Hajime Yamamoto
IMRAM, Tohoku University
Original Papers
< 2024 >
O 50. "ZnVO3: An ilmenite-type vanadium oxide hosting robust V–V dimers"
Hajime Yamamoto*, Takumi Nishikubo, Shintaro Kobayashi, Kazuki Takahashi, Masaki Azuma, Shogo Kawaguchi, and Tadashi Abukawa. Dalton Transactions, 53, 16195-16201 (2024). 10.1039/D4DT02239D
O 49. "Continuous structural phase transition and antiferromagnetic order in ilmenite-type NiVO3"
Hajime Yamamoto*, Osamu Ikeda, Takashi Honda, Kenta Kimura, Takuya Aoyama, Kenya Ohgushi, Akio Suzuki, Kenji Ishii, Daiju Matsumura, Takuya Tsuji, Shintaro Kobayashi, Shogo Kawaguchi, Matteo d’Astuto, and Tadashi Abukawa
Physical Review Materials, 8, 094402 (2024). 10.1103/PhysRevMaterials.8.094402
48. "High-Pressure Route to Irreversible Thermochromic Materials"
Masaya Oshita, Hidenobu Murata, Hajime Yamamo, Shintaro Kobayashi, Shogo Kawaguchi, Isaac Oda-Bayliss, Wencong Wang, Shunsuke Yagi, and Kenta Kimura
Journal of Physical Chemistry C, 128, 044705 (2024).
47. "Crystal structures and superconducting properties of metallic double-chain based cuprate Pr2Ba4Cu7O15-d"
Masahide Hagawa, Michiaki Matsukawa, Kodai Niinuma , Reiya Kudo , Yuto Mizusihima, Naohisa Kawarada, Hajime Yamamoto, Kazuhiro Sano, Yoshiaki Ono, Takahiko Sasaki
Journal of the Physical Society of Japan, 93, 044705 (2024).
<解説記事・紀要>
"イルメナイト型バナジウム酸化物の構造物性研究"
山本孟, 日本結晶学会誌, 66巻4号（12月号）
ミニ特集「高圧を利用した新物質合成・プロセス開発と結晶学」
"バナジウム3d軌道の特性を生かした新奇物性の開拓"
山本孟, まぐね, Vol.19, No.4 (2024).
（ジョン・B・グッドイナフによる固体物理化学特集）
"超高圧合成法を駆使した革新的な電子機能物質の創成"
山本孟, 高圧力の科学と技術 , 33巻2号133-138
< 2023 >
O 46. "Magnetic Field-Induced Phase Transition in Ilmenite-Type CoVO3"
Hajime Yamamoto, Hung-Cheng Wu, Atsushi Miyake, Masashi Tokunaga, Akio Suzuki, Takashi Honda, and Hiroyuki Kimura
Applied Physics Letters 123, 132404 (2023). 10.1063/5.0169708
O 45. "Single Crystal Growth of Ilmenite-type MnVO3 by Solid-State Recrystallization"
Sachiko Kamiyama, Terutoshi Sakakura, Hiroyuki Kimura, Hajime Sagayama, Shunji Kishimoto, Ikuya Yamada, and Hajime Yamamoto*
Crystal Growth & Design 23, 4, 2295-2300 (2023). 10.1021/acs.cgd.2c01324
44. "High-pressure syntheses, crystal structures, and magnetic properties of novel quadruple perovskite oxides LaMn3Ru2Mn2O12 and LaMn3Ru2Fe2O12"
Amane Morimura, Sachiko Kamiyama, Naoaki Hayashi, Hajime Yamamoto, Ikuya Yamada
Journal of Alloys and Compounds, online. (2023).
43. "Structural, optical, and photocatalytic properties of rare-earth free double-perovskite oxides Ba2Bi3+(Bi5+
1−2xSb5+2x)O6"
Dayal Chandra Roy∗, Michiaki Matsukawa∗, Minami Arakida, Hanako Sakou, Kazuto Hata, Kazume Nishidate, Sumio Aisawa, Hajime Yamamoto and Akiyuki Matsushi
Solid State Communications, In press. (2023).
