and Processing 2019/08/20

  2. Superelasticity of Martensitic transformable Mg-Sc based alloys Invited

    D. Ando, K. Yamagishi, Y. Sutou

    The Future of Materials Engineering - Dramatic Innovation to the next 100 years 2019/06/25

  3. Resistive Switching Behavior of Undoped Hematite Film with Low Resistivity International-presentation

    Y. OGAWA, Y. SUTOU, D. ANDO, J. KOIKE

    CIMTEC2014 2014/06/15

  4. The electrical properties of binary Fe-O films deposited under various pxygen flow rate

    Y. Ogawa, Y. Sutou, D. Ando, J. Koike

    応用物理学会 2014/03/17

  5. A new model of ductility enhancement in Mg with small amounts of Y by grain subdivision International-presentation

    Daisuke Ando, Yuji Sutou, Junichi Koike

    THERMEC' 2013 2013/12/02

  6. Revolution of silicon solar cells by switching metal electrodes from silver to copper International-presentation

    H. T. Hai, J. S. Kim, S. Tanabe, Y. Sutou, J. Koike

    PT-BEMS 2013 (2013 JAPAN-TAIWAN SYMPOSIUM ON POLYSCALE TECHNOLOGIES FOR BIOMEDICAL ENGINEERING AND ENVIRONMENTAL SCIENCES 2013) 2013/09/07

  7. 銅ペースト配線の開発-太陽電池低コスト化の基幹部材-

    Daisuke Ando, Hoang Tri Hai, Junichi Koike

    材料科学的アプローチによる太陽電池研究の最前線 2012/10/12

  8. The Rolls of Deformation Twinning in Basal Textured AZ31 Mg Alloy International-presentation

    D. Ando, J. Kolile

    NIMS conference 2012 2012/06/04

  9. Mg合金の変形双晶形成要因と双晶界面構造解析

    安藤 大輔, 小池 淳一

    第44回高性能Mg合金創成加工研究会 2012/01/20

  10. Mgにおける局所変形量に及ぼす変形双晶の影響

    安藤 大輔, 小池 淳一

    2011年度 材料モデリング分科会 第三回分科会 2011/11/25

  11. Plastic Anisotropy and Deformation Twinning in Magnesium Alloys International-presentation

    J. Koike, D.Ando

    International Symp. of Physics of Materials 12 2011/09/04

  12. Mg合金の変形と破壊に関する基礎検討

    小池 淳一, 安藤 大輔, 藤山 直人, 須藤 祐司

    第19回素材工学研究懇談会 2010/11/17

  13. マグネシウム合金における変形双晶の重要性

    小池 淳一, 安藤 大輔

    軽金属学会秋季(第115回)大会 2008/11/15

  14. マグネシウム合金の変形双晶と破壊機構

    安藤 大輔, 小池 淳一

    第4回軽金属学会Mg研究会 2008/07/18

  15. Deformation mechanisms of magnesium alloys at ambient temperature International-presentation

    小池 淳一, 安藤 大輔, 藤山 直人

    NIMS Week 2008/07/16

  16. マグネシウム合金の変形機構における双晶の役割

    小池 淳一, 安藤 大輔, 佐藤 優典, 宮村 剛夫

    2007年度軽金属東北支部会セミナー 2008/02/01

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Industrial Property Rights 18

