博士（工学）, 東北大学

Inorganic materials and properties, 無機構造化学

2025
日本顕微鏡学会, 第40回日本顕微鏡学会論文賞
Extraction of phase information approximating the demagnetization field within a thin-foiled magnet using electron holography observation, Official journal
S. Lee, A. Sato, T. Tamaoka, K. Yubuta, M. Auchi, T. Sasaki, T. Ohkubo, K. Hono, Y. Murakami

2025
日本ホウ素・ホウ化物研究会, 日本ホウ素・ホウ化物研究会賞 学術賞
金属ホウ化物の成長と構造研究への貢献, Japan society
湯葢 邦夫

Preparation, oxidation resistance and electrical resistivity of polycrystalline single phase RuB2 material by arc-melt method
K. Yubuta, K. Kouzu, A. Nomura, S. Okada, T. Hagiwara, T. Kawamata, K. Sugiyama, Y. Murakami, T. Shishido, A. Yoshikawa, T. Mori
J. Jpn. Soc. Powder Powder Metall., 72, 10-15, 2025, Refereed

Evaluating chemical states in a single microcrystal of chromium boride with the micro-focused ion and quantum beams
Y. Guan, X. Zhang, M. Miyamoto, Y. Tsujikawa, K. Yubuta, M. Horio, H. Isshiki, J. Yamaura, T. Abukawa, F. Komori, I. Matsuda
Solid State Sci., 161, 107838-107838, 2025, Refereed

Structural investigation based on the 4D-STEM observation for superstructures of Rh octahedra in Cu3Au/anti-perovskite type ScRh3B0.75 compound
K. Yubuta, M. Shibata, H. Murayama, A. Yasuhara, A. Nomura, K. Sugiyama, T. Shishido
J. Alloys Compd., 1021, 179694-179694, 2025, Refereed
Lead, Corresponding

Vanadium-stabilized MoB nanoparticles enable hydrogen evolution at industry-relevant high current densities
S.B. Kim, J.A. Yapo, A. Yasuhara, K. Yubuta, B.P.T. Fokwa
Small, 2025, 2412693-2412693, 2025, Refereed

Li2ZrN2: Crystal structure, electronic properties, oxidative stability, thermal behavior, and catalytic activity in ammonia decomposition
M. Hojamberdiev, E. M. Heppke, T. Bredow, O. Gómez-Cápiro, K. Yubuta, K. Teshima, T. M. Ahamad, C. Lorent, S. Berendts, H. Ruland, M. Lerch
Inorg. Chem., 64, 9519-9530, 2025, Refereed

Structure and magnetic properties of nanocompsite Fe-Pt-B ternary alloys
D. Ma, L. Cheng, Y. Zhu, Y. Li, Y. Wang, K. Yubuta, W. Zhang, L. Zhang
J. Mater. Res. Technol., 36, 8935-8941, 2025, Refereed

Juniperus pseudosabina extract-mediated green synthesis of zinc oxide artichoke-like structures for antibacterial applications
Z. Kurbanova, S. I. A. Pereira, A. S. S. Sousa, C. Piccirillo, U. Shaislamov, K. Yubuta, K. Teshima, T. Eitinger, M. Hojamberdiev
J. Clean. Prod., 514, 145785-145785, 2025, Refereed

Selective synthesis of β-TaON: The critical influence of oxygen partial pressure in ammonolysis
M. Hojamberdiev, R. Vargas, L. Madriz, D. Nematov, U. Shaislamov, H. Wagata, Y. Kubota, K. Yubuta, K. Teshima, N. Matsushita
Dalton Trans., 54, 11193-11206, 2025, Refereed

Cr5B3 with the Shastry–Sutherland lattices
M. Tokuda, K. Yubuta, T. Shishido, K. Sugiyama
Acta Cryst., E81, 748-752, 2025, Refereed

The critical behavior of magnetization near the curie temperature in highly spin-polarized Heusler alloy Co2TiGa0.3Sn0.7
H. Aoshima, I. Shigeta, A. Nomura, K. Yubuta, T. Yamauchi, R. Y. Umetsu, T. Kanomata, M. Hiroi
IEEE Trans. Magn., 60, 4100305-4100305, 2024, Refereed

Fermi edge of semimetallic borophane sheets and its reduction by a porous structure
X. Zhang, M. Miyamoto, M. Yuan, Y. Tsujikawa, K. Yamaguchi, M. Horio, K. Ozawa, K. Yubuta, T. Kondo, I. Matsuda
J. Phys. Chem. Lett., 15, 9349-9355, 2024, Refereed

Revisiting ordered antifluorite-type Li14Cr2N8O: Synthesis, crystal structure, theoretical perspectives, and catalytic activity for ammonia decomposition
M. Hojamberdiev, E. M. Heppke, T. Bredow, O. Gómez-Cápiro, K. Yubuta, K. Teshima, T. M. Ahamad, C. Lorent, J. A. Baldauf, H. Ruland, R. Pöttgen, M. Lerch
Chem. Mater., 36, 9980-9990, 2024, Refereed

Phase stability of solid solution La1-xRxRh3B (R = Gd, Lu and Sc) compounds with cubic anti-perovskite type structure
K. Yubuta, A. Nomura, K. Kouzu, T. Mori, S. Okada, T. Shishido
Solid State Sci., 158, 107731-107731, 2024, Refereed
Lead, Corresponding

Syntheses and some properties of solid solution Yb(Al,T)B4 (T = Mo or W) compounds
K. Kouzu, S. Okada, T. Hagiwara, A. Nomura, K. Yubuta, T. Mori, T. Shishido, A. Yoshikawa
Solid State Sci., 158, 107735-107735, 2024, Refereed

A new oF-type elemental boron phase synthesized by the rapid quenching -Search for semiconducting quasicrystal-
K. Yubuta, A. Yasuhara, A. Yamano, T. Hiroto, W. Hayami, J. T. Okada, K. Sugiyama, N. Uemura, K. Kimura
16th International Conference on Quasicrystals (ICQ16)

In -situ TEM/STEM observation of microstructural changes of HPT-processed p-type skutterudite
Haruka Murayama, Kohei Sato, Wakaba Yamamoto, Akira Yasuhara, Vilma Bursikova, Gerda Rogl, Peter F. Rogl, Kunio Yubuta
41st International Conference on Thermoelectrics (& 7th Asian Conference on Thermoelectrics)

Vanadium-stabilized MoB Nanoparticles for Enhanced Hydrogen Evolution at High Current Densities
Sang Bum Kim, Johan Yapo, Akira Yasuhara, Kunio Yubuta, Boniface Fokwa
2025 TMS Annual Meeting & Exhibition

Anisotropic Dielectric Properties of a Free-Standing Beta-Gallium Oxide (100) Crystal in the Visible to THz Ranges
O. Maruyama, T. Unuma, H. Toyota, A. Kato, K. Yubuta, T. Sugawara, M. Ishikawa
9th STI-Gigaku2024

Millimeter-scale growth of YCrB4 single crystals and observation of the metallic state by Angle resolved Photoelectron Spectroscopy
X. Zhang, Y. Tsujikawa, M. Miyamoto, K. Yamaguchi, M. Horio, M. Yuan, K. Ozawa, K. Yubuta, T. Kondo, I. Matsuda
The 10th International Symposium on Surface Science (ISSS-10)

A new of-type elemental boron phase synthesized by the rapid quenching -search for semiconducting quasicrystal-
K. Yubuta, A. Yasuhara, A. Yamano, T. Hiroto, J. T. Okada, K. Sugiyama, K. Kimura
22nd International Symposium on Boron, Borides and Related Materials