42. "Development of Electrochemical Anion Doping Technique for Expansion of Functional Material Exploration"
Takuya Katsumata, Hajime Yamamoto, Yuta Kimura, Koji Amezawa, Ryotaro Aso, Soichi Kikkawa, Seiji Yamazoe, Takashi Nakamura
Advanced Functional Materials, Published online (2023).
41. "Switching of Intermetallic Charge Transfer and Negative Thermal Expansion in Mn-Doped CaCu3Fe4O12"
Ikuya Yamada, Manami Goto, Yuta Kato, Yuta Kizawa, Hajime Yamamoto, Shintaro Kobayashi, Shogo Kawaguchi, Yuki Mori, Kenta Kimura
Journal of Physical Chemistry Part C, In press. (2023).
40. "Paramagnon dispersion and damping in doped NaxCa2-xCuO2Cl2"
Blair W. Lebert, Benjamin Bacq-Labreuil, Mark P. M. Dean, Kari Ruotsalainen, Alessandro Nicolaou, Simo Huotari, Ikuya Yamada, Hajime Yamamoto, Masaki Azuma, Nicholas B. Brookes, Flora Yakhou, Hu Miao, David Santos-Cottin, Benjamin Lenz, Silke Biermann, Matteo d'Astuto
Physical Review B 108 (2023).
39. "Compaction of α”-Fe16N2 particles by high-pressure treatment at several gigapascals"
K. Oka*, T. Ogawa*, H. Yamamoto, C. Sakaguchi, R. Gallage, N. Kobayashi, M. Azuma
Scripta Materialia 229, 115390 (2023).
38. "Synergistic Effect between Fe4+ and Co4+ on Oxygen Evolution Reaction Catalysis for CaFe1–xCoxO3"
I. Yamada, A. Tanaka, S. Oda, Y. Okazaki, F. Toda, Y. Kato, Y. Kizawa, M. Oshita, M. Goto, A. Morimura, A. Ochi, K. Toda, W. Wang, H. Yamamoto, H. Ikeno S. Yagi
Materials Transactions, In press. (2023).
<解説記事・紀要>
"新結晶・新物質「イルメナイト型バナジウム酸化物におけるV-V二量体の形成」"
固体物理 58巻2号45-53 (2023年2月号） 山本孟
"Division Topics「結晶中に形成されるカチオン二量体」"
化学と工業 Vol.76 No.3 202 (2023年3月号) 山本孟
< 2022 >
O 37. "Large negative thermal expansion in ilmenite-type vanadate ceramic"
Hajime Yamamoto*, Sachiko Kamiyama, Takumi Nishikubo, Masaki Azuma, Ikuya Yamada and Hiroyuki Kimura
Applied Physics Letters 120, 201901 (2022) 10.1063/5.0092198
O 36. "V-V Dimerization and Magnetic State of Cobalt Ions in Ilmenite-type CoVO3"
Sachiko Kamiyama, Ikuya Yamada, Masayuki Fukuda, Yuichi Okazaki, Takashi Nakamura, Takumi Nishikubo, Masaki Azuma, Hiroyuki Kimura, and Hajime Yamamoto*
Inorganic Chemistry 61, 20, 7841–7846 (2022) 10.1021/acs.inorgchem.2c00382
35. "Bulk charge density wave and electron-phonon coupling in superconducting copper oxychlorides"
L. Chaix, B. Lebert, H. Miao, A. Nicolaou, F. Yakhou, H. Cercellier, S. Grenier, N. B. Brookes, A. Sulpice, S. Tsutsui, A. Bossak, L. Paolasini, D. Santos-Cottin, H. Yamamoto, I. Yamada, M. Azuma, T. Nishikubo, T. Yamamoto, M. Katsumata, M. P. M. Dean, and M. d’Astuto
Physical Review Research, 4, 033004 (2022).
