-
Carbon isotopic composition of solid carbon and C–H–O fluid produced through the decomposition of stearic acid under HP-HT condition
Hideaki Kawamura, Hiroaki Ohfuji, Madhusoodhan Satish-Kumar, Sasidharan Kiran, Akio Suzuki
High Pressure Research 44 (1) 38-52 2024
Publisher:
Informa UK Limited
DOI：
10.1080/08957959.2023.2297680
ISSN：
0895-7959
eISSN：
1477-2299
-
Mineralogical study on zeolites in gastropod fossils in Miocene sediments in Minamisoma, Fukushima, Japan
Atsushi ISHIHARA, Hiroaki OHFUJI
Journal of Mineralogical and Petrological Sciences 118 (1) 1-13 2023
DOI：
10.2465/jmps.230327
ISSN：
1345-6296
eISSN：
1349-3825
-
New approach to obtain the correct chemical compositions by absorption correction using analytical transmission electron microscopy
Kiyoshi Fujino, Naotaka Tomioka, Hiroaki Ohfuji
Journal of Mineralogical and Petrological Sciences 118 (1) 2023
DOI：
10.2465/JMPS.221017
ISSN：
1345-6296
eISSN：
1349-3825
-
Diamond formation from methane hydrate under the internal conditions of giant icy planets
Hirokazu Kadobayashi, Satoka Ohnishi, Hiroaki Ohfuji, Yoshitaka Yamamoto, Michihiro Muraoka, Suguru Yoshida, Naohisa Hirao, Saori Kawaguchi-Imada, Hisako Hirai
Scientific Reports 11 (1) 2021/12
Publisher:
Springer Science and Business Media LLC
DOI：
10.1038/s41598-021-87638-5
eISSN：
2045-2322
-
High-pressure synthesis of TaN compacts with high hardness and thermal stability
Leihao Feng, Qiwei Hu, Li Lei, Lei Qi, Leilei Zhang, Meifang Pu, Zili kou, Fang Peng, Duanwei He, Yohei Kojima, Hiroaki Ohfuji, Tetsuo Irifune
Ceramics International 47 (21) 30039-30042 2021/11/01
Publisher:
Elsevier Ltd
DOI：
10.1016/j.ceramint.2021.07.179
ISSN：
0272-8842
-
Elucidation of impact event recorded in the lherzolitic shergottite NWA 7397
Masashi Yoshida, Masaaki Miyahara, Hiroki Suga, Akira Yamaguchi, Naotaka Tomioka, Takeshi Sakai, Hiroaki Ohfuji, Fumiya Maeda, Itaru Ohira, Eiji Ohtani, Seiji Kamada, Takuji Ohigashi, Yuichi Inagaki, Yu Kodama, Naohisa Hirao
Meteoritics & Planetary Science 2021/08/28
Publisher:
Wiley
DOI：
10.1111/maps.13735
ISSN：
1086-9379
eISSN：
1945-5100
-
Pressure-induced disordering of site occupation in iron-nickel nitrides
Binbin Wu, Li Lei, Feng Zhang, Qiqi Tang, Shan Liu, Meifang Pu, Duanwei He, Yuanhua Xia, Leiming Fang, Hiroaki Ohfuji, Tetsuo Irifune
Matter and Radiation at Extremes 6 (3) 2021/05/01
Publisher:
American Institute of Physics Inc.
DOI：
10.1063/5.0040041
ISSN：
2468-080X 2468-2047
-
Plastic Deformation and Strengthening Mechanisms of Nanopolycrystalline Diamond
Yanbin Wang, Feng Shi, Julien Gasc, Hiroaki Ohfuji, Bin Wen, Tony Yu, Timothy Officer, Norimasa Nishiyama, Toru Shinmei, Tetsuo Irifune
ACS NANO 15 (5) 8283-8294 2021/05
DOI：
10.1021/acsnano.0c08737
ISSN：
1936-0851
eISSN：
1936-086X
-
The effect of interstitial-site nitrogen on structural, elastic, and magnetic properties of face-center cubic Co
Binbin Wu, Feng Zhang, Qiwei Hu, Qiqi Tang, Shan Liu, Xiaojun Xiang, Yuanhua Xia, Leiming Fang, Hiroaki Ohfuji, Tetsuo Irifune, Li Lei
Journal of Applied Physics 129 (10) 2021/03/14
Publisher:
American Institute of Physics Inc.
DOI：
10.1063/5.0037917
ISSN：
1089-7550 0021-8979
-
Formation of Polycrystalline Graphite Aggregates in High-Pressure Metamorphic Rocks from the Kokchetav Massif, Northern Kazkhstan
D. S. Mikhailenko, A. V. Korsakov, Hiroaki Ohfuji, O. V. Rezvukhina, I. V. Pekov
Doklady Earth Sciences 497 (1) 227-231 2021/03/01
Publisher:
Pleiades journals
DOI：
10.1134/S1028334X21030089
ISSN：
1531-8354 1028-334X
-
Development of Toughened, Fine Grained, Recrystallized W-1.1%TiC
Shunsuke Makimura, Hiroaki Kurishita, Koichi Niikura, Hun Chea Jung, Hiroyuki Ishizaki, Atsuro Kimura, Masahiro Onoi, Yutaka Nagasawa, Tatsuaki Sakamoto, Hiroaki Ohfuji
Materials Science Forum 1024 103-109 2021/03
Publisher:
Trans Tech Publications, Ltd.
DOI：
10.4028/www.scientific.net/msf.1024.103
eISSN：
1662-9752
-
Sn-V centers in diamond activated by ultra high pressure and high temperature treatment
Rei Fukuta, Yohei Murakami, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune, Fumitaro Ishikawa
Japanese Journal of Applied Physics 60 (3) 035501-035501 2021/03/01
Publisher:
IOP Publishing
DOI：
10.35848/1347-4065/abdc31
ISSN：
0021-4922
eISSN：
1347-4065
-
Silicate Inclusions in Metamorphic Diamonds from the Ultra-High Pressure Kokchetav Complex (Kazakhstan)
D. S. Mikhailenko, A. V. Korsakov, Hiroaki Ohfuji, N. V. Sobolev
Doklady Earth Sciences 496 (2) 142-145 2021/02/01
Publisher:
Pleiades journals
DOI：
10.1134/S1028334X21020112
ISSN：
1531-8354 1028-334X
-
Synthesis of transparent polycrystalline jadeite under high pressure and temperature
Keisuke Mitsu, Tetsuo Irifune, Hiroaki Ohfuji, Akihiro Yamada
Journal of Mineralogical and Petrological Sciences 116 (4) 203-210 2021
Publisher:
Tohoku University
DOI：
10.2465/JMPS.210319
ISSN：
1349-3825 1345-6296
-
Elasticity of nanocrystalline kyanite at high pressure and temperature from ultrasonic and synchrotron X-ray techniques
Nico A. Gaida, Steeve Gréaux, Yoshio Kono, Hiroaki Ohfuji, Hideharu Kuwahara, Norimasa Nishiyama, Oliver Beermann, Takuya Sasaki, Ken Niwa, Masashi Hasegawa
Journal of the American Ceramic Society 104 (1) 635-644 2021/01
DOI：
10.1111/jace.17464
ISSN：
0002-7820
eISSN：
1551-2916
-
Effect of ammonia on methane hydrate stability under high-pressure and high-temperature conditions
Hirokazu Kadobayashi, Hisako Hirai, Hiroaki Ohfuji, Hideaki Kawamura, Michihiro Muraoka, Suguru Yoshida, Yoshitaka Yamamoto
Journal of Physical Chemistry A 124 (51) 10890-10896 2020/12/24
DOI：
10.1021/acs.jpca.0c09652
ISSN：
1089-5639
eISSN：
1520-5215
-
A novel long-period phase in Mg<inf>97</inf>Yb<inf>2</inf>Cu<inf>1</inf> alloy
Peer-reviewed
Teruki Tsuchiya, Masahiro Fukuda, Hiroaki Ohfuji, Michiaki Yamasaki, Yoshihito Kawamura, Masafumi Matsushita
Journal of Alloys and Compounds 844 2020/12/05
DOI：
10.1016/j.jallcom.2020.155972
ISSN：
0925-8388
-
Systematic investigations of high-pressure polymorphs in shocked ordinary chondrites
Masaaki Miyahara, Akira Yamaguchi, Masato Saitoh, Kanta Fukimoto, Takeshi Sakai, Hiroaki Ohfuji, Naotaka Tomioka, Yu Kodama, Eiji Ohtani
Meteoritics and Planetary Science 55 (12) 2619-2651 2020/12
DOI：
10.1111/maps.13608
ISSN：
1086-9379
-
Sequential in situ Raman spectroscopy for observing dissociation behavior of filled-ice Ih of methane hydrate at high pressure
Hirokazu Kadobayashi, Hisako Hirai, Keita Suzuki, Hiroaki Ohfuji, Michihiro Muraoka, Suguru Yoshida, Yoshitaka Yamamoto
Journal of Raman Spectroscopy 51 (12) 2536-2542 2020/12
DOI：
10.1002/jrs.6012
ISSN：
0377-0486
eISSN：
1097-4555
-
Microdiamond in a low-grade metapelite from a Cretaceous subduction complex, western Kyushu, Japan
Peer-reviewed
Tadao Nishiyama, Hiroaki Ohfuji, Kousuke Fukuba, Masami Terauchi, Ukyo Nishi, Kazuki Harada, Kouhei Unoki, Yousuke Moribe, Akira Yoshiasa, Satoko Ishimaru, Yasushi Mori, Miki Shigeno, Shoji Arai
Scientific Reports 10 (1) 2020/12/01
DOI：
10.1038/s41598-020-68599-7
eISSN：
2045-2322
-
Dispersing InP Nanocrystals in Nano-polycrystalline Diamond during the Direct Conversion from Graphite
Rei Fukuta, Naoya Yamamoto, Yohei Murakami, Fumitaro Ishikawa, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune
Materials Transactions 61 (9) 1707-1710 2020/09/01
DOI：
10.2320/matertrans.MT-M2020124
ISSN：
1345-9678
-
High-pressure phase transition of methane hydrate in water-methane-ammonia system
Hirokazu Kadobayashi, Hisako Hirai, Kenji MacHita, Hiroaki Ohfuji, Michihiro Muraoka, Suguru Yoshida, Yoshitaka Yamamoto
Journal of Physics: Conference Series 1609 (1) 2020/08/17
DOI：
10.1088/1742-6596/1609/1/012006
ISSN：
1742-6588
eISSN：
1742-6596
-
Stability of methane hydrate at high-pressure and high-temperature of up to 40 GPa and 573 K
Hirokazu Kadobayashi, Hiroaki Ohfuji, Hisako Hirai, Michika Ohtake, Yoshitaka Yamamoto
Journal of Physics: Conference Series 1609 (1) 2020/08/17
DOI：
10.1088/1742-6596/1609/1/012007
ISSN：
1742-6588
eISSN：
1742-6596
-
Towards the investigation of ternary compound in the Ti-Al-Zr-O system: Effect of oxygen fugacity on phase formation
Peer-reviewed
T. B. Bekker, K. D. Litasov, A. F. Shatskiy, N. E. Sagatov, P. G. Krinitsin, S. P. Krasheninnikov, I. V. Podborodnikov, S. V. Rashchenko, A. V. Davydov, H. Ohfuji
Journal of the European Ceramic Society 40 (10) 3663-3672 2020/08
DOI：
10.1016/j.jeurceramsoc.2020.03.068
ISSN：
0955-2219
eISSN：
1873-619X
-
Serpentinite enigma of the Rakhabdev lineament in western India: Origin, deformation characterization and tectonic implications
Peer-reviewed
Dyuti Prakash Sarkar, Ando Jun-Ichi, Kaushik Das, Anupam Chattopadhyay, Gautam Ghosh, Kenji Shimizu, Hiroaki Ohfuji
Journal of Mineralogical and Petrological Sciences 115 (2) 216-226 2020/04
DOI：
10.2465/jmps.191016
ISSN：
1345-6296
eISSN：
1349-3825
-
Reply to the comment on “comparison of enigmatic diamonds from the Tolbachik arc volcano (Kamchatka) and Tibetan ophiolites: Assessing the role of contamination by synthetic materials” by Litasov et al. (2019) (Gondwana research, 75, 16–27) by Yang et al.
