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Development of innovative thermoelectric materials based on the strongly-correlated electron system in transition-metal oxides

Research Project

Project/Area Number 19K05019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26020:Inorganic materials and properties-related
Research InstitutionDoshisha University

Principal Investigator

Kato Masaki  同志社大学, 理工学部, 教授 (90271006)

Co-Investigator(Kenkyū-buntansha) 廣田 健  同志社大学, 研究開発推進機構, 嘱託研究員 (30238414)
道岡 千城  京都大学, 理学研究科, 助教 (70378595)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsパイロクロア / 遷移金属酸化物 / 熱電変換特性 / 化学的圧力効果 / 元素置換効果 / 電気伝導性酸化物 / 量子臨界状態 / 熱電変換材料 / コバルト酸化物 / デラフォサイト型酸化物 / 置換型固溶体 / 量子臨界現象
Outline of Research at the Start

パイロクロア型結晶構造を有する遷移金属酸化物を対象に,様々な固体化学的な合成手法を駆使し,マクロ・ミクロ両面から物質の電気的・磁気的特性を詳細に評価することによって,高機能性の革新的な熱電変換材料の創発をめざす。さらに,導電性と絶縁性の間にあるとされる量子臨界現象と,結晶構造に由来するスピンフラストレーション双方に基づく,クリーンエネルギーに資する新たなエネルギー変換材料・物質群の開拓を行う。

Outline of Final Research Achievements

In this study, we apply the quantum critical phenomenon by synthesizing a novel substitution type solid solution for pyrochlore-type transition metal oxides and related transition-metal oxides, which show quantum critical phenomena at the boundary between conductors and insulators. The purpose was to develop new thermoelectric materials. It was confirmed that the thermoelectric properties were exhibited in a novel substitution type solid solution in which Co, Cu, Mn, etc. were substituted with a pyrochlore-type oxide containing ruthenium. Although the dimensionless figure of merit ZT (= S2T / ρκ, S is the Seebeck coefficient, ρ is the electrical resistivity, κ is the thermal conductivity, and T is the absolute temperature) was not found to be high enough, it was clarified that the thermoelectric conversion characteristics are exhibited by performing appropriate carrier doping to the electronic state near the quantum critical point.

Academic Significance and Societal Importance of the Research Achievements

遷移金属を含む酸化物セラミックスにおいて,元素置換などにより,結晶構造や遷移金属元素の電子状態を変化させることができる。それによって物質の電気伝導性や磁気特性を制御することができ,特に本研究ではいわゆる強相関電子状態にある遷移金属酸化物において熱電変換特性を発現できることが明らかになった。熱電変換特性のさらなる向上につながる物質開発指針のひとつを明らかにできたことが本研究の意義である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (33 results)

All 2022 2021 2020 2019

All Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 3 results) Presentation (19 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Fabrication of ZrC/ZrB2/C Composites Having High Mechanical Properties at Elevated Temperatures2022

    • Author(s)
      Kai Matsumoto, Masaki KATO, Ken Hirota, Toshiyuki Nishimura
    • Journal Title

      Materials Sciences and Applications

      Volume: 13 Issue: 04 Pages: 232-248

    • DOI

      10.4236/msa.2022.134013

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of High Density Soft Magnetic Fe-3mass%Si/ferrite Composites with a High Saturation Magnetization Density of 1.5 T2021

    • Author(s)
      YOSHIDA Minori、KATO Masaki、HIROTA Ken
    • Journal Title

      Journal of the Japan Society of Powder and Powder Metallurgy

      Volume: 68 Issue: 9 Pages: 356-366

    • DOI

      10.2497/jjspm.68.356

    • NAID

      130008088002

    • ISSN
      0532-8799, 1880-9014
    • Year and Date
      2021-09-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental validation of high electrical conductivity in Ni-rich LaNi1?xFexO3 solid solutions (x ? 0.4) in high-temperature oxidizing atmospheres2021

