研究内容
量子論を用いた固体の諸物性に関する基礎的研究を中心に行っています． 特に，原子レベルでの欠陥や添加元素が固体の諸物性に与える影響について， 実験的ならびに計算科学的手法を用いた研究を行っています． 試料の合成に始まり，結晶構造解析，電子状態分析，シンクロトロン放射光を用いた分析にも取り組み， 第一原理計算を用いた解析，機械学習を用いた物質探索も行っています．最近のトピックス
- 有機無機ハイブリッドペロブスカイトの評価
- 希土類フリー蛍光体の開発
- アップコンバージョン型蛍光体における発光機構の解明
- マテリアルズインフォマティクスによる材料開発
- 機械学習分子動力学法による構造相転移機構の解明
- 生体内溶解性材料の開発
シンクロトロン放射光施設（あいちシンクロトロン光センター）での実験風景
量子物性，X線分光，惑星科学，シンクロトロン放射光，第一原理計算，強相関電子系，燃料電池，マルチフェロイック物質，誘電体，希薄磁性体，バイオセラミクス，超伝導，透明導電体，超高圧物性，蛍光体，太陽電池，熱電材料，フォトクロミック物質
最近の学生による国際会議発表
7th ICOM (2024年8月，Becici, Montenegro)でのポスター発表．
11th IWAMSN (2024年9月，Danang, Vietnam)会場にて．
- A. Kishi, R. Wada, N. Shibayama, M. Ikegami, T. Miyasaka, T. Yamamoto, Stabilization of alpha-FAPbI3 Film by Isobutylammonium Chloride Addition, Materials Research Meeting 2025, December 8-13, 2025, Yokohama, Japan
- A. Kishi, R. Wada, N. Shibayama, M. Ikegami, T. Miyasaka, T. Yamamoto, Development of Highly Efficient FAPbI3 Perovskite Solar Cells by the Addition of Isobutylammonium Chloride, 2025 MRS Fall Meeting, November 30 ? December 5, 2025, Boston, USA
- S. Osaki, K. Hoshitani, M. Nakamura, K. Kimura, T. Yamamoto, Evaluation of Predictive Performance by Quantum Circuit Learning for the Mechanical Properties of High Entropy Alloys, 8th International Conference on Advanced Electromaterials, November 25-28, 2025, Jeju, Korea
- Y. Niimiya, S. Hiromoto, T. Yamamoto, Effect of Al Concentration on the Corrosion Behavior of Oxide Film-free Metal Surfaces in Mg Alloys, 8th International Conference on Advanced Electromaterials, November 25-28, 2025, Jeju, Korea
- T. Koikawa, Y. Shimazaki, M. G. Brik, T. Yamamoto, Change in Intensity Distiburion of Up-Conversion Luminescence Spectra of CaIn2O4:Er, 8th International Conference on Advanced Electromaterials, November 25-28, 2025, Jeju, Korea
- S. Osaki, K. Hoshitani, M. Nakamura, K. Kimura, T. Yamamoto, Advantages of Quantum Circuit Learning for the Development of High Entropy Materials, IEEE Internationla Conference on Quantum Computing and Engineering (QCE25), August 31- September 5, 2025, Albuquerque, USA
- A. Kishi, N. Shibayama, M. Ikegami, T. Miyasaka, T. Yamamoto, Improvement of Photoelectric Conversion Efficiency of Perovskite Solar Cells by Surface Modification of Electron Transport Layer, 19th Toin International sympsium on biomedical engineering, Yokohama, Japan, Oct. 2024
- R. Suematsu, H Jinno, D. Kobayashi, K. Hirose, N. Shibayama, M. Ikegami, T. Miyasaka, T. Yamamoto, Degradation Mechanism of FAPbI3 with Dopamine Hydrochloride due to Soft X-ray Irradiation, 19th Toin International sympsium on biomedical engineering, Yokohama, Japan, Oct. 2024