Peer-reviewed
K. D. Litasov, T. B. Bekker, H. Kagi, H. Ohfuji
Gondwana Research 79 304-307 2020/03
DOI：
10.1016/j.gr.2019.09.011
ISSN：
1342-937X
-
Structural evolution of methane hydrate under pressures up to 134 GPa
Hirokazu Kadobayashi, Hisako Hirai, Hiroaki Ohfuji, Michika Ohtake, Michihiro Muraoka, Suguru Yoshida, Yoshitaka Yamamoto
Journal of Chemical Physics 152 (19) 2020
Publisher:
American Institute of Physics Inc.
DOI：
10.1063/5.0007511
ISSN：
1089-7690 0021-9606
-
Back-transformation mechanisms of ringwoodite and majorite in an ordinary chondrite
Peer-reviewed
Kanta Fukimoto, Masaaki Miyahara, Takeshi Sakai, Hiroaki Ohfuji, Naotaka Tomioka, Yu Kodama, Eiji Ohtani, Akira Yamaguchi
Meteoritics and Planetary Science 2020
DOI：
10.1111/maps.13543
ISSN：
1086-9379
-
Nano-polycrystalline diamond synthesized through the decomposition of stearic acid
Peer-reviewed
Hideaki Kawamura, Hiroaki Ohfuji
High Pressure Research 2020
DOI：
10.1080/08957959.2019.1708910
ISSN：
0895-7959
eISSN：
1477-2299
-
Conical support for double-stage diamond anvil apparatus
Takeshi Sakai, Takehiko Yagi, Ryosuke Takeda, Toshiki Hamatani, Yuki Nakamoto, Hirokazu Kadobayashi, Hideto Mimori, Saori Kawaguchi, Naohisa Hirao, Keitaro Kuramochi, Naoki Ishimatsu, Takehiro Kunimoto, Hiroaki Ohfuji, Yasuo Ohishi, Tetsuo Irifune, Katsuya Shimizu
HIGH PRESSURE RESEARCH 40 (1) 12-21 2020/01
DOI：
10.1080/08957959.2019.1691190
ISSN：
0895-7959
eISSN：
1477-2299
-
Comparison of enigmatic diamonds from the Tolbachik arc volcano (Kamchatka)and Tibetan ophiolites: Assessing the role of contamination by synthetic materials
K. D. Litasov, H. Kagi, S. A. Voropaev, T. Hirata, H. Ohfuji, H. Ishibashi, Y. Makino, T. B. Bekker, V. S. Sevastyanov, V. P. Afanasiev, N. P. Pokhilenko
Gondwana Research 75 16-27 2019/11/01
DOI：
10.1016/j.gr.2019.04.007
ISSN：
1342-937X
-
The Ni–Ni<inf>2</inf>P phase diagram at 6 GPa with implication to meteorites and super-reduced terrestrial rocks
Konstantin D. Litasov, Anton F. Shatskiy, Daniil A. Minin, Konstantin E. Kuper, Hiroaki Ohfuji
High Pressure Research 39 561-578 2019/10/02
DOI：
10.1080/08957959.2019.1672677
ISSN：
0895-7959
-
Reaction between Forsterite and Nitrogen Fluid at High Pressure and High Temperature
Hiroyuki Kagi, Toshinori Kubo, Ayako Shinozaki, Taku Okada, Hiroaki Ohfuji, Aiko Nakao
Geochemistry International 57 956-963 2019/09/01
DOI：
10.1134/S0016702919090040
ISSN：
0016-7029
-
The Mg-carbonate–Fe interaction: Implication for the fate of subducted carbonates and formation of diamond in the lower mantle
Peer-reviewed
Naira S. Martirosyan, Konstantin D. Litasov, Sergey S. Lobanov, Alexander F. Goncharov, Anton Shatskiy, Hiroaki Ohfuji, Vitali Prakapenka
Geoscience Frontiers 10 (4) 1449-1458 2019/07
DOI：
10.1016/j.gsf.2018.10.003
ISSN：
1674-9871
-
A "coarse-grained" metabasite body newly found in the Sambagawa metamorphic rocks in Kumakogen Town, Ehime Prefecture, SW Japan
Peer-reviewed
Nakata, K, Kusuhashi, N, Saito, S, Ohfuji, H, Nara, M
The Journal of the Geological Society of Japan 125 (6) 447-452 2019/06
-
Ultrafine spherulite Mg alloy with high yield strength
Masafumi Matsushita, Kohtaro Masuda, Ryohei Waki, Hiroaki Ohfuji, Michiaki Yamasaki, Yoshihito Kawamura, Yuji Higo
Journal of Alloys and Compounds 784 1284-1289 2019/05/05
DOI：
10.1016/j.jallcom.2019.01.080
ISSN：
0925-8388
eISSN：
1873-4669
-
Origin of milky optical features in type IaB diamonds: Dislocations, nano-inclusions, and polycrystalline diamond
Tingting Gu, Hiroaki Ohfuji, Wuyi Wang
American Mineralogist 104 652-658 2019/05/01
DOI：
10.2138/am-2019-6699
ISSN：
0003-004X
-
Crystal chemistry of K-rich nepheline in nephelinite from Hamada, Shimane Prefecture, Japan
Maki Hamada, Masahide Akasaka, Hiroaki Ohfuji
Mineralogical Magazine 83 239-247 2019/04/01
DOI：
10.1180/mgm.2018.133
ISSN：
0026-461X
-
Microstructure and room and high temperature mechanical properties of ultrafine structured Al-5 wt%Y <inf>2</inf> O <inf>3</inf> and Al-5 wt%La <inf>2</inf> O <inf>3</inf> nanocomposites fabricated by mechanical alloying and hot pressing
Tatsuaki Sakamoto, Shota Kukeya, Hiroaki Ohfuji
Materials Science and Engineering A 748 428-433 2019/03/04
DOI：
10.1016/j.msea.2019.01.091
ISSN：
0921-5093
-
The Fe–Fe <inf>2</inf> P phase diagram at 6 GPa
Daniil A. Minin, Anton F. Shatskiy, Konstantin D. Litasov, Hiroaki Ohfuji
High Pressure Research 39 50-68 2019/01/02
DOI：
10.1080/08957959.2018.1562552
ISSN：
0895-7959
-
High-Pressure Synthesis of Novel Nano-Polycrystalline cBN and its Application to Ultra-Precision Cutting Tools
Peer-reviewed
Ichida Yoshio, Ohfuji Hiroaki, Irifune Tetsuo, Kunimoto Takehiro
Proceedings of JSPE Semestrial Meeting 2019 (0) 648-649 2019
Publisher:
The Japan Society for Precision Engineering
DOI：
10.11522/pscjspe.2019S.0_648
-
Fracture Characteristics of Novel Nano-Polycrystalline cBN Abrasive Grains
Peer-reviewed
Ichida Yoshio, Ohfuji Hiroaki, Irifune Tetsuo, Kunimoto Takehiro
Proceedings of JSPE Semestrial Meeting 2019 (0) 43-44 2019
Publisher:
The Japan Society for Precision Engineering
DOI：
10.11522/pscjspe.2019S.0_43
-
Synthesis of nano-polycrystalline diamond from glassy carbon at pressures up to 25 GPa
Tetsuo Irifune, Chiaki Ueda, Shohei Ohshita, Hiroaki Ohfuji, Takehiro Kunimoto, Toru Shinmei
High Pressure Research 2019
DOI：
10.1080/08957959.2019.1700981
ISSN：
0895-7959
eISSN：
1477-2299
-
Deep-ultraviolet near band-edge emissions from nano-polycrystalline diamond
Ryota Ishii, Rei Fukuta, Fumitaro Ishikawa, Masafumi Matsushita, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune, Mitsuru Funato, Yoichi Kawakami
High Pressure Research 40 (1) 140-147 2019/01/01
DOI：
10.1080/08957959.2019.1702658
ISSN：
0895-7959
eISSN：
1477-2299
-
Strength and plastic deformation of polycrystalline diamond composites
Yanbin Wang, Feng Shi, Hiroaki Ohfuji, Julien Gasc, Norimasa Nishiyama, Tony Yu, Timothy Officer, Toru Shinmei, Tetsuo Irifune
High Pressure Research 40 (1) 35-53 2019/01/01
DOI：
10.1080/08957959.2019.1695254