34. "Quest for Colossal Negative Thermal Expansion Materials"
Masaki AZUMA, Kengo OKA, Hajime YAMAMOTO, Yuki SAKAI
Journal of the Japan Society of Powder and Powder Metallurgy 69(8) 356-361 (2022).
<解説記事・紀要>
"岡山県産鉱物「逸見石」が示す量子物性 -放射光X線精密結晶構造解析でひも解く磁性の起源- "
山本孟、坂倉輝俊、木村宏之
日本結晶学会誌 64(4) 2022年12月
"Crystal Structure and Magnetism of Natural Mineral Henmilite from Fuka Mine, Okayama Prefecture"
Hajime Yamamoto, Terutoshi Sakakura, Hiroyuki Kimura
Photon Factory Activity Report (2022)
< 2021 >
O 33. "Cation Dimerization in a 3d1 Honeycomb Lattice System"
Hajime Yamamoto, Sachiko Kamiyama, Ikuya Yamada and Hiroyuki Kimura
Journal of the American Chemical Society, 144, 3, 1082-1086 (2022) 10.1021/jacs.1c10977
O 32. "Quantum Spin Fluctuations and Hydrogen Bond Network in Natural Mineral Henmilite"
Hajime Yamamoto, Terutoshi Sakakura, Harald O. Jeschke, Noriyuki Kabeya, Kanata Hayashi, Yuya Ishikawa, Yutaka Fujii, Shunji Kishimoto, Hajime Sagayama, Masaki Azuma, Kei Shigematsu, Akira Ochiai, Yukio Noda, and Hiroyuki Kimura
Physical Review Materials 5, 104405 (2021) 10.1103/PhysRevMaterials.5.104405
O 31. "Crystal Structures and Electronic States of High-Pressure Synthesized (1-x)PbVO3-xBiCrO3 Solid Solutions"
Hajime Yamamoto, Haruna Aizawa, Ikuya Yamada, Kaoru Toda, Atsushi Tanaka, Masaki Azuma, Yuki Sakai, Takumi Nishikubo, and Hiroyuki Kimura
Journal of Asian Ceramic Societies, 9 (3), 1147-1153 (2021) 10.1080/21870764.2021.1944556
30. "Metamagnetic Behavior in Quadruple Perovskite Oxide"
Yuichi Okazaki, Yuta Kato, Yuta Kizawa, Seiji Oda, Kai Uemura, Takuya Nishio, Fuminari Fujii, Shintaro Fujinari, Masaya Kinoshita, Takao Odake, Hayato Togano, Takashi Kamegawa, Shogo Kawaguchi, Hajime Yamamoto, Hidekazu Ikeno, Shunsuke Yagi, Kouhei Wada, Kyo-Hoon Ahn, Atsushi Hariki, Ikuya Yamada.
Inorganic Chemistry 60, 10, 7023–7030 (2021) 10.1021/acs.inorgchem.0c03432
29. "Functional Transition Metal Perovskite Oxides with 6s2 Lone Pair Activity Stabilized by High-Pressure Synthesis"
Masaki Azuma, Hajime Hojo, Kengo Oka, Hajime Yamamoto, Keisuke Shimizu, Kei Shigematsu, Yuki Sakai
Annual Review of Materials Research, Volume 51 (2021) 10.1146/annurev-matsci-080819-011831
28. "Polarization Rotation at Morphotropic Phase Boundary in New Lead-Free Na1/2Bi1/2V1-xTixO3 Piezoceramics"
Zhao Pan, Mao-Hua Zhang, Takumi Nishikubo, Yuki Sakai, Hajime Yamamoto, Hajime Hojo, Masayuki Fukuda, Lei Hu, Hayato Ishizaki, Satoru Kaneko, Shogo Kawaguchi, Jurij Koruza, Jurgen Rodel, Masaki Azuma
ACS Applied Materials & Interfaces, ACS Appl. Mater. Interfaces 13, 4, 5208–5215 (2021) 10.1021/acsami.0c18482
<解説記事・紀要>
"Control of Polar Structure by Intermetallic Charge Transfer in Perovskite-Type Oxides"
Hajime Yamamoto, and Hiroyuki Kimura