    • Author(s)
      Adachi Yoshinobu、Hatada Naoyuki、Kato Masaki、Hirota Ken、Uda Tetsuya
    • Journal Title

      Materials Advances

      Volume: - Issue: 10 Pages: 3257-3263

    • DOI

      10.1039/d0ma00983k

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Additive Manufacturing of Ceramics Using a Fused Deposition Modeling (FDM)-Type 3D Printer and Their Microwave Sintering and HIP Treatment2020

    • Author(s)
      HIROTA Ken、NAKAMURA Ibuki、WATANABE Kazumasa、TANIGUCHI Tomoki、KATO Masaki、UESUGI Naoki、KIMURA Hideo、NAKATA Akiyuki
    • Journal Title

      Journal of the Japan Society of Powder and Powder Metallurgy

      Volume: 67 Issue: 8 Pages: 431-440

    • DOI

      10.2497/jjspm.67.431

    • NAID

      130007887600

    • ISSN
      0532-8799, 1880-9014
    • Year and Date
      2020-08-15
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fabrication of Dense ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> Ceramics by Pressure-less Sintering Using Neutralization Co-Precipitated Powders with Cellulose Nano-Fiber2020

    • Author(s)
      YOSHIDA Minori、HIROTA Ken、KATO Masaki、ZINNO Kazuhito、HAYASHI Takayuki、KIMURA Hideo
    • Journal Title

      Journal of the Japan Society of Powder and Powder Metallurgy

      Volume: 67 Issue: 7 Pages: 381-390

    • DOI

      10.2497/jjspm.67.381

    • NAID

      130007873050

    • ISSN
      0532-8799, 1880-9014
    • Year and Date
      2020-07-15
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fabrication of dense ZrB2/B4C composites using pulsed electric current pressure sintering and evaluation of their high-temperature bending strength2020

    • Author(s)
      Le Tung Duy、Hirota Ken、Kato Masaki、Miyamoto Hiroyuki、Yuasa Motohiro、Nishimura Toshiyuki
    • Journal Title

      Ceramics International

      Volume: 46 Issue: 11 Pages: 18478-18486

    • DOI

      10.1016/j.ceramint.2020.04.153

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Revisiting the A-type antiferromagnet NaNiO2 with muon spin rotation measurements and density functional theory calculations2020

    • Author(s)
      Forslund Ola Kenji、Ohta Hiroto、Kamazawa Kazuya、Stubbs Scott L.、Ofer Oren、M?nsson Martin、Michioka Chishiro、Yoshimura Kazuyoshi、Hitti Bassam、Arseneau Donald、Morris Gerald D.、Ansaldo Eduardo J.、Brewer Jess H.、Sugiyama Jun
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 18

    • DOI

      10.1103/physrevb.102.184412

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dependence of Antibacterial Activity of ZnO Powders on Their Physico-chemical Properties2019

    • Author(s)
      NGUYEN Thi Minh Phuong、HIROTA Ken、KATO Masaki、TSUKAGOSHI Kazuhiko、YAMADA Hirohisa、TERABE Atsuki、MIZUTANI Hideto
    • Journal Title

      Journal of the Japan Society of Powder and Powder Metallurgy

      Volume: 66 Issue: 9 Pages: 434-441

    • DOI

      10.2497/jjspm.66.434

    • NAID

      130007706751

    • ISSN
      0532-8799, 1880-9014
    • Year and Date
      2019-09-15
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preparation of Pure and Fully Dense Lanthanum Nickelates Lan+1NinO3n+1 (n = 2, 3, ∞) by Post-Sintering Oxidation Process2019

    • Author(s)
      Adachi Yoshinobu、Hatada Naoyuki、Hirota Ken、Kato Masaki、Uda Tetsuya
    • Journal Title

      Journal of the American Ceramic Society

      Volume: 102 Issue: 12 Pages: 7077-7088

    • DOI

      10.1111/jace.16611

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two magnetization plateaus in the kagome fluoride Cs2LiTi3F122019