ISSN：
0895-7959
eISSN：
1477-2299
-
Pulsed laser irradiation as a process of conductive surface formation on nanopolycrystalline diamond
Rei Fukuta, Naoya Yamamoto, Fumitaro Ishikawa, Fumitaro Ishikawa, Masafumi Matsushita, Masafumi Matsushita, Tsuyoshi Yoshitake, Hiroshi Ikenoue, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune
Japanese Journal of Applied Physics 57 (11) 2018/11/01
DOI：
10.7567/JJAP.57.118004
ISSN：
0021-4922
eISSN：
1347-4065
-
Elemental composition and ultrafine structure of the skeleton in shell-bearing protists—A case study of phaeodarians and radiolarians
Yasuhide Nakamura, Izumi Iwata, Izumi Iwata, Rie S. Hori, Naomi Uchiyama, Akihiro Tuji, Masaki J. Fujita, Daiske Honda, Daiske Honda, Hiroaki Ohfuji
Journal of Structural Biology 204 (1) 45-51 2018/10/01
DOI：
10.1016/j.jsb.2018.06.008
ISSN：
1047-8477
eISSN：
1095-8657
-
New High-Pressure Forms of Al<inf>2</inf>SiO<inf>5</inf>
Y. Zhou, T. Irifune, T. Irifune, H. Ohfuji, T. Kuribayashi
Geophysical Research Letters 45 (16) 8167-8172 2018/08/28
Publisher:
American Geophysical Union (AGU)
DOI：
10.1029/2018GL078960
ISSN：
0094-8276
eISSN：
1944-8007
-
Neutron diffraction study of the structural and magnetic properties of ε-Fe3N1.098 and ε-Fe2.322Co0.678N0.888
Li Lei, Leilei Zhang, Shangpan Gao, Qiwei Hu, Leiming Fang, Xiping Chen, Yuanhua Xia, Xianlong Wang, Hiroaki Ohfuji, Yohei Kojima, Simon A.T. Redfern, Zhi Zeng, Bo Chen, Duanwei He, Tetsuo Irifune
Journal of Alloys and Compounds 752 99-105 2018/07/05
Publisher:
Elsevier Ltd
DOI：
10.1016/j.jallcom.2018.04.143
ISSN：
0925-8388
-
A step toward better understanding of behavior of organic materials at simultaneous high pressures and high temperatures
N. Chertkova, H. Ohfuji, R. Nomura, H. Kadobayashi, T. Irifune
High Pressure Research 38 337-347 2018/07/03
DOI：
10.1080/08957959.2018.1476506
ISSN：
0895-7959
-
Synthesis of ultrafine nano-polycrystalline cubic boron nitride by direct transformation under ultrahigh pressure
Yoshio Ichida, Hiroaki Ohfuji, Tetsuo Irifune, Takehiro kunimoto, Yohei Kojima, Toru Shinmei
Journal of the European Ceramic Society 38 (7) 2815-2822 2018/07
DOI：
10.1016/j.jeurceramsoc.2018.02.023
ISSN：
0955-2219
eISSN：
1873-619X
-
New Data on Diamond–Graphite Relationships in the Gneisses of the Kokchetav Massif (Northern Kazakhstan)
D. S. Mikhailenko, O. V. Shchepetova, K. A. Musiyachenko, A. V. Korsakov, Hiroaki Ohfuji, I. V. Pekov
Doklady Earth Sciences 480 814-817 2018/06/01
DOI：
10.1134/S1028334X18060272
ISSN：
1028-334X
-
Transition in deformation mechanism during high-temperature tensile testing of friction-stir-processed 5083 aluminum alloy
Takashi Mizuguchi, Tsutomu Ito, Kota Kimura, Tokiko Kurisaka, Hiroaki Ohfuji
Zairyo/Journal of the Society of Materials Science, Japan 67 (5) 568-573 2018/05/01
Publisher:
Society of Materials Science Japan
DOI：
10.2472/jsms.67.568
ISSN：
1880-7488 0514-5163
-
Oxidation states of Fe in constituent minerals of a spinel Lherzolite xenolith from the Tariat depression, Mongolia: The significance of Fe3+ in olivine
Terumi Ejima, Yasuhito Osanai, Masahide Akasaka, Tatsuro Adachi, Nobuhiko Nakano, Yoshiaki Kon, Hiroaki Ohfuji, Jargalan Sereenen
Minerals 8 (5) 2018/05/01
Publisher:
MDPI AG
DOI：
10.3390/min8050204
ISSN：
2075-163X
-
In situ Raman and X-ray diffraction studies on the high pressure and temperature stability of methane hydrate up to 55 GPa
Hirokazu Kadobayashi, Hisako Hirai, Hiroaki Ohfuji, Michika Ohtake, Yoshitaka Yamamoto
Journal of Chemical Physics 148 (16) 2018/04/28
Publisher:
American Institute of Physics Inc.
DOI：
10.1063/1.5013302
ISSN：
0021-9606
-
Quenchable compressed graphite synthesized from neutron-irradiated highly oriented pyrolytic graphite in high pressure treatment at 1500 °c
Keisuke Niwase, Mititaka Terasawa, Shin-Ichi Honda, Masahito Niibe, Tomohiko Hisakuni, Tadao Iwata, Yuji Higo, Takeshi Hirai, Toru Shinmei, Hiroaki Ohfuji, Tetsuo Irifune
Journal of Applied Physics 123 (16) 2018/04/28
Publisher:
American Institute of Physics Inc.
DOI：
10.1063/1.5011209
ISSN：
1089-7550 0021-8979
-
Electronic properties of nano-polycrystalline diamond synthesised by high-pressure and high-temperature technique
Rei Fukuta, Fumitaro Ishikawa, Akihiro Ishikawa, Kohsuke Hamada, Masafumi Matsushita, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune
Diamond and Related Materials 84 66-70 2018/04/01
Publisher:
Elsevier Ltd
DOI：
10.1016/j.diamond.2018.03.007
ISSN：
0925-9635
-
High pressure generation using double-stage diamond anvil technique: problems and equations of state of rhenium
Takeshi Sakai, Takehiko Yagi, Tetsuo Irifune, Hirokazu Kadobayashi, Naohisa Hirao, Takehiro Kunimoto, Hiroaki Ohfuji, Saori Kawaguchi-Imada, Yasuo Ohishi, Shigehiko Tateno, Kei Hirose
High Pressure Research 38 (2) 107-119 2018/04
DOI：
10.1080/08957959.2018.1448082
ISSN：
0895-7959
eISSN：
1477-2299
-
High-Pressure Synthesis of CeOCl Crystals and Investigation of Their Photoluminescence and Compressibility Properties
Leilei Zhang, Ya Cheng, Li Lei, Xianlong Wang, Qiwei Hu, Qiming Wang, Hiroaki Ohfuji, Yohei Kojima, Qiang Zhang, Zhi Zeng, Fang Peng, Zili Kou, Duanwei He, Tetsuo Irifune
Crystal Growth and Design 18 (3) 1843-1847 2018/03/07
Publisher:
American Chemical Society
DOI：
10.1021/acs.cgd.7b01712
ISSN：
1528-7505 1528-7483
-
Transparent polycrystalline nanoceramics consisting of triclinic Al2SiO5 kyanite and Al2O3 corundum
Nico A. Gaida, Norimasa Nishiyama, Atsunobu Masuno, Ulrich Schürmann, Christopher Giehl, Oliver Beermann, Hiroaki Ohfuji, Jozef Bednarcik, Eleonora Kulik, Astrid Holzheid, Tetsuo Irifune, Lorenz Kienle
Journal of the American Ceramic Society 101 (3) 998-1003 2018/03/01
Publisher:
Blackwell Publishing Inc.
DOI：
10.1111/jace.15281
ISSN：
1551-2916 0002-7820
-
Strengthening effects of interstitial nitrogen on rhenium
Lei Qi, Li Lei, Qiwei Hu, Leilei Zhang, Leihao Feng, Meifang Pu, Hiroaki Ohfuji, Tetsuo Irifune
Journal of Applied Physics 123 (5) 2018/02/07
Publisher:
American Institute of Physics Inc.