Photon Factory Activity Report (2021)
< 2020 >
O 27. "Reversible Thermally Controlled Spontaneous Magnetization Switching in Perovskite-type Manganite"
Hajime Yamamoto, Satoru Sekikawa, Haruka Taniguchi, Michiaki Matsukawa, Kei Shigematsu, Takashi Honda, Kunihiko Yamauchi, Kazutaka Ikeda, Toshiya Otomo, Terutoshi Sakakura, Masaki Azuma, Shigeki Nimori, Yukio Noda, and Hiroyuki Kimura
Applied Physics Letters, 117, 112404 (2020). 10.1063/5.0017506
O 26. "Emergence of a Cubic Phase Stabilized by Intermetallic Charge Transfer in (1-x)PbVO3-xBiCoO3 Solid Solutions"
Hajime Yamamoto, Kaoru Toda, Yuki Sakai, Takumi Nishikubo, Ikuya Yamada, Kei Shigematsu, Masaki Azuma, Hajime Sagayama, Masaichiro Mizumaki, Kiyofumi Nitta, and Hiroyuki Kimura
Chemistry of Materials 32, 6892-6897 (2020). 10.1021/acs.chemmater.0c01934
25. "Stable electric polarization switching accompanied by magnetization reversal in B-site-substituted multiferroic BiFe0.9Co0.1O3 thin films"
Kei Shigematsu, Haruki Shimizu, Marin Katsumata, Keisuke Shimizu, Hajime Yamamoto, Ko Mibu and Masaki Azuma
Applied Physics Express 13 071001 (2020).
24. "Negative Thermal Expansion in Lead-Free La-Substituted Bi0.5Na0.5VO3"
Hayato Ishizaki, Yuki Sakai, Takumi Nishikubo, Zhao Pan, Kengo Oka, Hajime Yamamoto, and Masaki Azuma
Chemistry of Materials 32, 11, 4832–4837 (2020).
23. "Doping-induced in-plane anisotropy of bond-stretching phonon softening in oxychloride Ca2−xCuO2Cl2 compounds"
Blair W. Lebert, Hajime Yamamoto, Masaki Azuma, Rolf Heid, Satoshi Tsutsui, Hiroshi Uchiyama, Alfred Q. R. Baron, Benoît Baptiste, and Matteo d'Astuto
Physical Review B 101, 020506(R) (2020).
22. "Development of Giant Negative Thermal-Expansion Materials Utilizing Pressure-Induced Phase Transitions"
Masaki Azuma, Yuki Sakai, Takumi Nishikubo, Kengo Oka, Hajime Yamamoto
The Review of High Pressure Science and Technology 30(3) 187-194 (2020).
< 2019 >
O 21. "Stability of Polar Structure in Filling-Controlled Giant Tetragonal Perovskite Oxide PbVO3"
Hajime Yamamoto, Takahiro Ogata, Yuki Sakai, and Masaki Azuma
Inorganic Chemistry 58, 4, 2755–2760
20. ”Robust Giant Tetragonal Distortion Coupled with High-Spin Co3+ in Electron-Doped BiCoO3”
Hayato Ishizaki, Hajime Yamamoto, Takumi Nishikubo, Yuki Sakai, Shogo Kawaguchi, Keisuke Yokoyama, Yoichi Okimoto, Shin-ya Koshihara, Takafumi Yamamoto, and Masaki Azuma
Inorganic Chemistry 58, 23, 16059–16064
19. "Large Negative Thermal Expansion Induced by the Synergistic Effects of Ferroelectrostriction and Spin-Crossover in PbTiO3-Based Perovskites"
Zhao Pan, Jun Chen, Runze Yu, Lokanath Patra, Ponniah Ravindran, Andrea Sanson, Ruggero Milazzo, Alberto Carnera, Lei Hu, Lu Wang, Hajime Yamamoto, Yang Ren, Qingzhen Huang, Yuki Sakai, Takumi Nishikubo, Takahiro Ogata, Xi'an Fan, Yawei Li, Guangqiang Li, Hajime Hojo, Masaki Azuma, and Xianran Xing
