Hirayama Naomi 平山尚美

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HIRAYAMA Naomi 平山尚美

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Researcher Number	70581750
Other IDs
Affiliation (Current)	2025: 島根大学, 学術研究院理工学系, 准教授
Affiliation (based on the past Project Information) *help	2025: 島根大学, 学術研究院理工学系, 准教授 2020 – 2023: 島根大学, 学術研究院理工学系, 准教授 2019: 東京大学, 物性研究所, 特任研究員 2017 – 2018: 大阪大学, 理学研究科, 特任研究員(常勤) 2016: 首都大学東京, 理工学研究科, 特任助教 2015: 東京理科大学, 基礎工学部, 嘱託助教 2014 – 2015: 東京理科大学, 基礎工学部, 助教
Review Section/Research Field	Principal Investigator Basic Section 21050:Electric and electronic materials-related / Basic Section 36020:Energy-related chemistry / Energy engineering / Power engineering/Power conversion/Electric machinery Except Principal Investigator Medium-sized Section 21:Electrical and electronic engineering and related fields / Power engineering/Power conversion/Electric machinery
Keywords	Principal Investigator 第一原理計算 / 不純物ドープ / 熱電効果 / マグネシウムシリサイド / 熱電物質 / 機械学習 / 格子欠陥 / 熱電発電 / 有効質量 / 化学圧力 … More / ゼーベック係数 / シリサイド / 熱電材料 / FLAPW法 / 不純物サイト / 不純物添加 / 再生可能エネルギー / 半導体物性 / 物性理論 / 熱電輸送係数 / 有限温度 / 界面 / 等電子不純物 / ストロンチウムシリサイド / ボルツマン方程式 / ハイブリッド法 / KKR-CPA法 / 機械学習ポテンシャル / カーボンナノチューブ / 不純物ドーピング / 全電子計算 / 熱電輸送現象 / 不純物効果 / KKRグリーン関数法 / 擬ポテンシャル法 / 格子定数 / 不純物ドープ効果 … More Except Principal Investigator 半導体材料 / IV族クラスレート / 環境半導体 / マグネシウム・シリサイド / 熱電変換 / 排熱発電 / 熱電発電 / 電気エネルギー工学 Less

Creation and characterization of new group IV clathrate material with direct gap
- Principal Investigator
  
  久米徹二
- Project Period (FY)
  2025 – 2028
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 21:Electrical and electronic engineering and related fields
- Research Institution
  Gifu University
第一原理計算と機械学習力場による加速分子動力学法を用いた熱電変換材料の理論設計Principal Investigator
- Principal Investigator
  
  平山尚美
- Project Period (FY)
  2023 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 21050:Electric and electronic materials-related
- Research Institution
  Shimane University
Theoretical study of impurity-doped Mg2Si thermoelectric materials using first-principles calculations and machine learning techniquePrincipal Investigator
- Principal Investigator
  
  Hirayama Naomi
- Project Period (FY)
  2020 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 36020:Energy-related chemistry
- Research Institution
  Shimane University
Thermoelectric calculation at finite temperature: towards environmentally benign thermoelectric materialsPrincipal Investigator
- Principal Investigator
  
  Hirayama Naomi
- Project Period (FY)
  2017 – 2019
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Energy engineering
- Research Institution
  The University of Tokyo
  Osaka University
Theoretical study of structural, electronic, and thermoelectric properties of silicide materialsPrincipal Investigator
- Principal Investigator
  
  Hirayama Naomi
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Power engineering/Power conversion/Electric machinery
- Research Institution
  Tokyo Metropolitan University
  Tokyo University of Science
Development of thermoelectric waste-heat-recovery power-generation system adaptable to automotive applications
- Principal Investigator
  
  IIDA TSUTOMU
- Project Period (FY)
  2012 – 2015
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Power engineering/Power conversion/Electric machinery
- Research Institution
  Tokyo University of Science

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 Other

All Journal Article Presentation

[Journal Article] First-principles study of the effects of native defects on the thermoelectric properties of narrow-gap semiconducting α-SrSi2 using the hybrid functional method2022
- Author(s)
  D. Shiojiri, T. Iida, M. Yamaguchi, N. Hirayama, and Y. Imai
- Journal Title
  
  Physica B: Condensed Matter
  
  Volume: 634 Pages: 413795-413795
- DOI
  10.1016/j.physb.2022.413795
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H00772, KAKENHI-PROJECT-20K05681
[Journal Article] First-principles study of the structural and thermoelectric properties of Y-doped α-SrSi22022
- Author(s)
  M. Yamaguchi, D. Shiojiri, T. Iida, N. Hirayama, and Y. Imai
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 61 Issue: 3 Pages: 031002-031002
- DOI
  10.35848/1347-4065/ac48d7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H00772, KAKENHI-PROJECT-20K05681
[Journal Article] Electronic band engineering of Mg<sub>2</sub>Si by isoelectronic impurity doping: a first-principles study for enhancing thermoelectric properties2022
- Author(s)
  Imai Kiyoka、Ikebuchi Ryohei、Hirayama Naomi、Hamada Noriaki、Imai Yoji
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 62 Issue: SD Pages: SD1007-SD1007
- DOI
  10.35848/1347-4065/aca771
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05681
[Journal Article] Recent Studies on the Environmentally Benign Alkaline-Earth Silicide Mg2Si for Middle-Temperature Thermoelectric Applications2022
- Author(s)
  Shiojiri Daishi、Iida Tsutomu、Hirayama Naomi、Imai Yoji、Sugawara Hiroharu、Kusaka Jin
- Journal Title
  