DOI：
10.1063/1.5010834
ISSN：
1089-7550 0021-8979
-
Nano-polycrystalline diamond synthesized from neutron-irradiated highly oriented pyrolytic graphite (HOPG)
Mititaka Terasawa, Shin-ichi Honda, Keisuke Niwase, Masahito Niibe, Tomohiko Hisakuni, Tadao Iwata, Yuji Higo, Toru Shinmei, Hiroaki Ohfuji, Tetsuo Irifune
Diamond and Related Materials 82 132-136 2018/02/01
Publisher:
Elsevier Ltd
DOI：
10.1016/j.diamond.2018.01.001
ISSN：
0925-9635
-
Neutron powder diffraction and high-pressure synchrotron x-ray diffraction study of tantalum nitrides
Lei-Hao Feng, Qi-Wei Hu, Li Lei, Lei-Ming Fang, Lei Qi, Lei-Lei Zhang, Mei-Fang Pu, Zi-Li Kou, Fang Peng, Xi-Ping Chen, Yuan-Hua Xia, Yohei Kojima, Hiroaki Ohfuji, Duan-Wei He, Bo Chen, Tetsuo Irifune
Chinese Physics B 27 (2) 2018/02/01
Publisher:
Institute of Physics Publishing
DOI：
10.1088/1674-1056/27/2/026201
ISSN：
2058-3834 1674-1056
-
Pressure induced solid-solid reconstructive phase transition in LiGaO2 dominated by elastic strain
Qiwei Hu, Xiaozhi Yan, Li Lei, Qiming Wang, Leihao Feng, Lei Qi, Leilei Zhang, Fang Peng, Hiroaki Ohfuji, Duanwei He
Physical Review B 97 (1) 2018/01/25
Publisher:
American Physical Society
DOI：
10.1103/PhysRevB.97.014106
ISSN：
2469-9969 2469-9950
-
Crystallization and texturing in graphite-diamond transformation
Hiroaki Ohfuji
Japanese Magazine of Mineralogical and Petrological Sciences 47 (1) 1-12 2018
Publisher:
Japanese Association of Mineralogists Petrologists and Economic Geologists
DOI：
10.2465/gkk.180104
ISSN：
1349-7979 1345-630X
-
Forbidden mineral assemblage coesite-disordered graphite in diamond-bearing kyanite gneisses (Kokchetav Massif)
Olga V. Shchepetova, Andrey Korsakov, Denis Mikhailenko, Pavel Zelenovskiy, Vladimir Shur, Hiroaki Ohfuji
JOURNAL OF RAMAN SPECTROSCOPY 48 (11) 1606-1612 2017/11
DOI：
10.1002/jrs.5167
ISSN：
0377-0486
eISSN：
1097-4555
-
Phase Relations in the System MgSiO3-Al2O3 up to 2300K at Lower Mantle Pressures
Zhaodong Liu, Masayuki Nishi, Takayuki Ishii, Hongzhan Fei, Nobuyoshi Miyajima, Tiziana Boffa Ballaran, Hiroaki Ohfuji, Takeshi Sakai, Lin Wang, Svyatoslav Shcheka, Takeshi Arimoto, Yoshinori Tange, Yuji Higo, Tetsuo Irifune, Tomoo Katsura
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 122 (10) 7775-7788 2017/10
DOI：
10.1002/2017JB014579
ISSN：
2169-9313
eISSN：
2169-9356
-
Intermediate-depth earthquakes linked to localized heating in dunite and harzburgite
Tomohiro Ohuchi, Xinglin Lei, Hiroaki Ohfuji, Yuji Higo, Yoshinori Tange, Takeshi Sakai, Kiyoshi Fujino, Tetsuo Irifune
NATURE GEOSCIENCE 10 (10) 771-+ 2017/10
DOI：
10.1038/NGEO3011
ISSN：
1752-0894
eISSN：
1752-0908
-
Synthesis of coarse-grain-dispersed nano-polycrystalline cubic boron nitride by direct transformation under ultrahigh pressure
Yoshio Ichida, Hiroaki Ohfuji, Tetsuo Irifune, Takehiro Kunimoto, Yohei Kojima, Toru Shinmei
DIAMOND AND RELATED MATERIALS 77 25-34 2017/08
DOI：
10.1016/j.diamond.2017.04.020
ISSN：
0925-9635
eISSN：
1879-0062
-
Water-bearing, high-pressure Ca-silicates
Peter Nemeth, Kurt Leinenweber, Hiroaki Ohfuji, Thomas Groy, Kenneth J. Domanik, Istvan J. Kovacs, Judit S. Kovacs, Peter R. Buseck
EARTH AND PLANETARY SCIENCE LETTERS 469 148-155 2017/07
DOI：
10.1016/j.epsl.2017.04.011
ISSN：
0012-821X
eISSN：
1385-013X
-
A nearly water-saturated mantle transition zone inferred from mineral viscosity
Peer-reviewed
Hongzhan Fei, Daisuke Yamazaki, Moe Sakurai, Nobuyoshi Miyajima, Hiroaki Ohfuji, Tomoo Katsura, Takafumi Yamamoto
SCIENCE ADVANCES 3 (6) 355-358 2017/06
DOI：
10.1126/sciadv.1603024
ISSN：
2375-2548
-
Precipitates within olivine phenocrysts in oxidized andesitic scoria from Kasayama volcano, Hagi, Japan
Terumi Ejima, Mari Yoneda, Masahide Akasaka, Hiroaki Ohfuji, Yoshiaki Kon, Mariko Nagashima, Yoshihiro Nakamuta
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 112 (3) 116-126 2017/06
DOI：
10.2465/jmps.161219
ISSN：
1345-6296
eISSN：
1349-3825
-
Melting temperatures of MgO under high pressure by micro-texture analysis
T. Kimura, H. Ohfuji, M. Nishi, T. Irifune
NATURE COMMUNICATIONS 8 2017/06
DOI：
10.1038/ncomms15735
ISSN：
2041-1723
-
Transparent polycrystalline cubic silicon nitride
Norimasa Nishiyama, Ryo Ishikawa, Hiroaki Ohfuji, Hauke Marquardt, Alexander Kurnosov, Takashi Taniguchi, Byung-Nam Kim, Hidehiro Yoshida, Atsunobu Masuno, Jozef Bednarcik, Eleonora Kulik, Yuichi Ikuhara, Fumihiro Wakai, Tetsuo Irifune
SCIENTIFIC REPORTS 7 2017/03
DOI：
10.1038/srep44755
ISSN：
2045-2322
-
Mineralogical and crystallographic features of polycrystalline yakutite diamond
Hiroaki Ohfuji, Motosuke Nakaya, Alexander P. Yelisseyev, Valentin P. Afanasiev, Konstantin D. Litasov
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 112 (1) 46-51 2017/02
DOI：
10.2465/jmps.160719g
ISSN：
1345-6296
eISSN：
1349-3825
-
Stability of Fe-rich bridgmanite up to about 60 GPa and 2300K using multianvil apparatus
Peer-reviewed
Arimoto Takeshi, Irifune Tetsuo, Nishi Masayuki, Ohfuji Hiroaki, Kunimoto Takehiro, Tange Yoshinori
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2017 (0) 112-112 2017
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2017.0_112
-
High-temperature microstructural evolution and room-temperature mechanical properties of friction-stir-processed 5083 aluminum alloy
Mizuguchi Takashi, Ito Tsutomu, Kimura Kota, Kurisaka Tokiko, Ohfuji Hiroaki, Kimura Masaki
Journal of Japan Institute of Light Metals 67 (8) 361-366 2017
Publisher:
The Japan Institute of Light Metals
DOI：
10.2464/jilm.67.361
ISSN：
0451-5994
-
Stability region of K0.2Na0.8AlSi3O8 hollandite at 22 GPa and 2273 K
Youmo Zhou, Tetsuo Irifune, Hiroaki Ohfuji, Toru Shinmei, Wei Du
PHYSICS AND CHEMISTRY OF MINERALS 44 (1) 33-42 2017/01
DOI：
10.1007/s00269-016-0834-5
ISSN：
0342-1791
eISSN：
1432-2021
-
Synthesis of Al2O3/SiO2 nano-nano composite ceramics under high pressure and its inverse Hall-Petch behavior
Nico A. Gaida, Norimasa Nishiyama, Atsunobu Masuno, Astrid Holzheid, Hiroaki Ohfuji, Ulrich Schuermann, Christin Szillus, Eleonora Kulik, Jozef Bednarcik, Oliver Beermann, Christopher Giehl, Lorenz Kienle
JOURNAL OF THE AMERICAN CERAMIC SOCIETY 100 (1) 323-332 2017/01
DOI：
10.1111/jace.14551
ISSN：
0002-7820
eISSN：
1551-2916
-
Transition mechanism of sH to filled-ice Ih structure of methane hydrate under fixed pressure condition
H. Kadobayashi, H. Hirai, H. Ohfuji, Y. Kojima, Y. Ohishi, N. Hirao, M. Ohtake, Y. Yamamoto
JOINT AIRAPT-25TH & EHPRG-53RD INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, 2015 950 2017
DOI：
10.1088/1742-6596/950/4/042044
ISSN：
1742-6588
-
Pressure-induced nano-crystallization of silicate garnets from glass
T. Irifune, K. Kawakami, T. Arimoto, H. Ohfuji, T. Kunimoto, T. Shinmei
Nature Communications 7 2016/12
DOI：
10.1038/ncomms13753
ISSN：
2041-1723
-
Micro- and nano-inclusions in a superdeep diamond from So Luiz, Brazil
Hiroyuki Kagi, Dmitry A. Zedgenizov, Hiroaki Ohfuji, Hidemi Ishibashi
GEOCHEMISTRY INTERNATIONAL 54 (10) 834-838 2016/10
DOI：
10.1134/S0016702916100062
ISSN：
0016-7029
eISSN：
1556-1968
-
Relationships between textural and photoluminescence spectral features of carbonado (natural polycrystalline diamond) and implications for its origin
Hidemi Ishibashi, Hiroyuki Kagi, Shoko Odake, Hiroyuki Ohfuji, Hiroshi Kitawaki
GEOCHEMISTRY INTERNATIONAL 54 (10) 882-889 2016/10
DOI：
10.1134/S0016702916100050
ISSN：
0016-7029
eISSN：
1556-1968
-
High-pressure solid-state metathesis synthesis of ternary iron-based metal nitrides
Shang-Pan Gao, Li Lei, Qi-Wei Hu, Lei-Ming Fang, Xian-Long Wang, Hiroaki Ohfuji, Yohei Kojima, Lei-Lei Zhang, Li-Jie Tan, Zhi Zeng, Fang Peng, Duan-Wei He, Tetsuo Irifune
Gaoya Wuli Xuebao/Chinese Journal of High Pressure Physics 30 (4) 265-270 2016/08/25
Publisher:
Chinese Journal of High Pressure Physics
DOI：
10.11858/gywlxb.2016.04.001
ISSN：
1000-5773
-
Phase relation of CaSO4 at high pressure and temperature up to 90 GPa and 2300 K
Taku Fujii, Hiroaki Ohfuji, Toru Inoue
PHYSICS AND CHEMISTRY OF MINERALS 43 (5) 353-361 2016/05
DOI：
10.1007/s00269-016-0799-4
ISSN：
0342-1791
eISSN：
1432-2021
-
Preferential dissolution of SiO2 from enstatite to H-2 fluid under high pressure and temperature