Chemistry of Materials 31, 4, 1296–1303
18. "Direct observation of magnetization reversal by electric field at room temperature in Co-substituted bismuth ferrite thin film"
Keisuke Shimizu, Ryo Kawabe, Hajime Hojo, Haruki Shimizu, Hajime Yamamoto, Marin Katsumata, Kei Shigematsu, Ko Mibu, Yu Kumagai, Fumiyasu Oba, and Masaki Azuma
Nano Letters 19, 3, 1767–1773
17. "Melting of dxy orbital ordering accompanied by suppression of giant tetragonal distortion and insulator to metal transition in Cr substituted PbVO3"
Takahiro Ogata, Yuki Sakai, Hajime Yamamoto, Satyanarayan Patel, Peter Keil, Jurij Koruza, Shogo Kawaguchi, Zhao Pan, Takumi Nishikubo, Jürgen Rödel, and Masaki Azuma
Chemistry of Materials 31, 4, 1352–1358
< 2018 >
O 16. "Na1/2Bi1/2VO3 and K1/2Bi1/2VO3: New Lead-Free Tetragonal Perovskites with Moderate c/a Ratios"
Hajime Yamamoto, Takahiro Ogata, Satyanarayan Patel, Jurij Koruza, Jürgen Rödel, Atanu Paul, Tanusri Saha-Dasgupta, Yuki Sakai, Mitsuru Itoh, Masaki Azuma
Chemistry of Materials 30(19) 6728-6736
O 15. "Colossal Negative Thermal Expansion in Electron‐Doped PbVO3 Perovskites"
Hajime Yamamoto, Takashi Imai, Yuki Sakai, Masaki Azuma
Angewandte Chemie International Edition 57 8170-8173
14. "Magnetic ordering in multiferroic SmMn2O5 and GdMn2O5 studied by resonant soft x-ray scattering"
Y. Ishii, S. Horio, H. Yamamoto, Y. Noda, H. Nakao, Y. Murakami, and H. Kimura
Physical Review B 98 174428
13. "Development of Bismuth Ferrite as a Piezoelectric and Multiferroic Material by Cobalt Substitution"
Hajime Hojo, Kengo Oka, Keisuke Shimizu, Hajime Yamamoto, Ryo Kawabe, Masaki Azuma
Advanced Materials 30(33) 1705665
12. "Large spontaneous polarization in polar perovskites of PbTiO3–Bi(Zn1/2Ti1/2)O3"
Zhao Pan, Xingxing Jiang, Jun Chen, Lei Hu, Hajime Yamamoto, Linxing Zhang, Longlong Fan, Xi'an Fan, Yawei Li, Guangqiang Li, Yang Ren, Zheshuai Lin, Masaki Azuma, and Xianran Xing
Inorganic Chemistry Frontiers 5 1277-1281
11. "Room temperature ferromagnetism in BiFe1-xMnxO3 thin film induced by spin-structure manipulation"
Kei Shigematsu, Takeshi Asakura, Hajime Yamamoto, Keisuke Shimizu, Marin Katsumata, Haruki Shimizu, Yuki Sakai, Hajime Hojo, Ko Mibu, Masaki Azuma
Applied Physics Letters 112 192905
<解説記事・紀要>
"巨大負熱膨張への挑戦 -電子ドープ強誘電体PbVO3-"
化学 73巻10号68-69 (2018） 東正樹、山本孟
< 2017 >
O 10. "Electric field-induced reorientation of magnetic easy plane in a Co-substituted BiFeO3 single crystal"
Hajime Yamamoto, Yuki Sakai, Kei Shigematsu, Takuya Aoyama, Takuya Kimura, Masaki Azuma
Inorganic Chemistry 56(24) 15171-15177
9. "Colossal Volume Contraction in Strong Polar Perovskites of Pb(Ti,V)O3"
