論文 - 山本 剛久
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A technique to modify the photoluminescence intensity of β-Ga2O3 polycrystals using an electric field during sintering 査読有り
R. ONO, A. Kodaira, T. TOKUNAGA, H. YOSHIDA, T. YAMAMOTO
Journal of Luminescence 254 巻 頁: 119508 2022年11月
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Shell-like structure to limit further densification formed during flash sintering under alternative current electric field for 8mol%Y2O3-doped ZrO2 査読有り
M. Seko, K. Hattori, Y. Ishino, A. Kodaira, T. Tokunaga, T. Yamamoto
Journal of the Ceramic Society of Japan 130 巻 ( 11 ) 頁: 895 - 898 2022年11月
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Microcrack healing in single-crystal cubic zirconia by thermal annealing 招待有り 査読有り
S. Kayukawa, Y. Katsuyama, A. Kodaira, T. Tokunaga, K. Morita, A. Nakamura, K. Higuchi, T. Yamamoto
Journal of the European Ceramic Society 2022年10月
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Flash self-joining of Y-TZP ceramics assisted with an ACelectric field 査読有り
K. Nambu, T. Kitaoka, K. Morita, K. Soga, T. Tokunaga, T. Yamamoto, H. Masuda, H. Yoshida
Journal of the American Ceramic Society 106 巻 頁: 2073 - 2082 2022年10月
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He buffer gas effect on Nd:YAG-PLD growth of EuxY2−xO3 phosphor thin films 招待有り 査読有り
S. Suzuki, T. Dazai, K. Kawashima, T. Tokunaga, T. Yamamoto, R. Takahashi
ACS Applied Electronics Materials 4 巻 頁: 4419 - 4426 2022年8月
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Microstructure and tensile strength of electrodeposited Fe-rich bcc FeCoNi medium-entropy alloys 査読有り
A. Watanabe,T. Yamamoto,R. Miyamoto, Y. Takigawa
Materials Science and Technology 39 巻 ( 15 ) 頁: 2028 - 2034 2022年8月
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Effect of electron beam irradiation in gas atmosphere during ETEM 査読有り
T. Tokunaga, T. Kawakami, K. Higuchi, Y. Yamamoto, T. Yamamoto
Micron 158 巻 頁: 103289 2022年7月
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Variation of photoluminescence intensity depending on the timing of electric field application during isothermal flash sintering for 3mol%Y2O3-ZrO2 polycrystal 査読有り
A. Itoh, T. Tokunaga, A. Kodaira, H. Yoshida, T. Yamamoto
Ceramics International 48 巻 頁: 28712 - 28717 2022年6月
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Tensile strength of nanocrystalline FeCoNi medium-entropy alloy fabrication using electrodeposition 査読有り
A. Watanabe, T. Yamamoto, Y. Takigawa
Scientific Reports 12 巻 頁: 12076 2022年6月
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Estimation of excess oxygen-vacancy formed by direct-current electric field during flash sintering for 3 mol%–10 mol% Y2O3-doped ZrO2 査読有り
N. Morisaki, T. Tokunaga, K. Kobayashi, A. Kodaira, T. Yamamoto
Ceramic International 48 巻 頁: 12091 - 12097 2022年5月
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A first attempt of automated shrinkage-rate control flash sintering using a current profile without feedback of shrinkage behavior for 8mol%Y2O3-doped ZrO2 査読有り
M. Koike, Y. Ishino, T. Tokunaga, T. Yamamoto
Journal of the Ceramic Society of Japan 130 巻 ( 4 ) 頁: 327 - 330 2022年4月
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Anelasticity induced by AC flash processing of cubic zirconia 査読有り
H. Masuda, K. Morita, T. Tokunaga, T. Yamamoto, H. Yoshida
Acta Materialia 227 巻 頁: 117704 2022年2月
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Electrode Overvoltage Model for a Flash State of Yttria-Stabilized Zirconia: Validity, Limitation, and Open New Issue 査読有り
K. Kobayashi, T. Yamamoto, K. Morita, T. S. Suzuki
Journal of the Ceramic Society of Japan 130 巻 ( 1 ) 頁: 172 - 179 2022年1月
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Densification of Y2O3 by flash sintering under an AC electric field 査読有り
Kohta Nambu, Koji Morita, Kohei Soga, Takahisa Yamamoto, Hiroshi Masuda, Hidehiro Yoshida
Journal of the European Ceramic Society 42 巻 頁: 567 - 575 2021年11月
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Direct determination of a topmost atomic layer of (100) surfaces on (La0.3Sr0.7)(Al0.65Ta0.35)O3 single crystals annealed in air by high-resolution scanning transmission electron microscopy 査読有り
Y. Tokuda, T. Irimoto, N. Nishikawa, Y. Katsuyama, S. Kobayashi, T. Tokunaga, and T. Yamamoto
Surface and Interface Analysis 54 巻 ( 11 ) 頁: 212 - 217 2021年11月
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Photoluminescence property of quinary Ag-(In,Ga)-(S,Se) quantum dots with a gradient alloy structure for in vivo bioimaging 査読有り
Nurmanita Rismaningsih, Hiroki Yamauchi, Tatsuya Kameyama, Takahisa Yamamoto, Saho Morita, Hiroshi Yukawa, Taro Uematsu, Yoshinobu Baba, Susumu Kuwabata, Tsukasa Torimoto
Journal of Materials Chemistry C 9 巻 ( 37 ) 頁: 12791 - 12801 2021年8月
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Rapid sintering of 3 mol% Y2O3-doped ZrO2 by a combined rapid furnace heating and shrinkage-controlled flash sintering protocol 査読有り
Yuki ISHINO, Kimihiro TAGUCHI, Ayu KODAIRA, Tomoharu TOKUNAGA, Takahisa YAMAMOTO
Journal of the Ceramic Society of Japan 129 巻 ( 8 ) 頁: 551 - 554 2021年8月
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He Buffer Gas for Moderating the Kinetic Energy of Pulsed Laser Deposition Plumes 査読有り
Ryota Takahashi, Takahisa Yamamoto, Mikk Lippmaa
Crystal Growth & Design 21 巻 ( 9 ) 頁: 5017 - 5026 2021年7月
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Near complete densification of flash sintered 8YSZ: controlled shrinkage rate effects 査読有り
Kimihiro TAGUCHI, Yuki ISHINO, Tomoharu TOKUNAGA, Takahisa YAMAMOTO
Journal of the European Ceramic Society 41 巻 ( 8 ) 頁: 4567 - 4571 2021年7月
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Shrinkage rate control during a flash state by current-ramping for 3mol%Y2O3-doped ZrO2 polycrystals 査読有り
Yuki ISHINO, Kimihiro TAGUCHI, Masao KOIKE, Tomoharu TOKUNAGA, Takahisa YAMAMOTO
Journal of the American Ceramic Society 104 巻 ( 10 ) 頁: 4960 - 4967 2021年5月