  1. 太陽電池用保護ガラスおよびその製造方法

    小池 淳一, 須藤 祐司, 安藤 大輔, 和田 真, 白澤 勝彦

    特許第6619139号

    Property Type: Patent

  2. 太陽電池モジュールおよびその製造方法

    小池 淳一, 須藤 祐司, 安藤 大輔, 和田 真

    特許第6548896号

    Property Type: Patent

  3. 超弾性効果及び/又は形状記憶効果を発現するマグネシウム合金

    安藤 大輔, 須藤 祐司, 小川 由希子, 小池 淳一

    特許第6497686号

    Property Type: Patent

  4. 電子部品およびその製造方法

    小池 淳一, 安藤 大輔, 須藤 祐司

    特許第5972317号

    Property Type: Patent

  5. 銅ペーストの焼成方法

    小池 淳一, 須藤 祐司, 安藤 大輔

    特許第5766336号

    Property Type: Patent

  6. 太陽電池及びその製造方法

    小池 淳一, 須藤 祐司, 安藤 大輔, ホアン チ ハイ

    特許第5735093号

    Property Type: Patent

  7. 太陽電池及び、この太陽電池における酸化物層の形成方法、積層酸化物層の形成方法

    小池 淳一, ホアン チ ハイ, 安藤 大輔

    特許第5374779号

    Property Type: Patent

  8. 超弾性効果及び/又は形状記憶効果を発現するマグネシウム合金

    安藤 大輔, 須藤 祐司, 小川 由希子, 小池 淳一

    Property Type: Patent

  9. 太陽電池装置及びその製造方法

    小池 淳一, 和田 真, 須藤 祐司, 安藤 大輔

    Property Type: Patent

  10. 水素発生合金、実験教材、マグネシウム電池用負極材、及び発電用水素発生剤

    安藤 大輔, 須藤 祐司, 内山 智元

    Property Type: Patent

  11. 高比抵抗合金および抵抗器

    須藤 祐司, 監物 幸翼, 安藤 大輔, 石田 清仁

    Property Type: Patent

  12. 太陽電池モジュールおよびその製造方法

    小池 淳一, 須藤 祐司, 安藤 大輔, 和田 真

    Property Type: Patent

  13. 太陽電池用保護ガラスおよびその製造方法

    小池 淳一, 須藤 祐司, 安藤 大輔, 和田 真, 白澤 勝彦

    Property Type: Patent

  14. 電子部品およびその製造方法

    小池 淳一, 安藤 大輔, 須藤 祐司

    Property Type: Patent

  15. 電子部品およびその製造方法

    小池 淳一, 安藤 大輔, 須藤 祐司

    Property Type: Patent

  16. 銅ペーストの焼成方法

    小池 淳一, 須藤 祐司, 安藤 大輔

    Property Type: Patent

  17. 太陽電池及びその製造方法

    小池 淳一, 須藤 祐司, 安藤 大輔, ホアン チ ハイ

    Property Type: Patent

  18. 太陽電池及び、この太陽電池における酸化物層の形成方法、積層酸化物層の形成方法

    小池 淳一, ホアン チ ハイ, 安藤 大輔

    Property Type: Patent

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Research Projects 25

  1. (Mg,Sc)規則BCC相を利用したMg合金の高強度化 Competitive

    System: Grant-in-Aid for Scientific Research

    2013/04 - Present

  2. 高性能・低価格太陽電池を実現するためのCuペーストの開発 Competitive

    System: The Other Research Programs

    2012/04 - Present

  3. 超弾性・形状記憶能を有するMg基合金の開発 Competitive

    2011/04 - Present

  4. プレス変形可能なマグネシウム合金の開発 Competitive

    System: Cooperative Research

    2010/04 - Present

  5. マグネシウム合金の変形・破壊挙動の解明 Competitive

    System: Grant-in-Aid for Scientific Research

    2005/04 - Present

  6. Eutectic Engineering of vibration-absorbing Al heat-resistant casting alloys

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2023/04/01 - 2027/03/31

  7. Eutectic Engineering of vibration-absorbing Al heat-resistant casting alloys

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2023/04/01 - 2027/03/31

  8. Realization of tough ceramics with photoplastic effect induced by defect engineering

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2022/06/30 - 2024/03/31

  9. kink strengthening with three-dimensional shaped kinks via torsional extrusion

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tohoku University

    2021/04/01 - 2023/03/31

  10. 生体吸収性Mg-Sc合金の腐食環境下での機械特性変化と産業化に向けたワイヤーと薄肉管材の製法確立

    安藤 大輔

    Offer Organization: 科学技術振興機構

    System: 産学が連携した研究開発成果の展開 研究成果展開事業 研究成果最適展開支援プログラム(A-STEP) 産学共同(育成型)

