Effect of Non-Stoichiometry on Magnetocaloric Properties of HoB2 Gas-Atomized Particles Reviewed International journal Open Access

Takafumi D. Yamamoto, Hiroyuki Takeya, Pedro Baptista de Castro, Akiko T. Saito, Kensei Terashima, Takenori Numazawa, Yoshihiko Takano

IEEE Transactions on Magnetics   Vol. 58 ( 6 )   2022.4

Magnetocaloric particles of the Laves phase compound HoAl2 prepared by electrode induction melting gas atomization Reviewed International journal Open Access

Takafumi D. Yamamoto, Hiroyuki Takeya, Akiko T. Saito, Kensei Terashima, Takenori Numazawa, Yoshihiko Takano

Journal of Magnetism and Magnetic Materials   Vol. 547 ( 168906 )   2022.4

Al substitution effect on magnetic properties of magnetocaloric material HoB2 Reviewed International journal

S. Iwasaki, T. D. Yamamoto, P. B. Castro, K. Terashima, H. Takeya, Y. Takano

Solid State Communications   Vol. 342 ( 114616 )   2022.2

Gas-atomized particles of giant magnetocaloric compound HoB2 for magnetic hydrogen liquefiers Reviewed International journal Open Access

Takafumi D. Yamamoto, Hiroyuki Takeya, Akiko T. Saito, Kensei Terashima, Pedro Baptista de Castro, Takenori Numazawa, Yoshihiko Takano

Applied Physics A: Materials Science & Processing   Vol. 127 ( 4 ) page： 301   2021.4

Adiabatic temperature change in ErAl2/metal PIT wires: A practical method for estimating the magnetocaloric response of magnetocaloric composites Reviewed International journal Open Access

Takafumi D. Yamamoto, Hiroyuki Takeya, Akiko T. Saito, Kensei Terashima, Takenori Numazawa, Yoshihiko Takano

Journal of Magnetism and Magnetic Materials   Vol. 513 ( 167207 )   2020.11

Magnetic entropy change of ErAl2 magnetocaloric wires fabricated by a powder-in-tube method Reviewed International journal Open Access

Takafumi D Yamamoto, Hiroyuki Takeya, Suguru Iwasaki, Kensei Terashima, Pedro Baptista de Castro, Takenori Numazawa and Yoshihiko Takano

Journal of Physics D: Applied Physics   Vol. 53 ( 9 ) page： 095004   2019.12

常磁性物質CaRuO3における局所歪みがもたらす強磁性クラスターの直接観測 Reviewed

山本 貴史, 戸田 康介, 寺崎 一郎

SPring-8/SACLA 利用研究成果集   Vol. 7 ( 2 ) page： 212 - 215   2019.8

Dynamical coupling of dilute magnetic impurities with quantum spin liquid state in the S=3/2 dimer compound Ba3ZnRu2O9 Reviewed International journal Open Access

Takafumi D Yamamoto, Hiroki Taniguchi and Ichiro Terasaki

Journal of Physics: Condensed Matter   Vol. 30 ( 35 ) page： 355801   2018.8

Magneto-thermopower in the Weak Ferromagnetic Oxide CaRu0.8Sc0.2O3: An Experimental Test for the Kelvin Formula in a Magnetic Material Reviewed International journal Open Access

Takafumi D. Yamamoto, Hiroki Taniguchi, Yukio Yasui, Satoshi Iguchi, Takahiko Sasaki, Ichiro Terasaki

Journal of the Physical Society of Japan   Vol. 86 ( 10 ) page： 104707   2017.9

Ferromagnetic Cluster Glass Phase Embedded in a Paramagnetic and Metallic Host in Non-Uniform Magnetic System CaRu1-xScxO3 Reviewed International journal Open Access

Takafumi D. Yamamoto, Atsuhiro Kotani, Hiroshi Nakajima, Ryuji Okazaki, Hiroki Taniguchi, Shigeo Mori, Ichiro Terasaki

Journal of the Physical Society of Japan   Vol. 85 ( 3 ) page： 034711   2016.2

Non-uniform Magnetic System Driven by Non-magnetic Ion Substitution in CaRu1-xScxO3: Two-Component Analysis Reviewed International journal Open Access

Takafumi D. Yamamoto, Ryuji Okazaki, Hiroki Taniguchi, Ichiro Terasaki

Journal of the Physical Society of Japan   Vol. 84 ( 1 ) page： 014708   2014.12

Interplay among spin, orbital, and lattice degrees of freedom in the magnetocaloric compound HoB2 Reviewed International journal

Noriki Terada, Simon R. Larsen, Takafumi D. Yamamoto, Daisuke Okuyama, Hironori Nakao, Ginga Kitahara, Shuki Torii, Hiraku Saito, Taro Nakajima, Osamu Sakai, Hiroaki Mamiya, Kensei Terashima, Hiroyuki Takeya, Yoshihiko Takano, Hideaki Kitazawa