  Energies
  
  Volume: 15 Issue: 13 Pages: 4859-4859
- DOI
  10.3390/en15134859
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K05681
[Journal Article] Enhanced Thermoelectric Performance of Vertical Bridgman‐Grown Mg2Si by Codoping with Sb and Zn2022
- Author(s)
  D. Shiojiri, T. Iida, H. Hamba, T. Kodama, M. Yamaguchi, N. Hirayama, and Y. Imai
- Journal Title
  
  Journal of Electronic Materials
  
  Volume: 51 Issue: 3 Pages: 1311-1321
- DOI
  10.1007/s11664-021-09404-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H00772, KAKENHI-PROJECT-20K05681
[Journal Article] Electronic structure tuning of α-SrSi2 by isotropic strain and isoelectronic impurity incorporation: A first-principles study for enhancement of low-temperature thermoelectric performance2021
- Author(s)
  D. Shiojiri, T. Iida, M. Yamaguchi, N. Hirayama, and Y. Imai
- Journal Title
  
  Journal of Applied Physics
  
  Volume: 130 Issue: 21 Pages: 215103-215103
- DOI
  10.1063/5.0063506
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H00772, KAKENHI-PROJECT-20K05681
[Journal Article] Enhancement of thermoelectric performance of Mg2Si via co-doping Sb and C by simultaneous tuning of electronic and thermal transport properties2021
- Author(s)
  D. Shiojiri, T. Iida, H. Kakio, M. Yamaguchi, N. Hirayama, Y. Imai
- Journal Title
  
  Journal of Alloys and Compounds
  
  Volume: 891 Pages: 161968-161968
- DOI
  10.1016/j.jallcom.2021.161968
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H00772, KAKENHI-PROJECT-20K05681
[Journal Article] Re-evaluation of the electronic structure and thermoelectric properties of narrow-gap semiconducting α-SrSi2: A complementary experimental and first-principles hybrid-functional approach2021
- Author(s)
  Shiojiri Daishi、Iida Tsutomu、Kadono Tomoyuki、Yamaguchi Masato、Kodama Takuya、Yamaguchi Seiya、Takahashi Shinta、Kayama Yuki、Hiratsuka Kota、Imai Motoharu、Hirayama Naomi、Imai Yoji
- Journal Title
  
  Journal of Applied Physics
  
  Volume: 129 Issue: 11 Pages: 115101-115101
- DOI
  10.1063/5.0041670
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05681, KAKENHI-PROJECT-19H00772
[Journal Article] Performance comparison of hybrid functionals for describing narrow-gap semiconductors: A study on low-temperature thermoelectric material α-SrSi22021
- Author(s)
  D. Shiojiri, T. Iida, M. Yamaguchi, N. Hirayama, and Y. Imai
- Journal Title
  
  Computational Condensed Matter
  
  Volume: 30 Pages: e00620-e00620
- DOI
  10.1016/j.cocom.2021.e00620
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H00772, KAKENHI-PROJECT-20K05681
[Journal Article] Investigation of local structures and electronic states of Sb-doped Mg2Si by fluorescence XAFS and HAXPES2020
- Author(s)
  Kadono Tomoyuki、Hirayama Naomi、Nishio Tadashi、Yamazawa Shingo、Oki Naoto、Takahashi Yoshinobu、Takikawa Natsumi、Yasui Akira、Nitta Kiyofumi、Sekizawa Oki、Tokumura Mako、Takemoto Shoji、Iida Tsutomu、Kotsugi Masato
- Journal Title
  
  Applied Physics Letters
  
  Volume: 117 Issue: 14 Pages: 143901-143901
- DOI
  10.1063/5.0018323
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05681, KAKENHI-PROJECT-19H00772
[Journal Article] Conduction band engineering of Mg2Si by isotropic strain for enhancement of thermoelectric performance: a first-principles study2020
- Author(s)
  N. Hirayama, Y. Imai, and N. Hamada
- Journal Title
  
  Journal of Applied Physics
  
  Volume: 127 Issue: 20 Pages: 205107-205107
- DOI
  10.1063/5.0001857
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14922, KAKENHI-PROJECT-20K05681, KAKENHI-PROJECT-18K03550
[Journal Article] Change of the band structure of Mg2Si induced by interstitial doping with nonmetallic elements2020
- Author(s)
  Y. Imai, N. Hirayama, A. Yamamoto, and K. Takarabe
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 59 Issue: SF Pages: SFFC04-SFFC04
- DOI
  10.7567/1347-4065/ab6567
- NAID
  210000157894
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14922, KAKENHI-PROJECT-20K05681
[Journal Article] Theoretical study of fluorine doping in layered LaOBiS2-type compounds2019
- Author(s)
  N. Hirayama, M. Ochi, and K. Kuroki
- Journal Title
  