    Institution: 東北大学大学院

    2020 - 2022

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    A-STEP機能検証フェーズ(2019年度)にて申請者が取り組んできたMg-Sc合金は、医学界から長年望まれている、「生体分解性」と「超弾性特性」を併せ持つ唯一の材料と成り得ることが分かった。しかし、インプラント製品として実用化するには、生体分解に伴う機械特性の劣化挙動まで調べる必要がある。また、ステント基材となる線材(φ0.7mm)や管材(管肉厚200μm)へと塑性加工する手法の確立が不可欠である。そこで、本課題ではMg-Sc合金の生体腐食下での機械特性劣化挙動の調査、従来の塑性加工プロセスの最適化、ニアネットシェイプ法への挑戦による製造プロセスの産業化指針確立を目標とする。

  11. Development of Widmanstatten type heat resistant Magnesium alloys with over 400 MPa for automobile engine cylinder

    Ando Daisuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2019/06/28 - 2021/03/31

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    In this study, an automotive engine cylinder with improved fuel efficiency comparable to a 1000 kgf reduction in vehicle weight was achieved by creating a 400 MPa-grade Wiedmannstetten-type Mg heat-resistant alloy. At the same time, the mechanism of high-temperature strength improvement by using phase transformation, which is the first attempt in Mg-based alloys, was investigated. As a result, an alloy with good ductility at 300°C and a maximum tensile strength of 430 MPa was created, and by adding elements, an alloy that can withstand prolonged heat treatment at 300°C was developed.

  12. Investigation of important factor in kink strengthening to Millefeuille structure using high temperature torsion process

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tohoku University

    2019/04/01 - 2021/03/31

  13. High-strength and high-ductility BCC Mg alloys with synergistic effect of TRIP and TWIP

    Ando Daisuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2018/04/01 - 2021/03/31

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    Binary Mg-Sc alloys and ternary Mg-Sc-X alloys were investigated using prediction of the transition of phase stability and main deformation mechanism at the d-orbital level method. However, we were not able to create a deformation twinning dominant alloy. On the other hand, we have succeeded in creating binary Mg-Sc alloys and ternary Mg-Sc-X alloys that exhibit the TRIP effect due to deformation-induced martensitic transformation. In particular, the alloy with RE (rare earth) element selected as X has the highest strength and ductility balance compared with any of the previously reported Mg-based alloys.

  14. 自己拡張型生体吸収性Mg-Sc基合金材の組織制御による超弾性回復ひずみ最大化

    安藤 大輔

    Offer Organization: 科学技術振興機構

    System: 産学が連携した研究開発成果の展開 研究成果展開事業 研究成果最適展開支援プログラム(A-STEP) 機能検証フェーズ 試験研究タイプ

    Institution: 東北大学

    2019 - 2020

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    自己拡張型生体吸収性の金属製ステント開発のため、Mg-Sc基形状記憶合金の組成制御、集合組織制御により、室温での超弾性回復ひずみ量を現状3%から計算理論値6.9%に向けて最大化させることを目的とする。

  15. Biodegradation rate controllable stent in Super-elastic Mg based alloys with self passivization oxide layer

    Ando Daisuke, KOIKE Junichi, SUTOU Yuji

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Tohoku University

    2017/06/30 - 2019/03/31

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    The purpose of this research are to develop novel Mg-Sc alloys with super-elasticity at ambient temperature and body temperature and to investigate the dissolution rate of various Mg-Sc alloys with Sc2O3 self-passivation oxide layer in 5% NaCl solution without convection. The study revealed that novel Mg-Sc alloy shows 3% of super-elastic strain and the dissolution rate of Mg-Sc alloys become slower with increasing Sc content, furthermore, the dissolution rate of α or β single phase is slightly slower than that of α+β dual phase.