Zhao Pan, Jun Chen, Xingxing Jiang, Lei Hu, Runze Yu, Hajime Yamamoto, Takahiro Ogata, Yuichiro Hattori, Fangmin Guo, Xian Fan, Yawei Li, Guangqiang Li, Huazhi Gu, Yang Ren, Zheshuai Lin, Masaki Azuma, and Xianran Xing
Journal of the American Chemical Society 139(42) 14865-14868
8. "A-Site and B-Site Charge Orderings in an s–d Level Controlled Perovskite Oxide PbCoO3"
Yuki Sakai, Junye Yang, Runze Yu, Hajime Hojo, Ikuya Yamada, Ping Miao, Sanghyun Lee, Shuki Torii, Takashi Kamiyama, Marjana Ležaić, Gustav Bihlmayer, Masaichiro Mizumaki, Jun Komiyama, Takashi Mizokawa, Hajime Yamamoto, Takumi Nishikubo, Yuichiro Hattori, Kengo Oka, Yunyu Yin, Jianhong Dai, Wenmin Li, Shigenori Ueda, Akihisa Aimi, Daisuke Mori, Yoshiyuki Inaguma, Zhiwei Hu, Takayuki Uozumi, Changqing Jin, Youwen Long, Masaki Azuma
Journal of the American Chemical Society 139(12) 4574-4581
7. "Hydrothermal synthesis and crystal structure of a new lithium copper bismuth oxide, LiCuBiO4"
Nobuhiro Kumada, Ayumi Nakamura, Akira Miura, Takahiro Takei, Masaki Azuma, Hajime Yamamoto, Eisuke Magome, Chikako Moriyoshi, Yoshihiro Kuroiwa
Journal of Solid State Chemistry 245 30-33
< 2016 >
O 6. "Spin Structure Change in Co-Substituted BiFeO3"
Hajime Yamamoto, Takumi Kihara, Kengo Oka, Masashi Tokunaga, Ko Mibu, Masaki Azuma
Journal of Physical Society of Japan 85 064704
5. "Ferromagnetism at Room Temperature Induced by Spin Structure Change in BiFe1-xCoxO3 Thin Films"
Hajime Hojo, Ryo Kawabe, Keisuke Shimizu, Hajime Yamamoto, Ko Mibu, Kartik Samanta, Tanusri Saha-Dasgupta, Masaki Azuma
Advanced Materials 29 1603131
4. "Giant Polarization and High Temperature Monoclinic Phase in a Lead-Free Perovskite of Bi(Zn0.5Ti0.5)O3-BiFeO3"
Zhao Pan, Jun Chen, Runze Yu, Hajime Yamamoto, Yangchun Rong, Lei Hu, Qiang Li, Kun Lin, Li You, Kun Zhao, Longlong Fan, Yang Ren, Kenichi Kato, Masaki Azuma, and Xianran Xing
Inorganic Chemistry 55(19) 9513-9516
3. "High-Temperature Monoclinic Cc Phase with Reduced c/a Ratio in Bi-based Perovskite Compound Bi2ZnTi1-xMnxO6"
Runze Yu, Narumi Matsuda, Ken Tominaga, Keisuke Shimizu, Hajime Hojo, Yuki Sakai, Hajime Yamamoto, Kengo Oka, Masaki Azuma
Inorganic Chemistry 55(12) 6124-6129
2. "Critical current density of superconductors with different fractal dimensions"
Toshio Naito, Hajime Yamamoto, Kensuke Konishi, Kazuya Kubo, Takayoshi Nakamura, Hiroyuki Mayama
OAT, Advanced Materials Science 1(1) 15-21
< 2013 >
1. "Magnetic ordering of spin systems having fractal dimensions Experimental study"
Toshio Naito, Hajime Yamamoto, Kenta Okuda, Kensuke Konishi, Hiroyuki Mayama, Daisuke Yamaguchi, Satoshi Koizumi, Kazuya Kubo, and Takayoshi Nakamura
The European Physical Journal B 86 410