  Physical Review B
  
  Volume: 100 Issue: 12
- DOI
  10.1103/physrevb.100.125201
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K14922, KAKENHI-PUBLICLY-19H04697
[Journal Article] Substitutional and interstitial impurity p-type doping of thermoelectric Mg2Si: a theoretical study2019
- Author(s)
  Hirayama Naomi、Iida Tsutomu、Sakamoto Mariko、Nishio Keishi、Hamada Noriaki
- Journal Title
  
  Science and Technology of Advanced Materials
  
  Volume: 20 Issue: 1 Pages: 160-172
- DOI
  10.1080/14686996.2019.1580537
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K14922, KAKENHI-PROJECT-16H02329, KAKENHI-PROJECT-17H03221, KAKENHI-PROJECT-18K03550
[Journal Article] Influence of native defects on structural and electronic properties of magnesium silicide2017
- Author(s)
  N. Hirayama, T. Iida, K. Nishio, Y. Kogo, K. Takarabe, and N. Hamada
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 57 Issue: 5S1 Pages: 05DC05-05DC05
- DOI
  10.7567/jjap.56.05dc05
- NAID
  210000147765
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14922
[Journal Article] Influence of native defects on structural and electronic properties of magnesium silicide2017
- Author(s)
  N. Hirayama, I. Tsutomu, K. Nishio, Y. Kogo, K. Takarabe, and N. Hamada
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 56
- NAID
  210000147765
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26820099
[Journal Article] Recent Progress in the Development of Mg<sub>2</sub>Si-based Thermoelectric Materials2016
- Author(s)
  飯田努、平山尚美
- Journal Title
  
  Materia Japan
  
  Volume: 55 Issue: 7 Pages: 302-306
- DOI
  10.2320/materia.55.302
- NAID
  130005159318
- ISSN
  1340-2625, 1884-5843
- Language
  Japanese
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26820099
[Journal Article] Analysis of energy states of two-dimensional electron gas in pseudomorphically strained InSb high-electron-mobility transistors taking into account the nonparabolicity of the conduction band2016
- Author(s)
  Y. Nishio, T. Sato, N. Hirayama, T. Iida, and Y. Takanashi
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 55 Issue: 8 Pages: 084301-084301
- DOI
  10.7567/jjap.55.084301
- NAID
  210000146940
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26820099
[Journal Article] Analysis of energy states where electrons and holes coexist in pseudomorphically strained InAs-HEMTs2016
- Author(s)
  Y. Nishio, T. Sato, N. Hirayama, T. Iida, and Y. Takanashi
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 55 Issue: 4S Pages: 04EG08-04EG08
- DOI
  10.7567/jjap.55.04eg08
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26820099
[Journal Article] First-principles investigation of structural, electronic, and thermoelectric properties of n- and p-type Mg2Si2015
- Author(s)
  Naomi Hirayama, Tsutomu Iida, Shunsuke Morioka, Mariko Sakamoto, Keishi Nishio, Yasuo Kogo, Yoshifumi Takanashi, and Noriaki Hamada
- Journal Title
  
  Journal of Materials Research
  
  Volume: 30 Issue: 17 Pages: 2564-2577
- DOI
  10.1557/jmr.2015.206
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26820099, KAKENHI-PROJECT-24246050
[Journal Article] First-Principles Study on Structural and Thermoelectric Properties of Al- and Sb-Doped Mg2Si2015
- Author(s)
  Naomi Hirayama, Tsutomu Iida, Hiroki Funashima, Shunsuke Morioka, Mariko Sakamoto, Keishi Nishio, Yasuo Kogo, Yoshifumi Takanashi, Noriaki Hamada
- Journal Title
  
  Journal of Electronic Materials
  
  Volume: 44 Issue: 6 Pages: 1656-1662
- DOI
  10.1007/s11664-014-3508-4
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26820099, KAKENHI-PROJECT-24246050
[Journal Article] Theoretical analysis of structure and formation energy of impurity-doped Mg2Si: Comparison of first-principles codes for material properties2015
- Author(s)
  Naomi Hirayama, Tsutomu Iida, Shunsuke Morioka, Mariko Sakamoto, Keishi Nishio, Yasuo Kogo, Yoshifumi Takanashi, and Noriaki Hamada
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 54 Issue: 7S2 Pages: 07JC05-07JC05
- DOI
  10.7567/jjap.54.07jc05
- NAID
  210000145478
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26820099, KAKENHI-PROJECT-24246050
[Journal Article] Selection and Evaluation of Thermal Interface Materials for Reduction of the Thermal Contact Resistance  of Thermoelectric Generators2014
- Author(s)
  T. Sakamoto, T. Iida, K. Sekiguchi, Y. Taguchi, N. Hirayama, K. Nishio and Y. Takanashi
- Journal Title
  