Ayako Shinozaki, Hiroyuki Kagi, Hisako Hirai, Hiroaki Ohfuji, Taku Okada, Satoshi Nakano, Takehiko Yagi
PHYSICS AND CHEMISTRY OF MINERALS 43 (4) 277-285 2016/04
DOI：
10.1007/s00269-015-0792-3
ISSN：
0342-1791
eISSN：
1432-2021
-
Occurrence of Fe3+ and formation process of precipitates within oxidized olivine phenocrysts in basalt lava from Kuroshima volcano, Goto islands, Nagasaki, Japan
T. Ejima, M. Akasaka, T. Nagao, H. Ohfuji
MINERALOGICAL MAGAZINE 79 (7) 1833-1848 2015/12
DOI：
10.1180/minmag.2015.079.7.08
ISSN：
0026-461X
eISSN：
1471-8022
-
A Complete Solid Solution with Rutile-Type Structure in SiO2-GeO2 System at 12 GPa and 1600 degrees C
Eleonora Kulik, Norimasa Nishiyama, Atsunobu Masuno, Yan Zubavichus, Vadim Murzin, Evgeny Khramov, Akihiro Yamada, Hiroaki Ohfuji, Hans-Christian Wille, Tetsuo Irifune, Tomoo Katsura
JOURNAL OF THE AMERICAN CERAMIC SOCIETY 98 (12) 4111-4116 2015/12
DOI：
10.1111/jace.13859
ISSN：
0002-7820
eISSN：
1551-2916
-
A possible new Al-bearing hydrous Mg-silicate (23 angstrom phase) in the deep upper mantle
Nao Cai, Toru Inoue, Kiyoshi Fujino, Hiroaki Ohfuji, Hisayoshi Yurimoto
AMERICAN MINERALOGIST 100 (10) 2330-2335 2015/10
DOI：
10.2138/am-2015-5148
ISSN：
0003-004X
eISSN：
1945-3027
-
Natural occurrence of pure nano-polycrystalline diamond from impact crater
Hiroaki Ohfuji, Tetsuo Irifune, Konstantin D. Litasov, Tomoharu Yamashita, Futoshi Isobe, Valentin P. Afanasiev, Nikolai P. Pokhilenko
SCIENTIFIC REPORTS 5 2015/10
DOI：
10.1038/srep14702
ISSN：
2045-2322
-
EDS quantification of light elements using osmium surface coating
Hiroaki Ohfuji, Masashi Yamamoto
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 110 (4) 189-195 2015/08
DOI：
10.2465/jmps.141126
ISSN：
1345-6296
eISSN：
1349-3825
-
Long-term observation of permeability in sedimentary rocks under high-temperature and stress conditions and its interpretation mediated by microstructural investigations
Hideaki Yasuhara, Naoki Kinoshita, Hiroaki Ohfuji, Manabu Takahashi, Kazumasa Ito, Kiyoshi Kishida
WATER RESOURCES RESEARCH 51 (7) 5425-5449 2015/07
DOI：
10.1002/2014WR016427
ISSN：
0043-1397
eISSN：
1944-7973
-
Precise Analysis of Microstructural Effects on Mechanical Properties of Cast ADC12 Aluminum Alloy
Mitsuhiro Okayasu, Shuhei Takeuchi, Masaki Yamamoto, Hiroaki Ohfuji, Toshihiro Ochi
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 46A (4) 1597-1609 2015/04
DOI：
10.1007/s11661-015-2747-1
ISSN：
1073-5623
eISSN：
1543-1940
-
In Situ Observation of Pressure-induced Crystallization from Amorphous Calcium Carbonate by Time-resolved X-ray Diffraction
Koji Maruyama, Hiroyuki Kagi, Toru Inoue, Hiroaki Ohfuji, Toru Yoshino
CHEMISTRY LETTERS 44 (4) 434-436 2015/04
DOI：
10.1246/cl.141062
ISSN：
0366-7022
eISSN：
1348-0715
-
High-pressure generation using double stage micro-paired diamond anvils shaped by focused ion beam
Takeshi Sakai, Takehiko Yagi, Hiroaki Ohfuji, Tetsuo Irifune, Yasuo Ohishi, Naohisa Hirao, Yuya Suzuki, Yasushi Kuroda, Takayuki Asakawa, Takashi Kanemura
REVIEW OF SCIENTIFIC INSTRUMENTS 86 (3) 2015/03
DOI：
10.1063/1.4914844
ISSN：
0034-6748
eISSN：
1089-7623
-
Pressure estimation using the 'diamond Raman scale' at low pressures in diamond anvil cell experiments using a highly confocal Raman system
Taku Fujii, Hiroaki Ohfuji
MEASUREMENT SCIENCE AND TECHNOLOGY 26 (2) 2015/02
DOI：
10.1088/0957-0233/26/2/025501
ISSN：
0957-0233
eISSN：
1361-6501
-
Microstructures of slickenside developed in coaly bed and its effect on landslides
Sato Taku, Ando Jun-ichi, Kagi Hiroyuki, Ohfuji Hiroaki
Annual Meeting of the Geological Society of Japan 2015 524-524 2015
Publisher:
The Geological Society of Japan
DOI：
10.14863/geosocabst.2015.0_524
-
High-pressure and high-temperature synthesis of rhenium carbide using rhenium and nanoscale amorphous two-dimensional carbon nitride
Peer-reviewed
Yasui Nozomu, Sougawa Masaya, Hirai Masaaki, Yamamoto Kaoru, Okada Taku, Yamazaki Daisuke, Kojima Yohei, Ohfuji Hiroaki, Kunitsugu Shinsuke, Takarabe Kenichi
COGENT PHYSICS 2 (1) 2015
DOI：
10.1080/23311940.2015.1076702
ISSN：
2331-1940
-
Mechanical Strength and Failure Characteristics of Cast Mg-9 pctAl-1 pctZn Alloys Produced by a Heated-Mold Continuous Casting Process: Tensile Properties
Mitsuhiro Okayasu, Shuhei Takeuchi, Hiroaki Ohfuji
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 45A (12) 5767-5776 2014/11
DOI：
10.1007/s11661-014-2497-5
ISSN：
1073-5623
eISSN：
1543-1940
-
Fracture-induced amorphization of polycrystalline SiO2 stishovite: a potential platform for toughening in ceramics
Norimasa Nishiyama, Fumihiro Wakai, Hiroaki Ohfuji, Yusuke Tamenori, Hidenobu Murata, Takashi Taniguchi, Masafumi Matsushita, Manabu Takahashi, Eleonora Kulik, Kimiko Yoshida, Kouhei Wada, Jozef Bednarcik, Tetsuo Irifune
SCIENTIFIC REPORTS 4 2014/10
DOI：
10.1038/srep06558
ISSN：
2045-2322
-
Ultralow viscosity of carbonate melts at high pressures
Yoshio Kono, Curtis Kenney-Benson, Daniel Hummer, Hiroaki Ohfuji, Changyong Park, Guoyin Shen, Yanbin Wang, Abby Kavner, Craig E. Manning
NATURE COMMUNICATIONS 5 2014/10
DOI：
10.1038/ncomms6091
ISSN：
2041-1723
-
Formation of SiH4 and H2O by the dissolution of quartz in H-2 fluid under high pressure and temperature
Ayako Shinozaki, Hiroyuki Kagi, Naoki Noguchi, Hisako Hirai, Hiroaki Ohfuji, Taku Okada, Satoshi Nakano, Takehiko Yagi
AMERICAN MINERALOGIST 99 (7) 1265-1269 2014/07
DOI：
10.2138/am.2014.4798
ISSN：
0003-004X
eISSN：
1945-3027
-
Spin transition, substitution, and partitioning of iron in lower mantle minerals
Kiyoshi Fujino, Daisuke Nishio-Hamane, Takaya Nagai, Yusuke Seto, Yasuhiro Kuwayama, Matthew Whitaker, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune
PHYSICS OF THE EARTH AND PLANETARY INTERIORS 228 186-191 2014/03
DOI：
10.1016/j.pepi.2013.12.008
ISSN：
0031-9201
eISSN：
1872-7395
-
Strain induced martensite formation characteristics of austenite stainless steel during various loading conditions
M. Okayasu, H. Fukui, H. Ohfuji, T. Shiraishi
MATERIALS SCIENCE AND TECHNOLOGY 30 (3) 301-308 2014/03
DOI：
10.1179/1743284713Y.0000000353
ISSN：
0267-0836
eISSN：
1743-2847
-
Influence of H2 fluid on the chemical composition of coexisting silicate minerals.
Peer-reviewed
Shinozaki Ayako, Kagi Hiroyuki, Hirai Hisako, Ohfuji Hiroaki, Okada Taku, Nakano Satoshi, Yagi Takehiko
Abstracts of Annual Meeting of the Geochemical Society of Japan 61 (0) 241-241 2014
Publisher:
GEOCHEMICAL SOCIETY OF JAPAN
DOI：
10.14862/geochemproc.61.0_241
-
Fracture-induced amorphization of polycrystalline SiO2 stishovite: nanoscale transformation toughening in the hardest oxide
Peer-reviewed
Nishiyama Norimasa, Fumihiro Wakai, Hiroaki Ohfuji, Yusuke Tamenori, Hidenobu Murata, Takashi Taniguchi, Masafumi Matsushita, Manabu Takahashi, Eleonora Kulik, Kimiko Yoshida, Kouhei Wada, Jozef Bednarcik, Tetsuo Irifune
Scientific Reports 4 6558 2014
DOI：
10.1038/srep06558
-
Influence of microstructural characteristics on mechanical properties of ADC12 aluminum alloy
M. Okayasu, K. Ota, S. Takeuchi, H. Ohfuji, T. Shiraishi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 592 189-200 2014/01
DOI：
10.1016/j.msea.2013.10.098
ISSN：
0921-5093
eISSN：
1873-4936
-
Transparent nanocrystalline bulk alumina obtained at 7.7 GPa and 800 degrees C
Norimasa Nishiyama, Takashi Taniguchi, Hiroaki Ohfuji, Kimiko Yoshida, Fumihiro Wakai, Byung-Nam Kim, Hidehiro Yoshida, Yuji Higo, Astrid Holzheid, Oliver Beermann, Tetsuo Irifune, Yoshio Sakka, Ken-ichi Funakoshi
SCRIPTA MATERIALIA 69 (5) 362-365 2013/09
DOI：
10.1016/j.scriptamat.2013.05.017
ISSN：
1359-6462
-
Strain-induced martensite formation in austenitic stainless steel
Mitsuhiro Okayasu, Hironobu Fukui, Hiroaki Ohfuji, Tetsuro Shiraishi
JOURNAL OF MATERIALS SCIENCE 48 (18) 6157-6166 2013/09
DOI：
10.1007/s10853-013-7412-8
ISSN：
0022-2461
-
Influence of H-2 fluid on the stability and dissolution of Mg2SiO4 forsterite under high pressure and high temperature
Ayako Shinozaki, Hisako Hirai, Hiroaki Ohfuji, Taku Okada, Shin-ichi Machida, Takehiko Yagi
AMERICAN MINERALOGIST 98 (8-9) 1604-1609 2013/08
DOI：
10.2138/am.2013.4434
ISSN：