    • Author(s)
      Shirakami Ryu、Ueda Hiroaki、Jeschke Harald O.、Nakano Hiroki、Kobayashi Shintaro、Matsuo Akira、Sakai Toru、Katayama Naoyuki、Sawa Hiroshi、Kindo Koichi、Michioka Chishiro、Yoshimura Kazuyoshi
    • Journal Title

      Physical Review B

      Volume: 100 Issue: 17 Pages: 1-7

    • DOI

      10.1103/physrevb.100.174401

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Linear Trimer Formation with Antiferromagnetic Ordering in 1T-CrSe2 Originating from Peierls-like Instabilities and Interlayer Se-Se Interactions2019

    • Author(s)
      Kobayashi Shintaro、Katayama Naoyuki、Manjo Taishun、Ueda Hiroaki、Michioka Chishiro、Sugiyama Jun、Sassa Yasmine、Forslund Ola Kenji、Mansson Martin、Yoshimura Kazuyoshi、Sawa Hiroshi
    • Journal Title

      Inorganic Chemistry

      Volume: 印刷中 Issue: 21 Pages: 14304-14315

    • DOI

      10.1021/acs.inorgchem.9b00186

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Frustrated magnetism in the J1-J2 honeycomb lattice compounds MgMnO3 and ZnMnO3 synthesized via a metathesis reaction2019

    • Author(s)
      Haraguchi Yuya、Nawa Kazuhiro、Michioka Chishiro、Ueda Hiroaki、Matsuo Akira、Kindo Koichi、Avdeev Maxim、Sato Taku J.、Yoshimura Kazuyoshi
    • Journal Title

      Physical Review Materials

      Volume: 3 Issue: 12 Pages: 124406-124406

    • DOI

      10.1103/physrevmaterials.3.124406

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 遷移金属酸化物における電気的・磁気的物性と固体化学2021

    • Author(s)
      加藤将樹
    • Organizer
      粉体粉末冶金協会2021年度春季大会(第127回講演大会)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Co2P型遷移金属リン化物における元素置換効果と磁性の研究2021

    • Author(s)
      太田寛人, 横山哲也, 加藤将樹
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ペロブスカイト型酸化物SrTiO3とカーボンナノファイバーの複合化と熱電特性2021

    • Author(s)
      大西大貴,太田寛人,加藤将樹
    • Organizer
      粉体粉末冶金協会2021年度秋季大会(第128回講演大会)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 三角格子構造を有するコバルト酸化物Ca3Co2O6の元素置換効果と熱電変換特性2021

    • Author(s)
      熊田康介,太田寛人,加藤将樹
    • Organizer
      粉体粉末冶金協会2021年度秋季大会(第128回講演大会)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電気伝導性銅酸化物La5SrCu6O15-δの元素置換効果と物性評価2021

    • Author(s)
      小林一茂,太田寛人,加藤将樹
    • Organizer
      粉体粉末冶金協会2021年度秋季大会(第128回講演大会)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 三角格子構造を有するデラフォサイト型酸化物の元素置換効果と物性評価2020

    • Author(s)
      乾格史郎,加藤将樹, 廣田健
    • Organizer
      粉体粉末冶金協会2020年度秋季大会(第126回講演大会)
    • Related Report
      2020 Research-status Report
  • [Presentation] 特異な構造を有するバナジウム酸化物の元素置換効果と物性評価2020

    • Author(s)
      小林陽太朗,加藤将樹, 廣田健
    • Organizer
      粉体粉末冶金協会2020年度秋季大会(第126回講演大会)
    • Related Report
      2020 Research-status Report
  • [Presentation] 山中俊介, 道岡千城, 植田浩明, 吉村一良2020

    • Author(s)
      山中俊介, 道岡千城, 植田浩明, 吉村一良
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] (Ca1-xMgx)2Co12P7の遍歴電子磁性2020