  Journal of Electronic Materials
  
  Volume: 43 Issue: 10 Pages: 3792-3800
- DOI
  10.1007/s11664-014-3165-7
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24246050
[Journal Article] Development of an Mg_2Si unileg thermoelectric module using durable Sb-doped Mg_2Si Legs2013
- Author(s)
  T. Nemoto, T. Iida, J. Sato, T. Sakamoto, N. Hirayama, T. Nakajima, Y. Takanashi
- Journal Title
  
  Journal of Electronic Materials
  
  Volume: 42 Issue: 7 Pages: 2192-2197
- DOI
  10.1007/s11664-013-2569-0
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-12J07687, KAKENHI-PROJECT-24246050
[Journal Article] Thermoelectric properties and durability at elevated temperatures of impurity doped n-type Mg2Si2013
- Author(s)
  Y. Oto, T. Iida, T. Sakamoto, R. Miyahara, A. Natsui, K. Nishio, Y. Kogo, N. Hirayama, and Y. Takanashi
- Journal Title
  
  Phys. Status Solidi C
  
  Volume: 12 Issue: 12 Pages: 1857-1861
- DOI
  10.1002/pssc.201300353
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] 希薄不純物を含むMg2Siの電子状態および熱電物性の理論解析2024
- Author(s)
  平山尚美
- Organizer
  応用物理学会第４２回シリサイド系半導体研究会
- Invited
- Data Source
  KAKENHI-PROJECT-23K03926
[Presentation] Fe-B-Si系アモルファス合金の短距離・中距離秩序の理論解析2024
- Author(s)
  平山尚美
- Organizer
  第71回応用物理学会春季学術講演会
- Data Source
  KAKENHI-PROJECT-23K03926
[Presentation] フォノン散乱による有限温度効果を考慮したMg2Si系材料の電子状態および熱電特性の計算2023
- Author(s)
  平山尚美
- Organizer
  第84回応用物理学会秋季学術講演会
- Data Source
  KAKENHI-PROJECT-23K03926
[Presentation] 有限温度効果と不純物分布の不規則性を考慮したMg2Si系材料の電気伝導率計算2023
- Author(s)
  平山尚美
- Organizer
  第70回応用物理学会春季学術講演会
- Data Source
  KAKENHI-PROJECT-20K05681
[Presentation] Fe-B-Si系アモルファス合金の微視的構造の解明にむけた原子シミュレーション2023
- Author(s)
  平山尚美
- Organizer
  日本材料学会第9回材料WEEK
- Data Source
  KAKENHI-PROJECT-23K03926
[Presentation] Structural properties and local atomic orders of amorphous Fe-B-Si alloys,2023
- Author(s)
  Naomi Hirayama
- Organizer
  GAP & (M)ACE Developers and Users Meeting
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K03926
[Presentation] 不純物分布の不規則性を考慮したMg2Si 系材料の電気伝導率計算2023
- Author(s)
  平山　尚美
- Organizer
  多元系化合物・太陽電池研究会年末講演会
- Data Source
  KAKENHI-PROJECT-20K05681
[Presentation] 有限温度における不純物ドープ Mg2Siの電子状態および熱電特性の理論研究2023
- Author(s)
  平山尚美
- Organizer
  第20回日本熱電学会学術講演会
- Data Source
  KAKENHI-PROJECT-23K03926
[Presentation] Electronic structure engineering of Mg2Si by Isotropic Strain and Isoelectronic Impurity Doping2022
- Author(s)
  Naomi Hirayama
- Organizer
  International Conference on Organic and Hybrid Thermoelectrics
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K05681
[Presentation] Electronic Band Engineering of Mg2Si by Isoelectronic Impurity Doping: A First-Principles Study for Enhancing Thermoelectric Properties2022
- Author(s)
  Naomi Hirayama
- Organizer
  APAC-Silicide 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K05681
[Presentation] Enhancement of Thermoelectric Performance of N-type Mg2Si by Chemical Pressure of Impurity Dopants2019
- Author(s)
  N. Hirayama, Y. Imai, and N. Hamada
- Organizer
  17th European Conference on Thermoelectrics
- Data Source
  KAKENHI-PROJECT-17K14922
[Presentation] Effects of Electron-phonon Scattering on Temperature Dependence of Half-metallicity of Co2MnSi2019
- Author(s)
  N. Hirayama and H. Akai
- Organizer
  Materials Research Meeting 2019
- Data Source
  KAKENHI-PROJECT-17K14922
[Presentation] 第一原理計算によるLaOBiS2およびLaOSbSe2におけるフッ素ドープと結晶構造の関係2018
- Author(s)
  平山　尚美
- Organizer
  第15回日本熱電学会学術講演会
- Data Source
  KAKENHI-PROJECT-17K14922
[Presentation] 第一原理計算によるLaOBiS2およびLaOSbSe2におけるフッ素ドープと結晶構造の関係2018
- Author(s)
  平山　尚美
- Organizer
  日本物理学会2018年秋季大会
- Data Source
  KAKENHI-PROJECT-17K14922
[Presentation] Theoretical Study on the Fluorine Doping for Layered Thermoelectric Materials with LaOBiS2-type Structures2018
- Author(s)
  Naomi Hirayama
- Organizer
  XVI INTERSTATE CONFERENCE Thermoelectrics and their applications 2018 (ISCTA 2018)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14922
[Presentation] Influence of Mg-related defects on structural and electronic properties of Mg2Si2016
- Author(s)
  Naomi Hirayama
- Organizer
  Asia-Pacific Conference on Semiconducting Silicides and Related Materials
- Place of Presentation
  Nishijin Plaza, Kyushu University（九州）
- Year and Date
  2016-07-16
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] 第一原理計算手法による熱電材料開発2016
- Author(s)
  平山尚美
- Organizer
  第28回シリサイド系半導体研究会
- Place of Presentation
  新潟駅前カルチャーセンター　４階４０１号室
- Year and Date
  2016-09-16
- Invited
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] Electronic and thermoelectric properties of impurity doped Mg2Si incorporating Mg-related defects2016
- Author(s)
  Naomi Hirayama
- Organizer
  14th European Conference on Thermoelectrics (ECT2016)
- Place of Presentation
  the Congress Center of IST（ポルトガル）
- Year and Date
  2016-09-20
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] Examination of the Surface of Mg2Si after Chemical Etching of Mg2Si in Preparation for Electrode Deposition and Surface Passivation2015
