論文

• Takehiro Koike, Hena Das, Kengo Oka, Yoshihiro Kusano, Fernando Cubillas, Francisco B. Bojorqez, Victor Emmanuel Alvarez-Montano, Shigekazu Ito, Kei Shigematsu, Hayato Togano, Ikuya Yamada, Hiroki Ishibashi, Kubota Yoshiki, Shigeo Mori, Noboru Kimizuka, Masaki Azuma. Pressure-Induced YbFe2O4-Type to Spinel Structural Change of InGaMgO4, Solids, vol. 5, no. 3, pp. 422-433, Aug. 2024.
• Qiu min Liu, Hena Das, Takumi Nishikubo, Yuki Sakai, Ko Mibu, Tomoko Onoue, Takateru Kawakami, Tetsu Watanuki, Akihiko Machida, Xubin Ye, Jianhong Dai, Zhao Pan, Lei Hu, Satoshi Nakano, Masayuki Fukuda, Shiori Kihara, Koomok Lee, Takehiro Koike, Youwen Long, Masaki Azum. ressure Induced Amorphization of Pb²⁺ and Pb⁴⁺ in Perovskite PbFeO₃, Chemistry of Materials, 36, 1899-1907, Feb. 2024.
• Haoting Zhao, Zhao Pan, Xi Shen, Jianfa Zhao, Dabiao Lu, Jie Zhang, Zhiwei Hu, Chang-Yang Kuo, Chien-Te Chen, Ting-Shan Chan, Christoph J. Sahle, Cheng Dong, Takumi Nishikubo, Takehiro Koike, Zun-Yi Deng, Jiawang Hong, Runze Yu, * Pu Yu, Masaki Azuma, Changqing Jin, Youwen Long. Antiferroelectricity-Induced Negative Thermal Expansion inDouble Perovskite Pb₂CoMoO₆, Small, 20, 2, 2305219, Sept. 2023.
• Masayuki Fukuda, Hidenobu Murata, Takumi Nishikubo, Qiumin Liu, Koomok Lee, Takehiro Koike, Yuma Takahashi, Saori I. Kawaguchi, Naohisa Hirao, Hiroshi Funakubo, Masaki Azuma. Suppression of Pressure-Induced Phase Transitions in a Monoclinically Distorted LiNbO₃-Type CuNbO₃ by Preference for a CuO₃ Triangular Coordination Environment, Inorganic Chemistry, 61, 32, 12719-12725, Aug. 2022.
• Takehiro Koike, Takumi Nishikubo, Yuki Sakai, Hirofumi Ishii, Masaki Azuma. Negative thermal expansion in PbTiO₃-type perovskites oxide Bi_0.5+xNa_0.5−xVO₃, Journal of the Ceramic Society of Japan , 130, 8, 691-695, Aug. 2022.
• Shiori Kihara, Yuki Sakai, Shogo Wakazaki, Takumi Nishikubo, Takehiro Koike, Ko Mibu, Hongwu Yu, Yoichi Okimoto, Shin-ya Koshihara, Masaki Azuma. Bi_0.5Pb_0.5FeO₃ with Unusual Pb Charge Disproportionation: Indication of a Systematic Charge Distribution Change in Bi_0.5Pb_0.5MO₃ (M: 3d Transition Metal), Inorganic Chemistry, 61, 32, 12822-12827, Aug. 2022.
• Harry W. T. Morgan, Takafumi Yamamoto, Takumi Nishikubo, Takuya Ohmi, Takehiro Koike, Yuki Sakai, Masaki Azuma, Hirofumi Ishii, Genki Kobayashi, John E. McGrady. Sequential Pressure-Induced B1−B2 Transitions in the AnionOrdered Oxyhydride Ba₂YHO₃, Inorganic Chemistry, 61, 18, 7043-7050, Apr. 2022.  公式リンク  
  
• Zhao Pan, Koike Takehiro, Takumi Nishikubo, Lei Hu, Qiumin Liu, Yuki Sakai, Shogo Kawaguchi, Masaki Azuma. Realization of Negative Thermal Expansion in Lead-Free Bi_0.5K_0.5VO₃ by the Suppression of Tetragonality, Inorganic Chemistry, 61, 8, 3730–3735, Feb. 2022.

国内会議発表 (査読有り)

• 小池 剛大, 西久保 匠, 酒井 雄樹, 東 正樹. K₂NiF₄型化合物Sr₂CrO₄・Sr₂CoO₄の高圧合成と熱膨張評価, 第62回セラミックス基礎科学討論会, 2024.
• 小池 剛大, 西久保 匠, 酒井 雄樹, 東 正樹. K₂NiF₄型化合物Sr₂CrO₄・Sr₂CoO₄の高圧合成と熱膨張評価, 第62回セラミックス基礎科学討論会, 2024.
• Koomok Lee, Hena Das, Yuki Sakai, Takumi Nishikubo, Kei Shigematsu, Daiki Ono, Takehiro Koike, Naomi Kawamura, Masaichiro Mizumaki, Naoki Ishimatsu, Masaki Azuma. Emergence of weak ferromagnetism in High Spin Co³⁺ substituted BiFeO3, The 22nd Japan-Korea-Taiwan Symposium on Strongly Correlated Electron Systems (JKT22), 2024.
• 三宅 潤, 小池 剛大, 西久保 匠, 酒井 雄樹, 東 正樹. 非晶質前駆体を用いたK₂NiF₄型負熱膨張材料の合成および探索, 粉体粉末冶金協会2023年度秋季大会, 2023.
• 小池 剛大, 東 正樹, 西久保 匠, 酒井 雄樹. PbTiO₃ 型ペロブスカイト酸化物Bi_0.5+xNa_0.5-xVO₃の負熱膨張, 粉体粉末冶金春季大会, 2022.
• 小池 剛大, 西久保 匠, 酒井 雄樹, 東 正樹. PbTiO₃ 型ペロブスカイト酸化物Bi_0.5+xNa_0.5-xVO₃の負熱膨張, 日本セラミックス協会第35回秋季シンポジウム, 2022.

国内会議発表 (査読なし・不明)

• Koomok Lee, Hena Das, Yuki Sakai, Takumi Nishikubo, Kei Shigematsu, Daiki Ono, Takehiro Koike, Naomi Kawamura, Masaichiro Mizumaki, Naoki Ishimatsu, Masaki Azuma. Material Design for Low Power Consumption Multiferroic Memory using High Spin Co³⁺ substituted BiFeO3, 第15回在日科協合同分科会, 2024.

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