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Comparison of Jc Characteristics among (Ba,Na)Fe2As2 Wires and Tapes Fabricated by Different Methods
Tamegai, T., Sakagami, R., Ito, T., Takinoiri, K., Kikuchi, A., Yamamoto, M.
IEEE Transactions on Applied Superconductivity 35 (5) 2025
DOI：
10.1109/TASC.2024.3513284
ISSN：
1558-2515 1051-8223
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Evolution of critical current density in CaKFe4As4 with La-doping
Chen, Y., Wang, C., Zu, Y., Kobayashi, Y., Ichinose, A., Sakagami, R., Tamegai, T.
Superconductor Science and Technology 38 (1) 2025
DOI：
10.1088/1361-6668/ad8e00
ISSN：
1361-6668 0953-2048
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Suppression of the sausaging effect in (Ba,Na)Fe2As2 round wires by using Ag1−Sn /Cu double sheath
Ryosuke Sakagami, Takeru Sasaki, Takamasa Ito, Tsuyoshi Tamegai, Hideki Kajitani, Satoshi Awaji
Physica C: Superconductivity and its Applications 624 2024/09
DOI：
10.1016/j.physc.2024.1354555
ISSN：
0921-4534
-
Effects of 2.6-GeV U ion irradiation on the superconductivity of the kagome superconductors CsV3Sb5 and Cs(V0.93Nb0.07)3Sb5
Peer-reviewed
Chunlei Wang, Lubin Wang, Yuki Hirota, Wenjie Li, Ryosuke Sakagami, Yongkai Li, Ataru Ichinose, Xiaolei Yi, Yangsong Chen, Cheng Yu, Zhiwei Wang, Tsuyoshi Tamegai
Physical Review B 110 (5) 054520-1-054520-9 2024/08/26
Publisher:
American Physical Society (APS)
DOI：
10.1103/PhysRevB.110.054520
ISSN：
2469-9950
eISSN：
2469-9969
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Vortex penetration along twin boundaries in pristine and proton-irradiated FeSe
Tong Ren, Yue Sun, Francesco Laviano, Ryousuke Sakagami, Zhi Xiang Shi, Tsuyoshi Tamegai
Physical Review Materials 8 (8) 2024/08/21
DOI：
10.1103/PhysRevMaterials.8.084806
ISSN：
2475-9953
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Crossover between Anomalous Peak Effects Induced by Splayed and Tilted Columnar Defects in Ba0.6K0.4Fe2As2
Kanta Kato, Ryosuke Sakagami, Satoru Okayasu, Ataru Ichinose, Tsuyoshi Tamegai
Journal of the Physical Society of Japan 93 (7) 2024/07/15
Publisher:
Physical Society of Japan
DOI：
10.7566/JPSJ.93.074704
ISSN：
0031-9015
eISSN：
1347-4073
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Peak effects in the kagome superconductors CsV3Sb5 and Cs(V0.93Nb0.07)3Sb5
Wang, C., Hirota, Y., Wang, L., Sakagami, R., Li, Y., Yi, X., Li, W., Chen, Y., Yu, C., Wang, Z., Tamegai, T.
Physical Review B 109 (2) 2024/01/29
DOI：
10.1103/PhysRevB.109.024514
ISSN：
2469-9969 2469-9950
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Bulk 122-Type Iron-Based Superconductors Sintered under High Pressure
Tamegai, T., Wu, W.X., Yu, C., Sakagami, R.
IEEE Transactions on Applied Superconductivity 34 (3) 2024
DOI：
10.1109/TASC.2023.3347683
ISSN：
1558-2515 1051-8223
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Thermal Transport Properties of a Mixed Anion Layered Compound, Polycrystalline LaCu1-δS0.5Se0.5O (δ = 0.01)
Azuma, N., Sawada, H., Ito, H., Sakagami, R., Tanaka, Y., Fujioka, T., Matoba, M., Kamihara, Y.
Korean Journal of Materials Research 34 (10) 2024
DOI：
10.3740/MRSK.2024.34.10.464
ISSN：
1225-0562
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Ferromagnetic levitation and harmonic trapping of a milligram-scale yttrium iron garnet sphere
Fuwa, M., Sakagami, R., Tamegai, T.