- Author(s)
  Yuma Nagatsuka, Haruno Kunioka,Tsutomu Iida, Nana Ishida, Naomi Hirayama, Atsuo Yasumori, Yasuo Kogo and Keishi Nishio
- Organizer
  MATERIALS RESEARCH SOCIETY, Fall Meeting 2015
- Place of Presentation
  Boston, USA
- Year and Date
  2015-11-29
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermoelectric Behavior of Various n-Type Impurities in Mg2Si2015
- Author(s)
  Ayano Shimodate, Tsutomu Iida, Mitsunobu Nakatani, Naomi Hirayama, Atsuo Yasumori,Yasuo Kogo,Keishi Nishio
- Organizer
  MATERIALS RESEARCH SOCIETY, Fall Meeting 2015
- Place of Presentation
  Boston, USA
- Year and Date
  2015-11-29
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] The Effect of Heat Exposure on the Mechanical Properties of Sintered Mg2Si2015
- Author(s)
  Shuhei Hasegawa, Takashi Nakamura, Yasuo Kogo, Ryo Inoue, Tsutomu Iida, Naomi Hirayama, Keishi Nishio
- Organizer
  MATERIALS RESEARCH SOCIETY, Fall Meeting 2015
- Place of Presentation
  Boston, USA
- Year and Date
  2015-11-29
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermoelectric and Mechanical properties of Sb+Zn co-doped n-type Mg2Si2015
- Author(s)
  A. Shimodate, T. Iida, M. Nakatani, S. Hirata, T.Nakamura, N. Hirayama, M. Ishikawa, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, Spring Meeting 2015
- Place of Presentation
  San Francisco, USA
- Year and Date
  2015-04-05
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Theoretical investigation of structural, electronic, and thermoelectric properties of p‐type impurity‐doped Mg2Si2015
- Author(s)
  Naomi Hirayama
- Organizer
  34th Annual International Conference on Thermoelectrics / 13th European Conference on Thermoelectrics,
- Place of Presentation
  Dresden Germany
- Year and Date
  2015-06-29
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] n型およびp型不純物添加Mg2Siの構造安定性と熱電輸送特性の理論研究2015
- Author(s)
  平山尚美
- Organizer
  第十二回日本熱電学会学術講演会
- Place of Presentation
  九州大学
- Year and Date
  2015-09-08
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] Thermoelectric and Mechanical Properties of N-type Mg2Si for Waste-heat- recovery Power Generator2015
- Author(s)
  Tsutomu Iida, N. Hirayama, Yasuo Kogo, Atsuo Yasumori, Keishi Nishio
- Organizer
  14th International Union of Materials Research Societies- International Conference on Advanced Materials
- Place of Presentation
  JEJU, KOREA
- Year and Date
  2015-10-25
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Possible Electrode Formation Processes for n-Type Mg2Si2015
- Author(s)
  N. Ishida , T. Iida , Y. Nagatsuka, H. Kunioka , N. Hirayama, A. Yasumori , Y. Kogo , and K. Nishio
- Organizer
  MATERIALS RESEARCH SOCIETY, Fall Meeting 2015
- Place of Presentation
  Boston, USA
- Year and Date
  2015-11-29
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] First-principles study on Seebeck and Hall Effects in Impurity-doped Mg2Si2014
- Author(s)
  Naomi Hirayama
- Organizer
  12th European Conference on Thermoelectricity (ECT2014)
- Place of Presentation
  Madrid, Spain
- Year and Date
  2014-09-24
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] Thermoelectric properties and durability at elevated temperatures of impurity doped n-type Mg2Si2013
- Author(s)
  Y. Oto, T. Iida, T. Sakamoto, R. Miyahara, A. Natsui, K. Nishio, Y. Kogo, N. Hirayama, and Y. Takanashi
- Organizer
  ASIA-PACIFIC CONFERENCE ON SEMICONDUCTING SILICIDES 2013
- Place of Presentation
  Tsukuba, Japan
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Variation in the mechanical properties of impurity-incorporated Mg2Si prepared by the plasma sintering method2013
- Author(s)
  S. Hirata, T. Iida, Y. Oto, M. Ishikawa, Y. Taguchi, A. Node, T. Sakamoto, Y. Kogo, K. Nishio, N. Hirayama, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, 2013 Fall Meeting
- Place of Presentation
  Boston, USA
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermoelectric and mechanical properties of n-type Mg2Si prepared with manufacturing-directed processes and durability characteristics2013
- Author(s)
  T. Iida, Y. Oto, S. Soeda, S. Hirata, M. Ishikawa, T. Sakamoto, Y. Kogo, K. Nishio, Y. Taguchi, A. Node, N. Hirayama, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, 2013 Fall Meeting
- Place of Presentation
  Boston, USA
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Mechanical properties of Mg2Si and effect of Ni addition2013
- Author(s)
  Y. Kogo, M. Ishikawa, T. Nakamura, T. Iida, K. Nishio, and N. Hirayama
- Organizer
  THE MINERALS, METALS & MATERIALS SOCIETIE (TMS), Materials Science& Technology 2013 (MS&T 2013)
- Place of Presentation
  Montreal, Canada
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Temperature dependence of mechanical properties of Mg2Si for thermoelectric devices2013
- Author(s)
  M. Ishikawa, T. Nakamura, Y. Kogo, T. Iida, K. Nishio, and N. Hirayama