- T. Koikawa, M. G. Brik, T. Yamamoto, Influence of Alkaline-Metals Co-Doing on Luminescence Intensity of Er-Doped Up-Conversion Oxide Phosphors, PRiME204, Honolulu, USA, Oct. 2024
- S. Osaki, H. C. Nguyen, M. G. Brik, T. Yamamoto, Estimation of luminescence properties of red phosphors doped with 3d transition metals by machine learning, 11th International workshop on advanced materials science and nanotechnology, Da Nang, Vietnam, Sep. 2024
- G. Sato, M. Okumura, A. Hirata, and T. Yamamoto, Elucidation of quasicrystal formation mechanism in noble metal doped Zr-Cu metallic glasses by machine learning molecular dynamics simulations, 11th International workshop on advanced materials science and nanotechnology, Da Nang, Vietnam, Sep. 2024
- T. Koikawa,Y. Shimazaki, M. G. Brik, T. Yamamoto, Up-Conversion Luminescence of Ca2SnO4:Er, International Conference on the Physics of Optical Materials & The 4th International Conference on Phosphor Thermometry, Becici, Motenegro, Aug. 2024
- Y. Shimazaki, T. Koikawa, M. G. Brik, T. Yamamoto, Effect of rare earth co-doping on UC luminescence intensity in CaSnO3:Er, International Conference on the Physics of Optical Materials & The 4th International Conference on Phosphor Thermometry, Becici, Motenegro, Aug. 2024
- T. Koikawa, T. Yamamoto, Effect of Na co-doping on the upconversion luminescence intensity of Er-doped CaMoO4, 7th International Symposium on Frontiers in Materials Science, Hsinchu, Taiwan, Jan. 2024
- A. Kishi, T. Yamamoto, Evaluation of alpha-Phase Stability of FACsPbI3 by Ethylammonium Addition, 7th International Symposium on Frontiers in Materials Science, Hsinchu, Taiwan, Jan. 2024
- S. Li, T. Yamamoto, Interface Modification with Guanidinium Chloride in FAPbI3 Based Perovskite Solar Cells, 7th International Symposium on Frontiers in Materials Science, Hsinchu, Taiwan, Jan. 2024
- K. Zhang, T. Yamamoto, Influence of Nicotinamide Addition in FAPbI3 on Its Defect Passivation, 7th International Symposium on Frontiers in Materials Science, Hsinchu, Taiwan, Jan. 2024
- K. Midorikawa, S. Hiromoto, T. Yamamoto, Corrosion evaluation of carbonate apatite-coated pure magnesium by electrochemical measurement, 6th International Symposium on Frontiers in Materials Science, Phu Quoc, Vietnam, Nov. 2022
- F. Samejima, N. Ogi, T. Yamamoto, Influence of co-dopings of alkaline metal ions in Er-doped CaSnO3 on its up-conversion emission intensity, 6th International Symposium on Frontiers in Materials Science, Phu Quoc, Vietnam, Nov. 2022