  16. Formation behavior and mechanism of advanced LSI interconnections by dynamic nano-reflow method

    Koike Junichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2015/04/01 - 2018/03/31

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    Performance of LSI devices has been continuously improved by shrinking device components. Recent devices encounter a problem of forming very narrow multilayer interconnections. In this project, we found the conditions to form 15 nm wide interconnections (M2 lines and vias) by a dynamic nano-reflow method of depositing Cu alloy at elevated temperatures. With this method, an alloying element was segregated at Cu/insulator interface and enhanced the wettability of the deposited metals. We also found that controlling parameters are surface curvature gradient in the initial deposition stage and thermal stress gradient during heating and cooling. The effects of each driving force are nearly the same magnitude. Based on the obtained results, we could simulate reflow behavior.

  17. A study of contact resistance between phase change material and electrode for next generation PCRAM

    Sutou Yuji, KOIKE Junichi, ANDO Daisuke, KOBAYASHI Keisuke, SONG Yun-Heub, SHINDO Satoshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2015/04/01 - 2018/03/31

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    With the scaling down of PCRAM cells, contact resistance between phase change material (PCM) and an electrode becomes a dominant factor in determining the memory cell resistance. In this study, we investigated the contact resistivity of PCM to a metal electrode. Then, we discussed the effect of the contact resistivity on the performance of the memory cell. We found that an amorphous Cu2GeTe3 (CGT)/W contact shows schottky conduction, i.e., a CGT/W is dominated by interface conduction. Moreover, we found new PCM, Cr2Ge2Te6 (CrGT) with a high thermal stability in amorphous state. The CrGT showed inverse resistance change upon phase change (Ramo<Rcry). Although the resistivity change of the CrGT was only one order of magnitude, the contact resistivity change was found to reach two orders of magnitude upon phase change. I was also found that the CrGT memory cell achieves more than an 85% reduction in total operation energy compared with a conventional GST memory cell.

  18. Mg-Sc based alloy with high strength and functionality using BCC/HCP phase transformation

    Ando Daisuke, KOIKE Junichi, SUTOU Yuji, OGAWA Yukiko, TAKEUCHI Yuta

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A)

    Category: Grant-in-Aid for Young Scientists (A)

    Institution: Tohoku University

    2015/04/01 - 2018/03/31

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    I focused novel Mg-Sc alloys with high strength and functionality using phase transformation. This study mainly shows Mg-Sc alloy exhibits Martensitic transformation from BCC phase to orthorhombic phase and the transformation produces super-elasticity and shape memory effects for the first time in the world. This result disproved Mg alloys can not exhibit Martensitic transformation because the hardness of Magnesium is too low. Furthermore, it indicates some possibility to use the Mg-Sc alloy for aerospace and medical application such as self expanding frames of solar panel and biodegradable implant material.

  19. Development of multi-level PCRAM showing four-resistance-level

    SUTOU YUJI, ANDO Daisuke, KOIKE Junichi, SAITO Yuta, SHINDO Satoshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2015/04/01 - 2017/03/31

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    Phase change random access memory called PCRAM has attracted much attention as next generation nonvolatile memory because of its simple operation principle and production cost. PCRAM is operated by way of Joule heating to induce phase change between high resistance reset amorphous state and low resistance set crystalline state of phase change material. In this study, we proposed multi-level PCRAM showing four-resistance-level which can store 2 bit data. We investigated the composition dependence of Cu-Ge-Te film showing two-step crystallization process. Based on the results, we found that 23.4Cu-28.8Ge-47.8Te(CuGT)/GeTe(GT) stack-layered memory cell can exhibits four-resistance-level, i.e., [amo.CuGT+amo.GT], [amo.CuGT*cry.GT], [cry1.CuGT+cry.GT] and [cry2.CuGT+cry.GT]. These results indicate that Cu-Ge-Te/GeTe layered structure is expected to be multi-level PCRAM.