    • Author(s)
      奈良建佑, 森山広大, 村川譲一, 道岡千城, 植田浩明, 太田寛人, 香取浩子, 吉村一良
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] HIPによる高密度c-BN/[ ZrO2(Y2O3)-Al2O3]系コンポジットの作製2019

    • Author(s)
      小菅優太,廣田健,加藤将樹,石井顕人),岡村克己
    • Organizer
      粉体粉末冶金協会2019年度春季大会(第123回講演大会)
    • Related Report
      2019 Research-status Report
  • [Presentation] パイロクロア型遷移金属酸化物の物性化学2019

    • Author(s)
      加藤将樹
    • Organizer
      粉体粉末冶金協会2019年度春季大会(第123回講演大会)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 熱電特性を有する三角格子構造Na0.7CoO2の元素置換効果による物性評価2019

    • Author(s)
      稲垣 浩,加藤 将樹,廣田 健
    • Organizer
      粉体粉末冶金協会2019年度春季大会(第123回講演大会)
    • Related Report
      2019 Research-status Report
  • [Presentation] Fabrication of dense ZrB2/B4C composites using pulsed electric-current pressure sintering2019

    • Author(s)
      Tung Duy Le, Ken Hirota, Masaki Kato, Hiroyuki Miyamoto
    • Organizer
      粉体粉末冶金協会2019年度春季大会(第123回講演大会)
    • Related Report
      2019 Research-status Report
  • [Presentation] 熱電変換特性を示す層状コバルト酸化物の固体化学的展開2019

    • Author(s)
      加藤将樹,稲垣 浩,廣田 健
    • Organizer
      日本マイクログラビティ応用学会JASMAC-31
    • Related Report
      2019 Research-status Report
  • [Presentation] 遍歴磁性体 (Ca1-xMgx)2Co12P7 の単結晶を用いた磁性研究2019

    • Author(s)
      奈良建佑, 森山広大, 村川譲一, 道岡千城, 植田浩明, 太田寛人, 香取浩子, 吉村一良
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Fabrication and High-temperature Bending Strength of Fully Dense ZrB2/50vol%B4C Composites2019

    • Author(s)
      Tung Duy LE, Ken HIROTA, Masaki KATO, Motohiro YUASA, Hiroyuki MIYAMOTO, Toshiyuki NISHIMURA
    • Organizer
      Materials Science & Technology 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Preparation of anatase-type titanium dioxide having strong antibacterial activity under dark conditions2019

    • Author(s)
      Thi Minh Phuong NGUYEN, Masaki KATO, Ken HIROTA, Kazuhiko TSUKAGOSHI, Atsuki TERABE, Hideto MIZUTANI
    • Organizer
      Materials Science & Technology 2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 熱溶融堆積法 3D プリンターによるセラミックスの造形体作製とそのマイクロ波焼結および HIP 処理2019

    • Author(s)
      廣田 健, 中村維吹, 渡辺一匡,谷口智紀,加藤 将樹
    • Organizer
      粉体粉末冶金協会2019年度秋季大会(第124回講演大会)
    • Related Report
      2019 Research-status Report
  • [Presentation] セルロースナノファイバーを用いたZrO2-Al2O3系中和共沈粉体の無加圧焼結による高密度セラミックスの作製2019

    • Author(s)
      吉田 実憲,廣田 健,加藤 将樹
    • Organizer
      粉体粉末冶金協会2019年度秋季大会(第124回講演大会)
    • Related Report
      2019 Research-status Report
  • [Book] 無機固体化学 構造論・物性論2019

    • Author(s)
      吉村一良、加藤将樹
    • Total Pages
      284
    • Publisher
      内田老鶴圃
    • ISBN
      9784753635016
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] 熱電材料及びその製造方法2021

    • Inventor(s)
      加藤将樹,廣田健,福原雅博
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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