- R. Oonaga, N. Shibayama, M. Ikegami, T. Miyasaka, Y. Miyazawa, D. Kobayashi, K. Hirose, T. Yamamoto, Stabilization of a-FAPbI3 by addition of dopamine hydrochloride, 6th International Symposium on Frontiers in Materials Science, Phu Quoc, Vietnam, Nov. 2022
過去の国際会議発表
最近の学生による国内学会発表
- S. Osaki, K. Hoshitani, M. Nakamura, K. Kimura, N. Itani, T. Yamamoto, Predictions of the Mechanical Properties of High Entropy Alloys Using Quantum Circuit Learning, 第35回日本MRS年次大会，2025/11/10-12，北九州
- K. Hoshitani, S. Osaki, T. Yamamoto, Phase Classification of High Entropy Perovskites Using Machine Learning, 第35回日本MRS年次大会，2025/11/10-12，北九州
- A. Ichimaru, K. Kakiuchi, S. Osaki, T. Yamamoto, Prediction of Luminescence Intensity of Ca-Al-Zn Oxide Red Phosphors, 第35回日本MRS年次大会，2025/11/10-12，北九州
- 森本拓実，河鰭一彦，山本知之, 尺骨骨折治癒過程における骨伝導音測定による固有振動数の変化, 日本機械学会スポーツ工学・ヒューマンダイナミクス部門講演会2025，2025/11/28-30，京都
- 垣内健太郎，山本知之, Ca-Al-Zn系酸化物赤色蛍光体の発光特性評価, 日本セラミックス協会第38回秋季シンポジウム，2025/9/17-19，群馬
- 鯉川智生, 永田将義, 嶋崎結子, Mikhail G. Brik, 山本知之, Er添加CaSnO3とCaTiO3のアップコンバージョン発光波長分布, 日本セラミックス協会第38回秋季シンポジウム，2025/9/17-19，群馬
- 森本拓実，河鰭一彦，廣田音奏，石川 芽生子，山本知之, 機械学習を用いた骨強度予測モデルの検討, 日本機械学会第37回バイオエンジニアリング講演会，2025/5/24-25，神奈川
- 森本拓実，河鰭一彦，廣田音奏，石川 芽生子，山本知之, 深層学習モデルを用いた骨伝導音測定における固有振動数の推測手法の検討, 第46回バイオメカニズム学術講演会，2025/11/15-16，奈良
- 岸絢那，和田僚平，柴山直之，池上和志，宮坂力，山本知之, 塩化イソブチルアンモニウム添加FAPbI3ペロブスカイト太陽電池の評価, 第86回応用物理学会秋季学術講演会，2025/9/7-10，愛知
- 森本拓実，河鰭一彦，廣田音奏，石川 芽生子，山本知之, 骨伝導音を用いた骨強度測定の新たな評価法の検討, 日本機械学会2025年度年次大会，2025/9-7-10，北海道
- 福田涼介，土井康太郎，廣本祥子，山本知之, 高強度Al合金の局部腐食発生に及ぼすCu, Fe含有金属間化合物の影響, 第72回材料と環境討論会，2025/10/29-31，愛知
- 嶋田翔, 廣本祥子, 山本知之, 炭酸アパタイト被膜の被覆時間が疑似体液中での純 Mg の耐食性に及ぼす影響, 第72回材料と環境討論会，2025/10/29-31，愛知
- 新宮やよい, 廣本祥子, 山本知之, AZ 系 Mg 合金新生面の分極挙動に及ぼす Al 濃度の影響, 日本金属学会第177回秋季講演大会，2025/9/17-19，北海道
- 嶋崎結子，鯉川智生，山本知之, 希土類共添加CaSnO3への炭酸アルカリ金属添加がアップコンバージョン発光特性に及ぼす影響, 日本金属学会第177回秋季講演大会，2025/9/17-19，北海道
- 嶋田翔，廣本祥子，山本知之, TEM観察による純Mg表面での炭酸アパタイト被膜の形成メカニズムの検討, 日本金属学会第177回秋季講演大会，2025/9/17-19，北海道
- 新宮やよい, 廣本祥子, 山本知之, 生理食塩水中でのAZ系Mg合金のAl濃度が新生金属面のアノード分極挙動に及ぼす影響, 材料と環境討論会2025，2025/6/4-6，東京
- 福田涼介，土井康太郎，廣本祥子，山本 知之, Cuを含んだ金属間化合物が及ぼす高強度Al合金の腐食発生への影響, 材料と環境討論会2025，2025/6/4-6，東京
- 嶋田 翔，廣本 祥子，山本 知之， 純Mg表面での炭酸アパタイト被膜の形成メカニズムの検討，2024年9月，大阪大学
- 平野 萌，Zafari Umar, Dilshod Nematov, Amondulloi Burhonzoda，山本 知之， Mn添加RE2MgTiO6の蛍光特性評価，日本金属学会2024年秋期講演大会，2024年9月，大阪大学
- 平石 遥輝，Nguyen Hai Chau，山本 知之， 機械学習によるガーネット型構造化合物の物性値予測，日本金属学会2024年秋期講演大会，2024年9月，大阪大学
- 鯉川 智生，山本 知之，アルカリ金属共添加による Er 添加 CaMoO4のアップコンバージョン発光強度の向上，日本セラミックス協会2024年年会，2024年3月，熊本大学