- Organizer
  MATERIALS RESEARCH SOCIETY, 2013 Fall Meeting
- Place of Presentation
  Boston, USA
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Stress analysis and output power measurement of an unconventional structure for an n-Mg2Si thermoelectric power generator2013
- Author(s)
  T. Sakamoto, T. Iida, Y. Ohno, M. Ishikawa, Y. Kogo, N. Hirayama,K. Arai, K. Nishio, T. Nakamura, and Y. Takanashi
- Organizer
  IEEE 32nd INTERNATIONAL CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  Kobe, Japan
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Adaptive thermal conjugation at the proximity of TEG contacting surface for mid-temperature operation2013
- Author(s)
  T. Sakamoto, T. Iida, Y. Taguchi, N. Hirayama, M. Ishikawa, T. Sekiguchi, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  11th EUROPEAN CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  ESA/ESTEC, Noordwijk, Netherlands
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermoelectric and mechanical properties of n-type Mg2Si and the status of unileg TEGs2013
- Author(s)
  T. Iida, Y. Oto, S. Hirata, M. Ishikawa, T. Sakamoto, Y. Kogo, K. Nishio, Y. Taguchi, A. Node, N. Hirayama, and Y. Takanashi
- Organizer
  INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES, International Conference on Advanced Materials (ICAM 2013)
- Place of Presentation
  Qingdao, China
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Improvement of thermoelectric properties of doped n-type Mg2Si and component technology to realize a unileg thermoelectric generator2013
- Author(s)
  T. Iida, T. Sakamoto, N. Hirayama, M. Ishikawa, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  IEEE 32nd INTERNATIONAL CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  Kobe, Japan
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Waste heaat recovery using environmentally benign Mg2Si for reducing automotive CO2 emission2013
- Author(s)
  T. Iida, T. Sakamoto, Y. Taguchi, N. Hirayama, M. Ishikawa, T. Nemoto, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES, International Conference on Asia (ICA 2013)
- Place of Presentation
  Bangalore, India
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Direct thermal-to-electric energy conversion using environmentally benign Mg2Si for reducing automotive CO2 emission2013
- Author(s)
  T. Iida, T. Sakamoto, K. Nishio, Y. Kogo, N. Hirayama, and Y. Takanashi
- Organizer
  ASIA-PACIFIC CONFERENCE ON SEMICONDUCTING SILICIDES 2013
- Place of Presentation
  Tsukuba, Japan
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Deterioration at elevated temperatures of Sb-doped Mg2Si dependent on plasma activated sintering process2013
- Author(s)
  K. Kato, T. Iida, T. Sakamoto, S. Soeda, N. Hirayama, K. Nishio, Y. Kogo, and Y. Takanashi
- Organizer
  2ND INTERNATIONAL CONFERENCE ON MATERIALS FOR ENERGY
- Place of Presentation
  Karlsruhe, Germany
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Current status of Mg2Si to realize practical thermal-to-electric power generation device2013
- Author(s)
  T. Iida, T. Sakamoto, Y. Taguchi, N. Hirayama, M. Ishikawa, T. Nemoto, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  11th EUROPEAN CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  ESA/ESTEC, Noordwijk, Netherlands
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Structural and Thermoelectric Properties of Al-, Sb-, and Zn-doped Mg2Si: First-principles Calculation and Rietveld Analysis
- Author(s)
  S. Morioka, N. Hirayama, T. Iida, H. Funashima, M. Sakamoto, K. Nishio, Y. Kogo, A. Yasumori, Y. Takanashi, and N. Hamada
- Organizer
  MATERIALS RESEARCH SOCIETY, 2014 Fall Meeting
- Place of Presentation
  Boston, USA
- Year and Date
  2014-11-30 – 2014-12-05
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Examination of appropriate component dimensions for an n-type Mg2Si unileg thermoelectric power generation module
- Author(s)
  A. Kawakami, T. Iida, D. Kobayashi, N. Hirayama, K. Nishio, Y. Kogo, and Y. Takanashi
- Organizer
  INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES, International Conference in Asis
- Place of Presentation
  Fukuoka, Japan
- Year and Date
  2014-08-24 – 2014-08-30
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] First-principles study on structural and thermoelectric properties of Al- and Sb-doped Mg2Si
- Author(s)
  Naomi Hirayama
- Organizer
  International Conference on Thermoelectrics 2014 (ICT2014)
- Place of Presentation
  Tennessee, USA
- Year and Date
  2014-07-08 – 2014-07-09
- Data Source
  KAKENHI-PROJECT-26820099
[Presentation] Effect of Grain Size on the Mechanical Properties of sintered Mg2Si
- Author(s)
  S. Hirata, T. Iida, M. Ishikawa, K. Nishio, Y. Takanashi, N. Hirayama, A. Yasumori, and Y. Kogo
- Organizer
  MATERIALS RESEARCH SOCIETY, 2014 Fall Meeting
- Place of Presentation
  Boston, USA
- Year and Date
  2014-11-30 – 2014-12-05