Physical Review A 108 (6) 2023/12/18
DOI：
10.1103/PhysRevA.108.063511
ISSN：
2469-9934 2469-9926
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Peak effects induced by particle irradiations in 2H-NbSe2
Wenjie Li, Sunseng Pyon, Akiyoshi Yagi, Cheng Yu, Ryosuke Sakagami, Ataru Ichinose, Satoru Okayasu, Tsuyoshi Tamegai
Superconductor Science and Technology 36 (11) 2023/11/01
DOI：
10.1088/1361-6668/acfa7b
ISSN：
0953-2048
eISSN：
1361-6668
-
Record-high critical current density in (Ba,Na)Fe2As2 round wire suitable for high-field applications
Pyon, S., Ito, T., Sasaki, T., Sakagami, R., Tamegai, T., Awaji, S., Kajitani, H.
Physica C: Superconductivity and its Applications 615 2023
DOI：
10.1016/j.physc.2023.1354354
ISSN：
0921-4534
-
X-ray Characterizations of Iron-based Superconductor Round Wires with Large Critical Current Density
T. Tamegai, S. Pyon, T. Sasaki, T. Ito, R. Sakagami, S. Awaji, H. Kajitani
Journal of Physics: Conference Series 2545 (1) 2023
DOI：
10.1088/1742-6596/2545/1/012011
ISSN：
1742-6588
eISSN：
1742-6596
-
Fabrication of multi-filament(Ba,A)Fe2As2 (A: Na, K) HIP round wires and a small superconducting coil
Sunseng Pyon, Takamasa Ito, Ryosuke Sakagami, Tsuyoshi Tamegai, Satoshi Awaji, Hijiri Kito, Shigeyuki Ishida, Hiroshi Eisaki, Yoshiyuki Yoshida, Hideki Kajitani
Superconductor Science and Technology 36 (1) 2023/01/01
DOI：
10.1088/1361-6668/aca726
ISSN：
0953-2048
eISSN：
1361-6668
-
Thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn2As2
Ryosuke Sakagami, Yosuke Goto, Harunari Karimata, Nobuhiko Azuma, Michitaro Yamaguchi, Suguru Iwasaki, Manami Nakanishi, Itsuki Kitawaki, Yoshikazu Mizuguchi, Masanori Matoba, Yoichi Kamihara
Japanese Journal of Applied Physics 60 (3) 035511-035511 2021/03/01
DOI：
10.35848/1347-4065/abe449
ISSN：
0021-4922
eISSN：
1347-4065
-
複合アニオン層状化合物LaCu[1-δ]S[0.5]Se[0.5]O (δ~0.01)多結晶縮退半導体の光学バンドギャップ内構造—In-gap-states of a Mixed Anion Layered Compound, Polycrystalline LaCu[1-δ]S[0.5]Se[0.5]O (δ~0.01) as a Degenerate Semiconductor
Peer-reviewed
東 伸彦, 澤田 拓希, 伊藤 大平, 坂上 良介, 的場 正憲, 臼井 秀知, 神原 陽一
材料の科学と工学 : 日本材料科学会誌 58 (2) 64-68 2021
Publisher:
日本材料科学会
ISSN：
1347-4774
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Investigations of arsenic substitution on the physical, electrical and magnetic properties of Bi-2212 superconductors
Labban, W., Malaeb, W., Habanjar, K., Hassan, M.S., Sakagami, R., Kamihara, Y., Awad, R.
Phase Transitions 93 (10-11) 1055-1066 2020/11
DOI：
10.1080/01411594.2020.1837371
ISSN：
1029-0338 0141-1594
eISSN：
1029-0338
-
Superconducting properties of a mixed anion layered compound, Ca and F co-doped LaFeAsO with Tc = 31.5 K
Ryosuke Sakagami
Japanese Journal of Applied Physics 58 (3) 2019/02/13
DOI：
10.7567/1347-4065/aafec4
ISSN：
0021-4922
eISSN：
1347-4065
-
Synthesis, Crystal Structure, and Thermoelectric Properties of Layered Antimony Selenides REOSbSe2 (RE = La, Ce)
Ryosuke Sakagami
Journal of the Physical Society of Japan 87 (7) 2018/06/12
DOI：
10.7566/JPSJ.87.074703
ISSN：
0031-9015
eISSN：
1347-4073
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SnAs層を含む六方晶層状化合物EuSn2As2の多結晶合成
Ryosuke Sakagami
材料の科学と工学 2018/04/20
https://orcid.org/0000-0002-4020-2067