- S. Tsukazaki, M. Okumura, and T. Yamamoto, Analysis of Phase Transition in CH3NH3PbI3 Perovskites by Molecular Dynamics Simulation, MRS-J，2023年11月, 横浜
- G. Sato, K. Utsugi, M. Okumura, and T. Yamamoto, Machine Learning Molecular Dynamics Simulations of Multi Elemental Metallic Glasses, MRS-J，2023年11月, 横浜
- H. Hiraishi, Nguyen Hai Chau, T. Yamamoto, Critical Temperature Predictions of Superconductors by Machine Learning, MRS-J，2023年11月, 横浜
- K. Utsugi, A. Burhonzoda, Dilshord Nematov and T. Yamamoto, Estimation of the Electoric Structures of Perovskite materials using Machine Learning, MRS-J，2023年11月, 横浜
- 平野 萌, Zafari Umar , Dilshod Nematov, Amondulloi Burhonzoda, 山本 知之，Mn添加RE2MgTiO6ダブルペロブスカイトの蛍光特性評価，日本金属学会2023年秋期講演大会，2023年9月，富山大学
- 宇都木 一輝，山本知之，平田秋彦，Cu-Zr系金属ガラスのAl添加による局所原子配列の変化，日本金属学会2023年秋期講演大会，2023年9月，富山大学
- 鯉川 智生，山本 知之，Er添加シェーライト構造酸化物のアップコンバージョン発光特性評価，日本金属学会2023年秋期講演大会，2023年9月，富山大学
- 佐藤元紀，宇都木一輝，山本知之，機械学習を用いた高エントロピー合金の機械的特性の予測，日本金属学会2023年秋期講演大会，2023年9月，富山大学
- 羽富圭祐，廣本祥子，土井康太郎，山本知之, 水酸/炭酸アパタイト被覆Mg合金の引張り特性に及ぼす培養液浸漬の影響，日本金属学会2023年秋期講演大会，2023年9月，富山大学
- 大長 稜平, 柴山 直之, 池上 正志, 宮坂 力, 宮澤 優, 小林 大輔, 廣瀬 和之, 山本 知之, ドーパミン塩酸塩添加FAPbI3の室温大気中での相安定性向上, 日本応用物理学会春季講演大会，2023年3月，上智大学
- K. Zhang, T. Amma, S. Tsukazaki, R. Kunii and T. Yamamoto, Stabilization of a-FAPbI3 by cation substitution, MRS-J, 2022年12月, 横浜
- K. Utsugi, M. Kubo, H.C. Nguyen, M.G. Brik and T. Yamamoto, Estimation of the Geometrical and Electronic Structures of Zircon-type materials using Machine Learning, MRS-J, 2022年12月, 横浜
- S. Li, S. Tsukazaki, R. Kunii and T. Yamamoto, First-principles molecular dynamics simulations of cation mixed organic-inorganic lead halide perovskites, MRS-J, 2022年12月, 横浜
- M. Ikematsu, K. Utsugi, G. Sato, H.C. Nguyen, and T. Yamamoto, Estimation of the Mechanical Properties of High Entropy Alloys using Machine Learning, MRS-J, 2022年12月, 横浜
- 緑川壱丸，山本知之，廣本祥子，純Mg表面に作製した炭酸アパタイト被膜のキャラクタリゼーション，日本金属学会春季講演大会，2022年3月,北九州国際会議場
過去の国内学会発表
最近の論文発表
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S. Osaki, K. Hoshitani, M. Nakamura, K. Kimura, T. Yamamoto
Efficient Quantum Algorithm for the Design of Complex Materials: Quantum Circuit Learning
Sci. Rep. (2026) in press
https://doi.org/10.1038/s41598-026-43584-8 - Zafari Umar, Oleg Khyzhun, Amondulloi S. Burkhonzoda, Dilshod D. Nematov, Mikhail G. Brik, Tomoyuki Yamamoto, Michal Piasecki
Anion-anion exchange effect on crystal, electronic and mechanical properties of eco-friendly lead-free Cs2SnX6 and CsSnX3 halides when forming Cs2SnX6-xYx and CsSnX3-xYx (X, Y = I, Br, Cl) solid solutions