0003-004X
-
Formation of diamond powders from melamine under high pressure and high temperature
Lei-Ming Fang, Xi-Ping Chen, H. Ohfuji, T. Irifune, Guang-Ai Sun, Bo Chen, Shu-Ming Peng
Chinese Physics C 37 (8) 2013/08
DOI：
10.1088/1674-1137/37/8/088002
ISSN：
1674-1137
-
High-pressure Raman spectroscopy study of LiGaO2
Li Lei, Hiroaki Ohfuji, Jiaqian Qin, Xinyu Zhang, Fulong Wang, Tetsuo Irifune
SOLID STATE COMMUNICATIONS 164 6-10 2013/06
DOI：
10.1016/j.ssc.2013.03.030
ISSN：
0038-1098
-
Spin transition and substitution of Fe3+ in Al-bearing post-Mg-perovskite
Kiyoshi Fujino, Daisuke Nishio-Hamane, Yasuhiro Kuwayama, Nagayoshi Sata, Sayaka Murakami, Matthew Whitaker, Ayako Shinozaki, Hiroaki Ohfuji, Yohei Kojima, Tetsuo Irifune, Nozomu Hiraoka, Hirofumi Ishii, Ku-Ding Tsuei
PHYSICS OF THE EARTH AND PLANETARY INTERIORS 217 31-35 2013/04
DOI：
10.1016/j.pepi.2013.01.006
ISSN：
0031-9201
eISSN：
1872-7395
-
Effects of Temperature Difference and Interlayer Thickness on the Thermal Fatigue Life of S45C/Cu/Si3N4 Composites
攝津暢浩, 松下正史, 高橋学, 水井洸佑, 岡部永年, 大藤弘明
材料システム 31 43-50 2013/03/15
ISSN：
0286-6013
-
Oxidation states of Fe and precipitates within olivine from orthopyroxene-olivine-clinopyroxene andesite lava from Kasayama volcano, Hagi, Yamaguchi, Japan
Terumi Ejima, Masahide Akasaka, Takashi Nagao, Hiroaki Ohfuji
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 108 (1) 25-36 2013/02
DOI：
10.2465/jmps.120621a
ISSN：
1345-6296
eISSN：
1349-3825
-
高温高圧下におけるグラファイト－ダイヤモンド相転移と組織化メカニズム
大藤 弘明
日本結晶学会誌 55 s6 2013
Publisher:
The Crystallographic Society of Japan
DOI：
10.5940/jcrsj.55.s6
ISSN：
0369-4585
-
Slow Si-Al interdiffusion in garnet and stagnation of subducting slabs
Masayuki Nishi, Tomoaki Kubo, Hiroaki Ohfuji, Takumi Kato, Yu Nishihara, Tetsuo Irifune
EARTH AND PLANETARY SCIENCE LETTERS 361 44-49 2013/01
DOI：
10.1016/j.epsl.2012.11.022
ISSN：
0012-821X
eISSN：
1385-013X
-
Mechanical properties of SPCC low carbon steel joints prepared by metal inert gas welding
Mitsuhiro Okayasu, Yuki Ohkura, Tatsuaki Sakamoto, Shuhei Takeuchi, Hiroaki Ohfuji, Tetsuro Shiraishi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 560 643-652 2013/01
DOI：
10.1016/j.msea.2012.10.008
ISSN：
0921-5093
-
Nanolayered Diamond Sintered Compact Obtained by Direct Conversion from Highly Oriented Graphite under High Pressure and High Temperature
Futoshi Isobe, Hiroaki Ohfuji, Hitoshi Sumiya, Tetsuo Irifune
JOURNAL OF NANOMATERIALS 2013 2013
DOI：
10.1155/2013/380165
ISSN：
1687-4110
-
A Novel Technique for the Synthesis of Nanodiamond Powder
Leiming Fang, Hiroaki Ohfuji, Tetsuo Irifune
JOURNAL OF NANOMATERIALS 2013 2013
DOI：
10.1155/2013/201845
ISSN：
1687-4110
eISSN：
1687-4129
-
Structure and stability of carbon nitride under high pressure and high temperature up to 125 GPa and 3000 K
Yohei Kojima, Hiroaki Ohfuji
Diamond and Related Materials 39 1-7 2013
DOI：
10.1016/j.diamond.2013.07.006
ISSN：
0925-9635
-
Synthesis of nanocrystalline bulk SiO2 stishovite with very high toughness
Norimasa Nishiyama, Satoshi Seike, Teruo Hamaguchi, Tetsuo Irifune, Masafumi Matsushita, Manabu Takahashi, Hiroaki Ohfuji, Yoshio Kono
SCRIPTA MATERIALIA 67 (12) 955-958 2012/12
DOI：
10.1016/j.scriptamat.2012.08.028
ISSN：
1359-6462
-
Oxidation state of Fe in olivine in andesitic scoria from Kasayama volcano, Hagi, Yamaguchi Prefecture, Japan
Terumi Ejima, Masahide Akasaka, Takashi Nagao, Hiroaki Ohfuji
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 107 (6) 215-225 2012/12
DOI：
10.2465/jmps.120605
ISSN：
1345-6296
eISSN：
1349-3825
-
Intracrystalline nucleation during the post-garnet transformation under large overpressure conditions in deep subducting slabs
Masayuki Nishi, Tetsuo Irifune, Hiroaki Ohfuji, Yoshinori Tange
GEOPHYSICAL RESEARCH LETTERS 39 2012/12
DOI：
10.1029/2012GL053915
ISSN：
0094-8276
-
Sound velocities of MORB and absence of a basaltic layer in the mantle transition region
Yoshio Kono, Tetsuo Irifune, Hiroaki Ohfuji, Yuji Higo, Ken-ichi Funakoshi
GEOPHYSICAL RESEARCH LETTERS 39 2012/12
DOI：
10.1029/2012GL054009
ISSN：
0094-8276
-
Wear resistance of nano-polycrystalline diamond with various hexagonal diamond contents
A. Kurio, Y. Tanaka, H. Sumiya, T. Irifune, T. Shinmei, H. Ohfuji, H. Kagi
JOURNAL OF SUPERHARD MATERIALS 34 (6) 343-349 2012/11
DOI：
10.3103/S1063457612060081
ISSN：
1063-4576
-
Formation process of slickenside developed in chert block
ANDO J., NISHIWAKI T., OHFUJI H., WATANABE K., HAYASAKA Y.
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2012 9-9 2012/09/15
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2012.0_9
ISSN：
1348-6543
-
High-P behavior of anorthite composition and some phase relations of the CaO-Al2O3-SiO2 system to the lower mantle of the Earth, and their geophysical implications
Xi Liu, Hiroaki Ohfuji, Norimasa Nishiyama, Qiang He, Takeshi Sanehira, Tetsuo Irifune
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 117 2012/09
DOI：
10.1029/2012JB009290
ISSN：
2169-9313
eISSN：
2169-9356
-
Polycrystalline gamma-boron: As hard as polycrystalline cubic boron nitride
Jiaqian Qin, Norimasa Nishiyama, Hiroaki Ohfuji, Toru Shinmei, Li Lei, Duanwei He, Tetsuo Irifune
SCRIPTA MATERIALIA 67 (3) 257-260 2012/08
DOI：
10.1016/j.scriptamat.2012.04.032
ISSN：
1359-6462
-
Hydrous fluid as the growth media of natural polycrystalline diamond, carbonado: Implication from IR spectra and microtextural observations
Hidemi Ishibashi, Hiroyuki Kagi, Haruko Sakuai, Hiroaki Ohfuji, Hirochika Sumino
AMERICAN MINERALOGIST 97 (8-9) 1366-1372 2012/08
DOI：
10.2138/am.2012.4097
ISSN：
0003-004X
-
Disorder-activated Raman spectra of cubic rocksalt-type Li(1-x)/2Ga(1-x)/2MxO (M=Mg, Zn) alloys
Li Lei, Hiroaki Ohfuji, Tetsuo Irifune, Jiaqian Qin, Xinyu Zhang, Toru Shinmei
JOURNAL OF APPLIED PHYSICS 112 (4) 2012/08
DOI：
10.1063/1.4739766
ISSN：
0021-8979
eISSN：
1089-7550
-
Influence of graphite crystallinity on the microtexture of nano-polycrystalline diamond obtained by direct conversion
Hiroaki Ohfuji, Shinsuke Okimoto, Takehiro Kunimoto, Futoshi Isobe, Hitoshi Sumiya, Kazuo Komatsu, Tetsuo Irifune
PHYSICS AND CHEMISTRY OF MINERALS 39 (7) 543-552 2012/07
DOI：
10.1007/s00269-012-0510-3
ISSN：
0342-1791
eISSN：
1432-2021
-
Exsolution of Garnet and Clinopyroxene from High-Al Pyroxenes in Xugou Peridotite, Eastern China
D. Spengler, M. Obata, T. Hirajima, L. Ottolini, H. Ohfuji, A. Tamura, S. Arai
JOURNAL OF PETROLOGY 53 (7) 1477-1504 2012/07
DOI：
10.1093/petrology/egs023
ISSN：
0022-3530
-
Elasticity and sound velocities of polycrystalline Mg3Al2(SiO4)(3) garnet up to 20 GPa and 1700 K
Yongtao Zou, Tetsuo Irifune, Steeve Greaux, Matthew L. Whitaker, Toru Shinmei, Hiroaki Ohfuji, Ryo Negishi, Yuji Higo
JOURNAL OF APPLIED PHYSICS 112 (1) 2012/07
DOI：
10.1063/1.4736407
ISSN：
0021-8979
-
A study of the mechanical properties of an Al-Si-Cu alloy (ADC12) produced by various casting processes
M. Okayasu, Y. Ohkura, S. Takeuchi, S. Takasu, H. Ohfuji, T. Shiraishi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 543 185-192 2012/05
DOI：
10.1016/j.msea.2012.02.073
ISSN：
0921-5093
-
Erratum: Volume and structural study of Fe64Mn36 anti-ferromagnetic Invar alloy under high pressure (Journal of Magnetism and Magnetic Materials (2011) 323:6 (838841))
Peer-reviewed
M. Matsushita, S. Nakano, H. Ohfuji, I. Yamada, T. Kikegawa
Journal of Magnetism and Magnetic Materials 324 (4) 655 2012/02
DOI：
10.1016/j.jmmm.2011.08.041
ISSN：
0304-8853
-
Influence of brazing filler metal diffusion on the mechanical strength of SUS304/Cu/Si 3N 4 Composite
Nobuhiro Settsu, Masafumi Matsushita, Manabu Takahashi, Masaki Tanimoto, Hiroaki Ohfuji
Zairyo/Journal of the Society of Materials Science, Japan 61 (2) 197-202 2012/02
DOI：
10.2472/jsms.61.197
ISSN：
0514-5163
-
Volume and structural study of Fe64Mn36 anti-ferromagnetic Invar alloy under high pressure (vol 323, pg 838, 2011)
M. Matsushita, S. Nakano, H. Ohfuji, I. Yamada, T. Kikegawa
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 324 (4) 655-655 2012/02
DOI：
10.1016/j.jmmm.2011.08.041
ISSN：
0304-8853
-
Dissolution of silicate minerals into H2 fluids under high pressure and temperature.