Physical Review B   Vol. 113 ( 22 )   2026.6

Design Principles of Magnetism in Tsai-Type Hypermaterials: Long-Range Magnetic Order in Quasicrystals and Approximant Crystals Reviewed International journal Open Access

Farid Labib, Takafumi D. Yamamoto, Asuka Ishikawa, Ryuji Tamura

MATERIALS TRANSACTIONS   Vol. 67 ( 5 ) page： 574 - 591   2026.4

Valence Electronic States of Magnetic Au-Al-Tb Quasicrystal Approximants Studied by Soft and Hard X-ray Electron Spectroscopies Reviewed International journal Open Access

Goro Nozue, Hidenori Fujiwara, Satoru Hamamoto, Mai Sakaguchi, Yuto Torii, Takuya D. Nakamura, Nonoka U. Sakamoto, Takayuki Kiss, Masaki Oura, Kojiro Mimura, Kotaro Higashi, Naomi Kawamura, Arata Tanaka, Asuka Ishikawa, Takafumi D. Yamamoto, Ryuji Tamura, Akira Sekiyama

MATERIALS TRANSACTIONS   Vol. 67 ( 5 ) page： 631 - 637   2026.4

Orbital-Dependent Pseudogap Structure of an Al-Pd-Ru Quasicrystal Probed by X-ray Absorption and Core-Level Photoemission Spectroscopy Reviewed International journal Open Access

Nonoka U. Sakamoto, Hidenori Fujiwara, Takuya D. Nakamura, Kenshin Okazaki, Goro Nozue, Takayuki Kiss, Yasumasa Takagi, Souta Tanaka, Yutaka Iwasaki, Yasuhiro Niwa, Asuka Ishikawa, Takafumi D. Yamamoto, Ryuji Tamura, Akira Yasui, Kiyofumi Nitta, Satoru Hamamoto, Masaki Oura, Akira Sekiyama

MATERIALS TRANSACTIONS   Vol. 67 ( 5 ) page： 626 - 630   2026.4

Enhancing hydrogen permeation barrier performance of ErCo2 magnetic refrigeration materials via surface oxide layer formation Reviewed International journal Open Access

Y. Xu, K. Oyoshi, H. Yoshikawa, H. Takeya, H. Amekura, T. D. Yamamoto, Y. Matsushita, A. A. Belik, M. Tanaka, A. T. Saito, K. Kamiya, Y. Takeda

Nature Communications   Vol. 17 ( 4952 )   2026.4

Pressure-induced anomalous enhancement in the superconducting critical temperature of the transition metal chalcogenides Ta2PdS6 and Ta2PdSe6 Reviewed International journal

Ryo Matsumoto, Akitoshi Nakano, Takafumi D. Yamamoto, Kensei Terashima, Kazuki Yamane, Masahiro Ohkuma, Ichiro Terasaki, Yoshihiko Takano

Physical Review B   Vol. 112 ( 9 )   2025.9

Crystal Structure and Physical Properties of Au4Al-Type Suboxides in the Ti–Rh–Si–O and Ti–Ir–Si–O Systems Reviewed International journal Open Access

Zhijun Li, Xun Kang, Xuan Liang, Alexei A. Belik, Masao Arai, Kazunari Yamaura, Rintaro Oshikiri, Asuka Ishikawa, Takafumi D. Yamamoto, Shintaro Suzuki, Ryuji Tamura

INORGANIC CHEMISTRY   Vol. 64 ( 10 ) page： 5004 - 5013   2025.3

High-pressure effects on the crystal structure and critical temperature in superconducting NbB2 and stabilized MoB2 Reviewed International journal

Superconductor Science and Technology   Vol. 38 ( 3 )   2025.2

Comparative study of ferromagnetism in non-Heisenberg 1/1 and 2/1 quasicrystal approximants Reviewed International journal

Farid Labib, Takafumi D. Yamamoto, Asuka Ishikawa, Ryuji Tamura

Physical Review B   Vol. 109 ( 17 )   2024.3

Experimental exploration of ErB2 and SHAP analysis on a machine-learned model of magnetocaloric materials for materials design Reviewed International journal Open Access

Kensei Terashima, Pedro Baptista de Castro, Akiko Takahashi Saito, Takafumi D Yamamoto, Ryo Matsumoto, Hiroyuki Takeya, Yoshihiko Takano

Science and Technology of Advanced Materials: Methods   Vol. 3 ( 1 )   2023.6

Magnetic Refrigerant Materials for Hydrogen Liquefaction by Active Magnetic Regenerative Refrigeration Reviewed