J. Solid State Chem. 359 (2026) 125968
https://doi.org/10.1016/j.jssc.2026.125968 - Zafari Umar, Oleg Khyzhun, Alexander Platonenko, Tomoyuki Yamamoto, Mikhail G. Brik, Michal Piasecki
Different calculating schemes for evaluating the transition emission energies in a Cr3+-activated KMgF3 phosphor: ΔSCF-DFT approaches
Computational Condensed Matter 47 (2026) e01274
https://doi.org/10.1016/j.cocom.2026.e01274 - Amondulloi Burhonzoda, Dilshod Nematov, Mekhrdod S. Kurboniyon, Makhmadzoir Kayumov, Iskandar Raufov, Mirabbos Hojamberdiev, Kholmirzo Kholmurodov, Tomoyuki Yamamoto
Pressure-induced bandgap engineering, optical and mechanical properties of chlorine-doped CsSnI3: A first-principles roadmap for high-efficiency solar cells
Computational Condensed Matter 46 (2026) e01253
https://doi.org/10.1016/j.cocom.2026.e01253 - Ta Khanh Ly, Hai Chau Nguyen, Tomoyuki Yamamoto
A Causal Inference Approach to Assess the Effects of Atomic Concentration Changes on the Hardness of High-Entropy Alloys
International Conference on Computational Collective Intelligence (2026) 152-166
https://doi.org/10.1007/978-3-032-09318-9_11 - Mekhrdod S. Kurboniyon, Alok M. Srivastava, William W. Beers, William E. Cohen, Mohammad Bagheri, Bibo Lou, Tomoyuki Yamamoto, Mikhail G. Brik, Chong-Geng Ma
First-principles study of thermal quenching mechanism of Mn4+-doped fluoride phosphors: Electronic structure, optical properties and phosphor design principles
Chem. Eng. J. 525 (2025) 170227
https://doi.org/10.1016/j.cej.2025.170227 -
Amondulloi Burhonzoda, Dilshod Nematov, Mekhrdod Kurboniyon, Farhod Shokir, Mirabbos Hojamberdiev, Mikhail G. Brik, Kholmirzo Kholmurodov, Tomoyuki Yamamoto
High-pressure effects on the structural, mechanical, and optoelectronic properties of the lead-free beta-CsSnX3 (X = I, Br, Cl) perovskite: Insights from first principle analyses
Computational Condensed Matter 45 (2025) e01130-e01130
https://doi.org/10.1016/j.cocom.2025.e01130 -
Nguyen Hai Chau and Tomoyuki Yamamoto
Effects of changing atomic concentration of a single element on the yield strength of high-entropy alloys: A causal inference study
Journal of Electronic Materials 54 (2025) 3663-3674
https://doi.org/10.1007/s11664-025-11852-4 -
Zafari Umar, Oleg Khyzhun, Mekhrdod S. Kurboniyon, Tomoyuki Yamamoto, Mikhail G. Brik, Anatoli I. Popov, Michal Piasecki
Electronic structure and energy transitions in oxides and fluorides doped by octahedrally surrounded Cr3+ ions
Opt. Mater. 160 (2025) 116681.