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Introduction of manufacturing-directed process for the fabrication of Mg2Si thermoelectric power generation chip
- Author(s)
  A. Shimodate, N. Ishida, T. Iida, Y. Oto, S. Soeda, S. Hirata, M. Ishikawa, T. Sakamoto, K. Nishio, Y. Kogo, Y. Taguchi, A. Node, N. Hirayama, and Y. Takanashi
- Organizer
  INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES, International Conference on Electronic Materials
- Place of Presentation
  Taipei, Taiwan
- Year and Date
  2014-06-10 – 2014-06-14
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermoelectric and mechanical properties of n-type Mg2Si and updated unileg thermoelectric power generator
- Author(s)
  T. Iida, Y. Oto, S. Soeda, S. Hirata, M. Ishikawa, T. Sakamoto, K. Nishio, Y. Kogo, Y. Taguchi, T. Nemoto, N. Hirayama, and Y. Takanashi
- Organizer
  INTERNATIONAL UNION OF MATERIALS RESEARCH SOCIETIES, International Conference on Electronic Materials
- Place of Presentation
  Taipei, Taiwan
- Year and Date
  2014-06-10 – 2014-06-14
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Mechanical Properties of Thermoelectric Materials based on Silicides
- Author(s)
  T. Nakamura, Y. Kogo, T. Iida, T. Sakamoto, N. Hirayama, M. Ishikawa, K. Nishio, and Y. Takanashi
- Organizer
  12th EUROPEAN CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  Madrid, Spain
- Year and Date
  2014-09-24 – 2014-09-26
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Comparison between finite element method calculations and measured data in terms of the output power of an Mg2Si thermoelectric chip and a unileg couple
- Author(s)
  T. Nakamura, Y. Kogo, T. Iida, T. Sakamoto, N. Hirayama, M. Ishikawa, K. Nishio, and Y. Takanashi
- Organizer
  IEEE 33rd INTERNATIONAL CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  Nashville, USA
- Year and Date
  2014-07-06 – 2014-07-11
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermal stability at the interface between n-type Mg2Si and the electrode and passivation layers
- Author(s)
  T. Iida, A. Shimodate, N. Ishida, N. Hirayama, A. Yasumori, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  12th EUROPEAN CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  Madrid, Spain
- Year and Date
  2014-09-24 – 2014-09-26
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermoelectric and mechanical properties of n-type Mg2Si to realize practical thermal-to-electric power generation device
- Author(s)
  T. Iida, T. Sakamoto, Y. Taguchi, N. Hirayama, M. Ishikawa, T. Nemoto, Y. Kogo, K. Nishio, and Y. Takanashi
- Organizer
  THE 5th INTERNATIONAL CONGRESS ON CERAMICS
- Place of Presentation
  Beijing, China
- Year and Date
  2014-08-17 – 2014-08-21
- Invited
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Mechanical properties of thermoelectric Mg2Si prepared by a plasma-activated sintering method with the incorporation of a metallic binder
- Author(s)
  N. Ishida, T. Iida, S. Hirata, T. Nakamura, M. Ishikawa, T. Sakamoto, Y. Taguchi, Y. Kogo, N. Hirayama, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, 2014 Spring Meeting
- Place of Presentation
  San Francisco, USA
- Year and Date
  2014-04-21 – 2014-04-25
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] First-principles study on Seebeck and Hall Effects in Impurity-doped Mg2Si
- Author(s)
  N. Hirayama, T. Iida, H. Funashima, S. Morioka, M. Sakamoto, K. Nishio, Y. Kogo, Y. Takanashi, and N. Hamada
- Organizer
  12th EUROPEAN CONFERENCE ON THERMOELECTRONICS
- Place of Presentation
  Madrid, Spain
- Year and Date
  2014-09-24 – 2014-09-26
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Electrical properties and thermal stability of electrodes formed for n-type Mg2Si using a sputtering method
- Author(s)
  R. Yamazaki, T. Iida, Y. Nishio, T. Sato, K. Nishio, Y. Kogo, A. Yasumori, Y. Taguchi, T. Sakamoto, N. Hirayama, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, 2014 Fall Meeting
- Place of Presentation
  Boston, USA
- Year and Date
  2014-11-30 – 2014-12-05
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Thermal stability and productivity of Sb- or Al-doped n-type Mg2Si concurrently incorporated with Zn
- Author(s)
  A. Shimodate, T. Iida, Y. Nishio, K. Nishio, Y. Kogo, A. Yasumori, Y. Taguchi, T. Sakamoto, N. Hirayama, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, 2014 Fall Meeting
- Place of Presentation
  Boston, USA
- Year and Date
  2014-11-30 – 2014-12-05
- Data Source
  KAKENHI-PROJECT-24246050
[Presentation] Output power measurement of n-type Mg2Si thermoelectric chips and elemental unileg couples
- Author(s)
  D. Kobayashi, T. Iida, A. Kawakami, Y. Nishio, K. Nishio, Y. Kogo, A. Yasumori, N. Hirayama, and Y. Takanashi
- Organizer
  MATERIALS RESEARCH SOCIETY, 2014 Fall Meeting
- Place of Presentation
  Boston, USA
- Year and Date
  2014-11-30 – 2014-12-05
- Data Source
  KAKENHI-PROJECT-24246050