Peer-reviewed
Shinozaki Ayako, Hirai Hisako, Ohfuji Hiroaki, Oohashi Kazuki, Okada Taku, Machida Shin-ich, Kagi Hiroyuki, Yagi Takehiko
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2012 (0) 125-125 2012
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2012.0_125
-
Self-organization process of framboidal pyrite investigated by microtextural analysis
Hiroaki Ohfuji
Japanese Magazine of Mineralogical and Petrological Sciences 41 (1) 12-18 2012
DOI：
10.2465/gkk.111207
ISSN：
1349-7979 1345-630X
-
Phase relations in boron at pressures up to 18 GPa and temperatures up to 2200 degrees C
Jiaqian Qin, Tetsuo Irifune, Haruhiko Dekura, Hiroaki Ohfuji, Norimasa Nishiyama, Li Lei, Toru Shinmei
PHYSICAL REVIEW B 85 (1) 2012/01
DOI：
10.1103/PhysRevB.85.014107
ISSN：
1098-0121
eISSN：
2469-9969
-
Temporal alteration of fracture permeability in granite under hydrothermal conditions and its interpretation by coupled chemo-mechanical model
Hide Yasuhara, Naoki Kinoshita, Hiroaki Ohfuji, Dae Sung Lee, Shinichiro Nakashima, Kiyoshi Kishida
APPLIED GEOCHEMISTRY 26 (12) 2074-2088 2011/12
DOI：
10.1016/j.apgeochem.2011.07.005
ISSN：
0883-2927
-
Oxidation state of Fe in olivine in a lherzolite xenolith from Oku district, Oki-Dogo Island, Shimane Prefecture, Japan
Terumi Ejima, Masahide Akasaka, Hiroaki Ohfuji
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 106 (5) 246-254 2011/10
DOI：
10.2465/jmps.110125
ISSN：
1345-6296
eISSN：
1349-3825
-
Retentivity of CO2 in fluid inclusions in mantle minerals
Junji Yamamoto, Kazuhiko Otsuka, Hiroaki Ohfuji, Hidemi Ishibashi, Naoto Hirano, Hiroyuki Kagi
EUROPEAN JOURNAL OF MINERALOGY 23 (5) 805-815 2011/10
DOI：
10.1127/0935-1221/2011/0023-2150
ISSN：
0935-1221
-
Experimental study on the martensitic transformation of graphite to hexagonal diamond
OHFUJI Hiroaki, TAKEUCHI Hiroki
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2011 200-200 2011/09/05
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2011.0.196.0
ISSN：
1348-6543
-
High-pressure Raman studies and heat capacity measurements on the MgSiO3 analogue CaIr0.5Pt0.5O3
Shigeto Hirai, Yohei Kojima, Hiroaki Ohfuji, Norimasa Nishiyama, Tetsuo Irifune, Stephan Klemme, Geoffrey Bromiley, J. Paul Attfield
PHYSICS AND CHEMISTRY OF MINERALS 38 (8) 631-637 2011/09
DOI：
10.1007/s00269-011-0435-2
ISSN：
0342-1791
-
Experimental study on the stability of graphitic C3N4 under high pressure and high temperature
Leiming Fang, Hiroaki Ohfuji, Toru Shinmei, Tetsuo Irifune
DIAMOND AND RELATED MATERIALS 20 (5-6) 819-825 2011/05
DOI：
10.1016/j.diamond.2011.03.034
ISSN：
0925-9635
eISSN：
1879-0062
-
Phase transformations of Ca3Al2Si3O12 grossular garnet to the depths of the Earth's mantle transition zone
Steeve Greaux, Norimasa Nishiyama, Yoshio Kono, Laurent Gautron, Hiroaki Ohfuji, Takehiro Kunimoto, Nicolas Menguy, Tetsuo Irifune
PHYSICS OF THE EARTH AND PLANETARY INTERIORS 185 (3-4) 89-99 2011/04
DOI：
10.1016/j.pepi.2011.02.001
ISSN：
0031-9201
eISSN：
1872-7395
-
Volume and structural study of Fe64Mn36 anti-ferromagnetic Invar alloy under high pressure
M. Matsushita, S. Nakano, H. Ohfuji, I. Yamada, T. Kikegawa
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 323 (6) 838-841 2011/03
DOI：
10.1016/j.jmmm.2010.11.029
ISSN：
0304-8853
-
Framboidal Pyrite : An Extraordinary Self-Organization of a Natural Mineral
OHFUJI Hiroaki
X-RAYS 53 (1) 46-51 2011/02/28
Publisher:
The Crystallographic Society of Japan
DOI：
10.5940/jcrsj.53.46
ISSN：
0369-4585
-
EBSD analysis of the Submicron Width Fibber Shaped Grain Copper Fabricated by Drawing
Peer-reviewed
Masafumi Matsushita, Tomoya Kuji, Hiromitsu Kuroda, Seigi Aoyama, Hiroaki Ohfuji
Materials Sciences and Application 2 911-916 2011
-
Pressure and Temperature Dependences of Elastic Properties of Grossular Garnet up to 17 GPa and 1 650 K
Yoshio Kono, Steeve Greaux, Yuji Higo, Hiroaki Ohfuji, Tetsuo Irifune
JOURNAL OF EARTH SCIENCE 21 (5) 782-791 2010/10
DOI：
10.1007/s12583-010-0112-2
ISSN：
1674-487X
-
Cation order-disorder phase transitions in LiGaO2: Observation of the pathways of ternary wurtzite under high pressure
Li Lei, Tetsuo Irifune, Toru Shinmei, Hiroaki Ohfuji, Leiming Fang
JOURNAL OF APPLIED PHYSICS 108 (8) 2010/10
DOI：
10.1063/1.3487976
ISSN：
0021-8979
eISSN：
1089-7550
-
EBSD Analysis of Re-Crystallization Process for Cold Rolled Cu Sheet
MATSUSHITA MASAFUMI, NISHIMURA YUSUKE, OFUJI HIROAKI
銅と銅合金 49 (1) 56-60 2010/08/01
Publisher:
ISSN：
1347-7234
-
CaCu3Pt4O12: The First Perovskite with the B Site Fully Occupied by Pt4+
Ikuya Yamada, Yuka Takahashi, Kenya Ohgushi, Norimasa Nishiyama, Ryoji Takahashi, Kohei Wada, Takehiro Kunimoto, Hiroaki Ohfuji, Yohei Kojima, Toru Inoue, Tetsuo Irifune
INORGANIC CHEMISTRY 49 (15) 6778-6780 2010/08
DOI：
10.1021/ic100474x
ISSN：
0020-1669
-
Micro-/nanostructural investigation of laser-cut surfaces of single- and polycrystalline diamonds
Hiroaki Ohfuji, Takuo Okuchi, Shoko Odake, Hiroyuki Kagi, Hitoshi Sumiya, Tetsuo Irifune
DIAMOND AND RELATED MATERIALS 19 (7-9) 1040-1051 2010/07
DOI：
10.1016/j.diamond.2010.02.015
ISSN：
0925-9635
-
Spin transition of ferric iron in post-Mg-perovskite by X-ray emission spectroscopy
Peer-reviewed
Fujino Kiyoshi, Irifune Tetsuo, Ishii Hirofumi, Hiraoka Nozomu, Tsuei Ku-Ding, Hamane Daisuke, Kuwayama Yasuhiro, Sata Nagayoshi, Murakami Sayaka, Whitaker Matthew, Shinozaki Ayako, Ohfuji Hiroaki, Kojima Yohei
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2010 (0) 108-108 2010
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2010.0.108.0
-
Analysis of the Recrystallization of Cold-Rolled Copper after Isothermal Annealing using Electron Backscattered Diffraction Patterns
M. Matsushita, H. Ohfuji
DIFFUSION IN SOLIDS AND LIQUIDS V, PTS 1 AND 2 297-301 359-+ 2010
DOI：
10.4028/www.scientific.net/DDF.297-301.359
ISSN：
1012-0386
-
Laser heating in nano-polycrystalline diamond anvil cell
H. Ohfuji, T. Okada, T. Yagi, H. Sumiya, T. Irifune
INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50 215 2010
DOI：
10.1088/1742-6596/215/1/012192
ISSN：
1742-6588
-
Application of nano-polycrystalline diamond to laser-heated diamond anvil cell experiments
H. Ohfuji, T. Okada, T. Yagi, H. Sumiya, T. Irifune
HIGH PRESSURE RESEARCH 30 (1) 142-150 2010
DOI：
10.1080/08957951003600764
ISSN：
0895-7959
eISSN：
1477-2299
-
Origin of unique microstructures in nano-polycrystalline diamond synthesized by direct conversion of graphite at static high pressure
Hiroaki Ohfuji, Kiyoshi Kuroki
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 104 (5) 307-312 2009/10
DOI：
10.2465/jmps.090622i
ISSN：
1345-6296
eISSN：
1349-3825
-
Micromachining and surface processing of the super-hard nano-polycrystalline diamond by three types of pulsed lasers
Takuo Okuchi, Hiroaki Ohfuji, Shoko Odake, Hiroyuki Kagi, Syohei Nagatomo, Mitsuru Sugata, Hitoshi Sumiya
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 96 (4) 833-842 2009/09
DOI：
10.1007/s00339-009-5326-8
ISSN：
0947-8396
-
Nanoscale pseudobrookite layer in the surface glaze of a Japanese sekishu roof tile
K. Watanabe, H. Ohfuji, R. Kitagawa, Y. Matsui
CLAY MINERALS 44 (2) 177-180 2009/06
DOI：
10.1180/claymin.2009.044.2.177
ISSN：
0009-8558
eISSN：
1471-8030
-
Pulsed laser processing of nano-polycrystalline diamond: A comparative study with single crystal diamond
Shoko Odake, Hiroaki Ohfuji, Takuo Okuchi, Hiroyuki Kagi, Hitoshi Sumiya, Tetsuo Irifune
DIAMOND AND RELATED MATERIALS 18 (5-8) 877-880 2009/05
DOI：
10.1016/j.diamond.2008.10.066
ISSN：
0925-9635
-
Analysis of the texture of superplastic carburized duplex stainless alloy
M. Matsushita, T. Suko, S. Matsuda, H. Ohfuji, H. Ogiyama
MATERIALS CHEMISTRY AND PHYSICS 114 (2-3) 522-524 2009/04
DOI：
10.1016/j.matchemphys.2008.11.051
ISSN：
0254-0584
-
Elastic wave velocities and Raman shift of MORB glass at high pressures-Reply
Yoshio Kono, Hiroaki Ohfuji, Yuji Higo, Akihiro Yamada, Toru Inoue, Tetsuo Irifune, Ken-ichi Funakoshi
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 103 (6) 429-431 2008/12
DOI：
10.2465/jmps.080828
ISSN：
1345-6296
eISSN：
1349-3825
-