  20. Damping property of Mg-Sc alloys using a hybrid model of dislocation and twin

    ANDO DAISUKE, KOIKE JUNICHI, SUTO YUJI

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2015/04/01 - 2017/03/31

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    We proposed a novel damping material with hybrid model of dislocation type and twin type using Mg-Sc alloys which can do Martensitic transformation. In this research period, we tried to clear the composition dependence on Martensitic transformation, the damping properties of HCP and BCC phase, and the optimized microstructure with good damping in Mg-Sc binary alloy. The Martensitic temperature strongly depends on the Sc composition. Furthermore, the martensitic temperature is ambient temperature in Mg-18.6at%Sc. However, the bcc phase is too soft to occur Martensitic transformation without dislocation. Therefore, we would like to propose third element addition for solid solute strengthening of BCC phase. The BCC phase can transform to HCP without variant selection. Therefore, we can make single hcp alloy with random crystal orientation.

  21. Fast phase change speed induced by surface oxidation of phase change material

    SUTOU Yuji, KOIKE Junichi, ANDO Daisuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2013/04/01 - 2015/03/31

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    Phase change random access memory (PCRAM) has attracted much attention as a new class of non-volatile memory because of its low production cost and high scalability. Now, Ge-Sb-Te material is used for PCRAM because of its fast phase change speed and good repeatability. However, the Ge-Sb-Te shows low crystallization temperature (Tc) and consequently insufficient high temperature data retention. Meanwhile, a material with a high Tc shows a slow phase change speed. Therefore, an idea to realize a material with high Tc and fast crystallization speed is desired. In this study, we investigated the effect of preferential surface oxidation on crystallization speed in GeTe-Si phase change material. It was found that the crystallization starting time of the surface-oxidized film by O2 plasma-treatment was about 20% faster than that of a non-oxidized film. This fast crystal nucleation was suggested to be due to the formation of inhomogeneous nucleation sites at the film surface.

  22. High strength Mg-Sc alloy using Ordered BCC phase

    ANDO Daisuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2013/04/01 - 2015/03/31

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    In this study, the mechanical properties, especially Vickers hardeness, were investitagted in various Mg-Sc alloys with hcp single phase, bcc single phase and hcp+bcc dual phase. These Vickers hardeness were 115Hv for hcp, 100Hv for bcc. After aging treatment at 473 K for 18 ks in Mg-16.8at%Sc, the maximum Vickers hardness was 231.5Hv which is highest value in Mg based alloy expected for metallic glass. The hardening mechanism was discussed according to TEM, SEM/EBSD and XRD results. This significant age-hardening could be explained by the solid-solution hardening of Sc in Mg and the grain refinement hardening by the nano-size hcp precipitates.

  23. Principles for the development of a diffusion barrier layer to overcome the process limitations of multi-layer interconnects for semiconductor devices

    KOIKE Junichi, SUTOU Yuji, NEISHI Koji, ANDO Daisuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tohoku University

    2010/04/01 - 2015/03/31

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    Multilayer interconnection for semiconductors requires the decrease of a barrier layer thickness as thin as possible. This research has focused on the self-formation of the barrier layer and was aimed at understanding the formation mechanism so as to go beyond process limitation with novel materials and processes. The formation mechanism was found to be electric-field induced diffusion. The field strength was dependent on alloying elements, which led to the difference in the formation mechanism. In order to provide solutions to futuristic narrow lines, we developed a chemical vapor deposition method to form an ultrathin barrier layer and a sputter reflow method to fill very narrow lines with copper alloys.

  24. Textural control of BCC/HCP two phase Magnesium alloy with the β-Sc phase

    ANDO Daisuke

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up

    Category: Grant-in-Aid for Research Activity Start-up

    Institution: Tohoku University

    2011 - 2011

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    Conventional progress of Mg alloys is the solution or precipitation hardening in HCP Mg phase. So, in this work, I suggested the new two-phase Mg alloy withβ-Sc phase. I reappraised the phase diagram by diffusion couples and TEM observation. And I found that β-Sc phase exists in the lower Sc content at 15at%Sc. The fine two-phase texture is obtained in Mg-22at%Sc by casting. This alloy has more excellent in balance of strength-ductility than conventional Mg alloys.

  25. FIB/TEM断面観察による定量的破壊評価法を用いたMg合金の疲労破壊機構の解明 Competitive

    System: Grant-in-Aid for Scientific Research

    2010 - 2011

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