1. IIDA Tsutomu (20297625)

# of Collaborated Projects: 2 results

# of Collaborated Products: 46 results
2. NISHIO Keishi (90307710)

# of Collaborated Projects: 1 results

# of Collaborated Products: 6 results
3. FUNASHIMA Hiroki (60434049)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
4. KOGO Yasuo (60249935)

# of Collaborated Projects: 1 results

# of Collaborated Products: 34 results
5. 久米徹二 (30293541)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 福山敦彦 (10264368)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 鵜殿治彦 (10282279)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 大橋史隆 (20613087)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 遠藤和彦 (60392594)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. KUMAR RAHUL (80961862)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. 今井基晴 (90354159)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Hirayama Naomi 平山 尚美

HIRAYAMA Naomi 平山 尚美

Research Projects

Research Products

Co-Researchers

Creation and characterization of new group IV clathrate material with direct gap

Principal Investigator

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Research Institution

第一原理計算と機械学習力場による加速分子動力学法を用いた熱電変換材料の理論設計Principal Investigator

Principal Investigator

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Review Section

Research Institution

Theoretical study of impurity-doped Mg2Si thermoelectric materials using first-principles calculations and machine learning techniquePrincipal Investigator

Principal Investigator

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Review Section

Research Institution

Thermoelectric calculation at finite temperature: towards environmentally benign thermoelectric materialsPrincipal Investigator

Principal Investigator

Project Period (FY)

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Research Institution

Theoretical study of structural, electronic, and thermoelectric properties of silicide materialsPrincipal Investigator

Principal Investigator

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Research Field

Research Institution

Development of thermoelectric waste-heat-recovery power-generation system adaptable to automotive applications

Principal Investigator

Project Period (FY)

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Research Field

Research Institution

[Journal Article] First-principles study of the effects of native defects on the thermoelectric properties of narrow-gap semiconducting α-SrSi2 using the hybrid functional method2022

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[Journal Article] First-principles study of the structural and thermoelectric properties of Y-doped α-SrSi22022

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[Journal Article] Electronic band engineering of Mg<sub>2</sub>Si by isoelectronic impurity doping: a first-principles study for enhancing thermoelectric properties2022

Author(s)

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[Journal Article] Recent Studies on the Environmentally Benign Alkaline-Earth Silicide Mg2Si for Middle-Temperature Thermoelectric Applications2022

Author(s)

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[Journal Article] Enhanced Thermoelectric Performance of Vertical Bridgman‐Grown Mg2Si by Codoping with Sb and Zn2022

Author(s)

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[Journal Article] Electronic structure tuning of α-SrSi2 by isotropic strain and isoelectronic impurity incorporation: A first-principles study for enhancement of low-temperature thermoelectric performance2021

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[Journal Article] Enhancement of thermoelectric performance of Mg2Si via co-doping Sb and C by simultaneous tuning of electronic and thermal transport properties2021

Author(s)

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Data Source

[Journal Article] Re-evaluation of the electronic structure and thermoelectric properties of narrow-gap semiconducting α-SrSi2: A complementary experimental and first-principles hybrid-functional approach2021

Author(s)

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DOI

Hirayama Naomi 平山尚美

HIRAYAMA Naomi 平山尚美