Initiation strength properties of ring crack caused by sphere indentation in damage-tolerant Advanced Pore-Free SiC
Shinya Matsuda, Manabu Takahashi, Masafumi Matsushita, Nagatoshi Okabe, Hiroaki Ohfuji
Zairyo/Journal of the Society of Materials Science, Japan 57 (11) 1138-1145 2008/11
DOI：
10.2472/jsms.57.1138
ISSN：
0514-5163
-
Elastic wave velocities and Raman shift of MORB glass at high pressures (vol 103, pg 126, 2008)
Peer-reviewed
Yoshio Kono, Hiroaki Ohfuji, Yuji Higo, Akihiro Yamada, Toru Inoue, Tetsuo Irifune, Ken-ichi Funakoshi
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 103 (4) 2008/08
ISSN：
1345-6296
eISSN：
1349-3825
-
Thermal shock fracture properties of damage tolerant advanced pore-free SiC
Shinya Matsuda, Manabu Takahashi, Takushi Onoue, Keiji Ogi, Masafumi Matsushita, Nagatoshi Okabe, Hiroaki Ohfuji
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 74 (8) 1156-1163 2008/08
DOI：
10.1299/kikaia.74.1156
ISSN：
0387-5008
-
Elastic wave velocities and Raman shift of MORB glass at high pressures
Yoshio Kono, Hiroaki Ohfuji, Yuji Higo, Akihiro Yamada, Toru Inoue, Tetsuo Irifune, Ken-ichi Funakoshi
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 103 (2) 126-130 2008/04
DOI：
10.2465/jmps.071022c
ISSN：
1345-6296
eISSN：
1349-3825
-
Sound velocities of majorite garnet and the composition of the mantle transition region
T. Irifune, Y. Higo, T. Inoue, Y. Kono, H. Ohfuji, K. Funakoshi
NATURE 451 (7180) 814-817 2008/02
DOI：
10.1038/nature06551
ISSN：
0028-0836
-
New high-pressure b2 phase of FeS above 180 GPa
Nagayoshi Sata, Hiroaki Ohfuji, Kei Hirose, Hisao Kobayashi, Yasuo Ohishi, Naohisa Hirao
AMERICAN MINERALOGIST 93 (2-3) 492-494 2008/02
DOI：
10.2138/am.2008.2762
ISSN：
0003-004X
-
Microstructural investigation of laser-processed surface of diamonds
Ohfuji Hiroaki, Okuchi Takuo, Odake Shoko, Kagi Hiroyuki, Nagatomo Shohei, Sugata Mitsuru, Sumiya Hitoshi
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2008 154-154 2008
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2008.0.154.0
-
Elastic wave velocities of grossular garnet up to 16.4 GPa and 1650 K
Kono Yoshio, Ohfuji Hiroaki, Greaux Steeve, Inoue Toru, Irifune Tetsuo, Higo Yuji
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2008 195-195 2008
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/jakoka.2008.0.195.0
-
Study for the origin of fracture of advanced pore-free silicon carbide with damage tolerance
Shinya Matsuda, Masafumi Matsushita, Manabu Takahashi, Hiroaki Ohfuji, Nagatoshi Okabe
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 116 (1349) 126-129 2008/01
DOI：
10.2109/jcersj2.116.126
ISSN：
1882-0743
eISSN：
1348-6535
-
Study for the origin of fracture of advanced pore-free silicon carbide with damage tolerance
Shinya Matsuda, Masafumi Matsushita, Manabu Takahashi, Hiroaki Ohfuji, Nagatoshi Okabe
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 116 (1349) 126-129 2008/01
DOI：
10.2109/jcersj2.116.126
ISSN：
1882-0743
eISSN：
1348-6535
-
Erratum: "Elastic wave velocities and Raman shift of MORB glass at high pressures"(Journal of Mineralogical and Petrological Sciences) (2008) vol. 103 (2) (126-130))
Yoshio Kono, Hiroaki Ohfuji, Yuji Higo, Akihiro Yamada, Toru Inoue, Tetsuo Irifune, Ken Ichi Funakoshi
Journal of Mineralogical and Petrological Sciences 103 (4) 303 2008
ISSN：
1345-6296
eISSN：
1349-3825
-
Density profiles of pyrolite and MORB compositions across the 660 km seismic discontinuity
Takeshi Sanehira, Tetsuo Irifune, Toru Shinmei, Hiroaki Ohfuji, Fabrice Brunet, Ken-ichi Funakoshi
HIGH PRESSURE RESEARCH 28 (3) 335-349 2008
DOI：
10.1080/08957950802251357
ISSN：
0895-7959
eISSN：
1477-2299
-
Elastic wave velocities of garnetite with a MORB composition up to 14 GPa
Yoshio Kono, Yuji Higo, Hiroaki Ohfuji, Toru Inoue, Tetsuo Irifune
GEOPHYSICAL RESEARCH LETTERS 34 (14) L14308 2007/07
DOI：
10.1029/2007GL030312
ISSN：
0094-8276
-
A new high-pressure and high-temperature polymorph of FeS
Hiroaki Ohfuji, Nagayoshi Sata, Hisao Kobayashi, Yasuo Ohishi, Kei Hirose, Tetsuo Irifune
PHYSICS AND CHEMISTRY OF MINERALS 34 (5) 335-343 2007/07
DOI：
10.1007/s00269-007-0151-0
ISSN：
0342-1791
-
In situ X-ray experiment on the structure of hydrous Mg-silicate melt under high pressure and high temperature
Akihiro Yamada, Toru Inoue, Satoru Urakawa, Ken-ichi Funakoshi, Nobumasa Funamori, Takumi Kikegawa, Hiroaki Ohfuji, Tetsuo Irifune
GEOPHYSICAL RESEARCH LETTERS 34 (10) L10303 2007/05
DOI：
10.1029/2006GL028823
ISSN：
0094-8276
-
Nanodiamond nucleation below 2273 K at 15 GPa from carbons with different structural organizations
Corentin Le Guillou, Fabrice Brunet, Tetsuo Irifune, Hiroaki Ohfuji, Jean-Noel Rouzaud
CARBON 45 (3) 636-648 2007/03
DOI：
10.1016/j.carbon.2006.10.005
ISSN：
0008-6223
-
2743 Effects of Temperature on Fundamental Properties of Advanced Pore-Free SiC : Thermal Shock Fracture Properties
MATSUDA Shinya, TAKAHASHI Manabu, OGI Keiji, MATSUSHITA Masafumi, ONOUE Takushi, HAYASHI Kohei, OHFUJI Hiroaki, OKABE Nagatoshi
The proceedings of the JSME annual meeting 2007 647-648 2007
Publisher:
The Japan Society of Mechanical Engineers
DOI：
10.1299/jsmemecjo.2007.1.0_647
-
Origin of seismic anisotropy in the D '' layer inferred from shear deformation experiments on post-perovskite phase
Daisuke Yamazaki, Takashi Yoshino, Hiroaki Ohfuji, Jun-ichi Ando, Akira Yoneda
EARTH AND PLANETARY SCIENCE LETTERS 252 (3-4) 372-378 2006/12
DOI：
10.1016/j.epsl.2006.10.004
ISSN：
0012-821X
eISSN：
1385-013X
-
Elemental behaviour during the process of corrosion of sekishu glazed roof-tiles affected by Lecidea s.lat. sp (crustose lichen)
K. Watanabe, H. Ohfuji, J. Ando, R. Kitagawa
CLAY MINERALS 41 (4) 819-826 2006/12
DOI：
10.1180/0009855064140221
ISSN：
0009-8558
-
Conditions and mechanism of formation of nano-polycrystalline diamonds on direct transformation from graphite and non-graphitic carbon at high pressure and temperature
H. Sumiya, H. Yusa, T. Inoue, H. Ofuji, T. Irifune
HIGH PRESSURE RESEARCH 26 (2) 63-69 2006/06
DOI：
10.1080/08957950600765863
ISSN：
0895-7959
-
Structure of framboidal pyrite: a single crystal X-ray diffraction study
H Ohfujii, D Rickard, ME Light, MB Hursthouse
EUROPEAN JOURNAL OF MINERALOGY 18 (1) 93-98 2006/01
DOI：
10.1127/0935-1221/2006/0018-0093
ISSN：
0935-1221
-
High resolution transmission electron microscopic study of synthetic nanocrystalline mackinawite
H Ohfuji, D Rickard
EARTH AND PLANETARY SCIENCE LETTERS 241 (1-2) 227-233 2006/01
DOI：
10.1016/j.epsl.2005.10.006
ISSN：
0012-821X
-
Structure of framboidal pyrite: An electron backscatter diffraction study
H Ohfuji, AP Boyle, DJ Prior, D Rickard
AMERICAN MINERALOGIST 90 (11-12) 1693-1704 2005/11
DOI：
10.2138/am.2005.1829
ISSN：
0003-004X
-
Experimental syntheses of framboids - a review
H Ohfuji, D Rickard
EARTH-SCIENCE REVIEWS 71 (3-4) 147-170 2005/08
DOI：
10.1016/j.earscirev.2005.02.001
ISSN：
0012-8252
-
Application of FIB technique to high-pressure mineralogy
Ohfuji Hiroaki, Irifune Tetsuo, Isshiki Maiko, Shizue Sakamoto
Abstracts for Annual Meeting of the Mineralogical Society of Japan 2005 22-22 2005
Publisher:
Japan Association of Mineralogical Sciences
DOI：
10.14824/kobutsu.2005.0.22.0
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Icosahedral domain structure in framboidal pyrite - An example of extraordinary self-organization in micrometer scale -(<Special issue>Mineralogy-Micro to Global- (Part2))
OHFUJI Hiroaki, AKAI Junji
Earth Science (Chikyu Kagaku) 59 (2) 103-110 2005
Publisher:
The Association for the Geological Collaboration in Japan
DOI：
10.15080/agcjchikyukagaku.59.2_103
ISSN：
0366-6611
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Mineralogical and geomicrobiological investigations on groundwater arsenic enrichment in Bangladesh
J Akai, K Izumi, H Fukuhara, H Masuda, S Nakano, T Yoshimura, H Ohfuji, HM Anawar, K Akai
APPLIED GEOCHEMISTRY 19 (2) 215-230 2004/02
DOI：
10.1016/j.apgeochem.2003.09.008
ISSN：
0883-2927
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Icosahedral domain structure of framboidal pyrite
H Ohfuji, J Akai
AMERICAN MINERALOGIST 87 (1) 176-180 2002/01
ISSN：
0003-004X