https://doi.org/10.1016/j.optmat.2025.116681 -
Zafari Umar Oleg Khyzhuna, Dilshod D. Nematov, Amondulloi S. Burhonzoda, Mikhail G. Brik, Tomoyuki Yamamoto, Micha? Piasecki
The effect of divalent ions on chemical stability of eco-friendly alpha, gamma and delta phases of CsSnI3
Comp. Condens. Matter 44 (2025) e01062.
https://doi.org/10.1016/j.cocom.2025.e01062 -
Tomoki Koikawa, Tomoyuki Yamamoto
Enhancement of up-conversion luminescence intensity of Er-doped CaMoO4 by K2CO3 addition
Opt. Mater. 163 (2025) 116959.
https://doi.org/10.1016/j.optmat.2025.116959 -
Mekhrdod S. Kurboniyon, Shamsulkhak Nurulkhakov, Bibo Liu, Khaiyom Rahmonov, Alok M. Srivastava, Mikhail G. Brik, Tomoyuki Yamamoto, Chong-Geng Ma
Influence of the First Cation A of A2SiF6:Mn4+ (A = K, Rb, Cs) Phosphors on Their Geometric Structures and the Optical Transition Energies: First Principles Analysis
J. Electron Mater. 54 (2025) 962-969.
https://doi.org/10.1007/s11664-024-11617-5 -
Mekhrdod S. Kurboniyon, Alok M. Srivastava, Bibo Lou, Yang Wang, Dan Zhang, Dzhumakhon M. Sharifov, Dulat H. Daurenbekov, Tomoyuki Yamamoto, Mikhail G. Brik, and Chong-Geng Ma
Effect of Chemical Composition on the Optical Properties of Cr3+ Impurity in A3B5O12 Garnets (A = Lu, Y, Gd, La; B = Al, Ga, Sc)
ACS Appl. Opt. Mater. 3 (2025) 422-430
https://doi.org/10.1021/acsaom.4c00502 -
Dilshod D. Nematov, Amondulloi S. Burkhonzoda, Mekhrdod S. Kurboniyon, Umar Zafari, Kholmirzo T. Kholmurodov, Mikhail G. Brik, Tomoyuki Yamamoto, Farhod Shokir
The Effect of Phase Changes on Optoelectronic Properties of Lead-Free CsSnI3 Perovskites
J. Electron. Mater. 54 (2025) 1634-1644
https://doi.org/10.1007/s11664-024-11683-9 -
Mekhrdod S. Kurboniyon, Alok M. Srivastava, Bibo Lou, Dilshod D. Nematov, Amondulloi Burhonzoda, Tomoyuki Yamamoto, Chong-Geng Ma, and Mikhail G. Brik
Thermal Quenching Mechanism of Mn4+ in Na2SiF6, NaKSiF6, and K2SiF6 Phosphors: Insights from the First-Principles Analysis
Inorg. Chem. 63 (2024) 21212-21221.