Akiko T. SAITO, Hiroyuki TAKEYA, Takafumi D. YAMAMOTO, Koji KAMIYA, Koichi MATSUMOTO, Takenori NUMAZAWA

TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)   Vol. 58 ( 2 ) page： 51 - 57   2023.3

Crystal electric field level scheme leading to giant magnetocaloric effect for hydrogen liquefaction Reviewed International journal Open Access

Noriki Terada, Hiroaki Mamiya, Hiraku Saito, Taro Nakajima, Takafumi D. Yamamoto, Kensei Terashima, Hiroyuki Takeya, Osamu Sakai, Shinichi Itoh, Yoshihiko Takano, Masashi Hase, Hideaki Kitazawa

Communications Materials   Vol. 4 ( 13 )   2023.2

Neural networks for a quick access to a digital twin of scanning physical property measurements Reviewed International journal Open Access

Kensei Terashima, Pedro Baptista de Castro, Miren Garbiñe Esparza Echevarria, Ryo Matsumoto, Takafumi D. Yamamoto, Akiko T. Saito, Hiroyuki Takeya, Yoshihiko Takano

Digital Discovery   Vol. 2   page： 339 - 345   2023.1

High-Pressure Synthesis of Superconducting Sn3S4 Using a Diamond Anvil Cell with a Boron-Doped Diamond Heater Reviewed International journal Open Access

R. Matsumoto, K. Terashima, S. Nakano, K. Nakamura, S. Yamamoto, T. D. Yamamoto, T. Ishikawa, S. Adachi, T. Irifune, M. Imai, Y. Takano

INORGANIC CHEMISTRY   Vol. 61 ( 10 ) page： 4476 - 4483   2022.3

Enhancement of giant refrigerant capacity in Ho1-xGdxB2 alloys (0.1 ≤ x ≤ 0.4) Reviewed International journal Open Access

P. B. Castro, K. Terashima, T. D. Yamamoto, S. Iwasaki, A. T. Saito, R. Matsumoto, S. Adachi, Y. Saito, M. ElMassalami, H. Takeya, Y. Takano

Journal of Alloys and Compounds   Vol. 865   page： 158881   2021.6

Effect of Dy substitution in the giant magnetocaloric properties of HoB2 Reviewed International journal Open Access

Pedro Baptista de Castro;Kensei Terashima;Takafumi D. Yamamoto;Suguru Iwasaki;Ryo Matsumoto;Shintaro Adachi;Yoshito Saito;Hiroyuki Takeya;Yoshihiko Takano

Science and Technology of Advanced Materials   Vol. 21 ( 1 ) page： 849 - 855   2021.1

Relationship between magnetic ordering and gigantic magnetocaloric effect in HoB2 studied by neutron diffraction experiment Reviewed International journal

N. Terada, K. Terashima, P. B. Castro, C. Colin, H. Mamiya, T. D. Yamamoto, H. Takeya, O. Sakai, Y. Takano, H. Kitazawa

Physical Review B   Vol. 102 ( 9 ) page： 094435   2020.9

Demonstration of electric double layer gating under high pressure by the development of field-effect diamond anvil cell Reviewed International journal Open Access

Shintaro Adachi, Ryo Matsumoto, Sayaka Yamamoto, Takafumi D. Yamamoto, Kensei Terashima, Yoshito Saito, Miren Esparza Echevarria, Pedro Baptista de Castro, Peng Song, Suguru Iwasaki, Hiroyuki Takeya, Yoshihiko Takano

Applied Physics Letters   Vol. 116 ( 22 ) page： 223506   2020.6

Machine-learning-guided discovery of the gigantic magnetocaloric effect in HoB2 near the hydrogen liquefaction temperature Reviewed International journal Open Access

P. B. Castro, K. Terashima, T. D Yamamoto, Z. Hou, S. Iwasaki, R. Matsumoto, S. Adachi, Y. Saito, P. Song, H. Takeya, Y. Takano

npg asia materials   Vol. 12   page： 35   2020.5

Impurity-Induced Spin-State Crossover in La0.8Sr0.2Co1-xAlxO3 Reviewed International journal Open Access

Ichiro Terasaki, Masamichi Ikuta, Takafumi D. Yamamoto, Hiroki Taniguchi

Crystals   Vol. 8 ( 11 ) page： 411   2018.10

Photo-induced change of dielectric response in BaCoSiO4 stuffed tridymite Reviewed International journal

Hiroki Taniguchi, Hiroki Moriwake, Akihide Kuwabara, Takuma Okamura, Takafumi Yamamoto, Ryuji Okazaki, Mitsuru Itoh, Ichiro Terasaki

Journal of Applied Physics   Vol. 115 ( 16 ) page： 164103   2014.4