https://doi.org/10.1021/acs.inorgchem.4c03589 -
Zafari Umar, Oleg Khyzhun, Mekhrdod S. Kurboniyon, Tomoyuki Yamamoto, Mikhail G. Brik, Mega Novita, Justyna Barzowska, and Michal Piasecki
The Effect of Hydrostatic Pressure on Structure, Crystal-Field Strength, and Emission Properties of Neat and Ni2+-Activated KMgF3
Adv. Theory Simul. 8 (2025) 2400734
https://doi.org/10.1002/adts.202400734 -
Maksym Buryi, Vladimir Babin, Katerina Decka, Katarina Ridzonova, Neda Neykova, Frantisek Hajek, Zhivko Velkov, Zdenek Remes, Robert Tomala, Pawel Socha, Karol Bartosiewicz, Tomas Hostinsky, Petr Mosner, Tomoyuki Yamamoto, Chong-Geng Ma, Mikhail G. Brik
Charge trapping and luminescence of the mixed size CsPbBr3 particles grown in one batch
Opt. Mater. 151 (2024) 115279
https://doi.org/10.1016/j.optmat.2024.115279 -
Zafari Umar, Oleg Khyzhun, Tomoyuki Yamamoto, Piotr Bragiel
Ab initio calculations of two-site occupation for substituting ions in MgTa2O6:Cr3+ phosphor: The geometric and electronic structures and optical transition energies
Opt. Mater. 140 (2024) 115057
https://doi.org/10.1016/j.optmat.2024.115057 -
Kazuma Midorikawa, Sachiko Hiromoto, Tomoyuki Yamamoto
Carbonate content control in carbonate apatite coatings of biodegradable magnesium
Ceramics International 50 (2024) 6784-6792
https://doi.org/10.1016/j.ceramint.2023.12.021 -
First-Principles Calculations of the Electronic Structure and Mechanical Properties of Non-Doped and Cr3+-Doped K2LiAlF6 Under Pressure
Z. Umar, M. S. Kurboniyon, O. Khyzhun, T. Yamamoto, C.-G. Ma, M. G. Brik, M. Piasecki
J. Lumin. 266 (2024) 120278
https://doi.org/10.1016/j.jlumin.2023.120278 -
A New Data Transformation and Resampling Approach for Prediction of Yield Strength of High-Entropy Alloys
N. H. Chau, G. Sato, K. Utsugi, T. Yamamoto
Proceedings of 15th Asian Conference of Intelligent Information and Database Systems, ACIIDS 2023. Lecture Notes in Computer Science, vol 13996. Springer, Singapore
https://doi.org/10.1007/978-981-99-5837-5_1 -
First-principles study of geometric and electronic structures, and optical transition energies of Mn4+ impurity ions: K2SiF6 as a prototype
M. S. Kurboniyon, B. Lou, U. Zafari, F. Rahimi, A. M. Srivastava, T. Yamamoto, M. G. Brik, C-G. Ma
J. Lumin. 263 (2023) 120103
https://doi.org/10.1016/j.jlumin.2023.120103 -
First-principles investigation of divalent ion sensing with cesium lead trihalides
T. Yamamoto, R. Oonaga, H.C. Nguyen, V.H. Vuong, A.T. Nguyen, D.T. Bui, N.N. Hoang, N.D. Nguyen
Opt. Mater.: X 19 (2023) 100253
https://doi.org/10.1016/j.omx.2023.100253 -
Geometrical and electronic structure analysis of Mn-doped CaMO3 (M = Ti, Zr and Sn)
M. S. Kurboniyon, U. Zafari, C.-G. Ma, M. Piasecki, M. G. Brik, T. Yamamoto
Phys. Status Solidi B 260 (2023) 2200575
https://doi.org/10.1002/pssb.202200575 -
Influence of co-doping of divalent ions on the photoluminescence intensity of Mn4+ doped CaAl12O19
U. Zafari, M. Sagayama, M. Subhoni A. M. Srivastava, W. W. Beers, W. Cohen, C.-G. Ma, M. Piasecki, M. G. Brik, T. Yamamoto
Opt. Mater.: X 16 (2022) 100197.
https://doi.org/10.1016/j.omx.2022.100197 -
Support Vector Machine-Based Phase Prediction of Multi-principal Element Alloys
H.C. Nguyen, M. Kubo, V. H. Le, and T. Yamamoto
Vietnam J. Comp. Sci. (2022)
https://dx.doi.org/10.1142/S2196888822500312 -
Influence of Isostatic Pressure on the Elastic and Electronic Properties of K2SiF6:Mn4+
M. Subhoni U. Zafari, C.-G. Ma, A. M. Srivastava, W. W. Beers, W. Cohen, M. G. Brik, M. Piasecki, T. Yamamoto
Materials 15 (2022) 613.
https://doi.org/10.3390/ma15020613 -
Theoretical and Experimental Investigations of Mn4+ Site Occupation in CaAl12O19
M. Sagayama, M. Subhoni U. Zafari, A. M. Srivastava, W. W. Beers, W. Cohen, M. G. Brik, T. Yamamoto
ECS J. Solid State Sci. Tech. 10 (2021) 076004.
http://dx.doi.org/10.1149/2162-8777/ac13df -
Evaluation of Damage Coefficient for Minority-Carrier Diffusion Length of Triple-Cation Perovskite Solar Cells under 1-MeV Electron Irradiation for Space Applications
Y. Miyazawa, G. Kim, A. Ishii, M. Ikegami, T. Miyasaka, Y. Suzuki, T. Yamamoto, T. Ohshima, S. Kanaya, H. Toyota, K. Hirose
J. Phys. Chem. C 125 (2021) 13131-13137.
http://dx.doi.org/10.1021/acs.jpcc.1c01590 -
Origin of room-temperature ferromagnetism in Co-doped CeO2
K. Tarui, T. Oomori, Y. Ito, and T. Yamamoto
Physica B 619 (2021) 413158.
https://doi.org/10.1016/j.physb.2021.413158 -
First principles analysis of crystal structure, electronic and optical properties of CsSnI3-xBrx perovskite for photoelectric applications
D. D. Nematov, A. S. Burhonzoda, M. A. Khusenov, Kh. T. Kholmurodov, and T. Yamamoto
J. Surf. Investigation: X-ray, Synchrotron and Neutron Techniques 15 (2021) 532-536.
http://dx.doi.org/10.1134/S1027451021030149 -
Unusual hydrogen implanted gold with lattice contraction at increased hydrogen content
K. T. Nguyen, V. H. Vuong, T. N. Nguyen, T. T. Nguyen, T. Yamamoto, N. N. Hoang
Nature Comm. 12 (2021) 1560.
http://dx.doi.org/10.1038/s41467-021-21842-9 -
First-principles investigations of geometrical and electronic structures of Mn4+ doped A2SiF6 (A= K, Rb, Cs) red phosphors
M. Subhoni, U. Zafari, A. M. Srivastava, W. W. Beers, W. Cohen, M. G. Brik, and T. Yamamoto
Opt. Mat. 115 (2021) 110986.
http://dx.doi.org/10.1016/j.optmat.2021.110986 - 電気炉（ボックス型×3，管状炉×2）
- マグネトロンスパッタ装置
- ドラフト
- 粉末X線回折装置(XRD)
- X線光電子分光装置(XPS)
- 紫外可視分光光度計(UV-Vis)
- 蛍光分光光度計(PL)
- 並列計算機
- 河鰭 一彦 先生（関西学院大学）：バイオセラミックス，バイオメカニクス
- 宮坂 力 先生（桐蔭横浜大学）：有機無機ハイブリッド太陽電池
- 池上 和志 先生（桐蔭横浜大学）：有機無機ハイブリッド太陽電池
- 廣瀬 和之 先生（宇宙科学研究所/JAXA）：SiO2/Si界面，絶縁破壊，太陽電池
- Prof. Mikhail G. BRIK, Tartu Univ., Estonia: Optical materials
- Prof. Nam-Nhat HOANG, VNU-UET, Vietnam: Functional materials
- Prof. Hai-Chau NGUYEN, VNU-UET, Vietnam: Materials Informatics
- Prof. Kholmirzo T. KHOLMURODOV, JINR, Russia: MD simulation for functional materials
- Dr. Mekhrdod S. KURBONIYON, Academy of Sciences of Republic of Tajikistan, Tajikistan - Rare-earth free phosphor
- Dr. Umar ZAFARI, Academy of Sciences of Republic of Tajikistan, Tajikistan - Rare-earth free phosphor
- Dr. Amondulloi BURKHONZODA, Academy of Sciences of Republic of Tajikistan, Tajikistan - Rare-earth free phosphor
- Dr. Dilshod NEMATOV, Academy of Sciences of Republic of Tajikistan, Tajikistan - Rare-earth free phosphor
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