• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on the origin of giant magnetocaloric effects using pulsed and steady high magnetic fields

Research Project

Project/Area Number 18K13979
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 26010:Metallic material properties-related
Research InstitutionTohoku University

Principal Investigator

Kihara Takumi  東北大学, 金属材料研究所, 助教 (80733021)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords磁気冷凍 / 磁気熱量効果 / ホイスラー合金 / パルス強磁場 / 比熱 / 強磁場 / 形状記憶合金 / メタ磁性形状記憶合金
Outline of Final Research Achievements

Ni-Mn-based Heusler alloys Ni-Mn-Z (Z = Ga, In, Sn, and Sb) have been studied extensively as a class of promising magnetocaloric materials. These materials undergo a first-order martensitic transformation accompanied by the metamagnetic phase transition. In this study, the magnetocaloric effects were measured directly as the adiabatic temperature change using the pulsed high magnetic fields. By combining magnetization, specific heat, magnetostriction, and microscopy measurements under pulsed and steady high magnetic fields, we evaluated quantitatively the electronic, magnetic, and lattice entropy. First-principle based calculations revealed that certain non-stoichiometric compositions can show a giant magnetocaloric effect attributable to the electronic entropy change.

Academic Significance and Societal Importance of the Research Achievements

磁気冷凍は気体冷凍に代わる次世代冷凍技術として高い注目を集めているが、これまでに発見された磁気冷凍材料の多くは磁場誘起構造相転移に伴う格子エントロピー変化を活用していたため、一次相転移特有の大きな磁場ヒステリシスによってエネルギーロスが発生するという問題があった。本研究によって、電子エントロピー変化を用いた新しい磁気冷凍材料開発の道が示された。これにより一次相転移への拘りはもはや不要となり、今後ヒステリシスによるエネルギーロスの問題を解決する可能性がある。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (18 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results) Presentation (9 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] Helmholtz Zentrum Dresden Rossendorf/Technical University of Darmstadt(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Observation of inverse magnetocaloric effect in magnetic-field-induced austenite phase of Heusler alloys Ni50?xCoxMn31.5Ga18.5 (x=9?and?9.7)2021

    • Author(s)
      Kihara T.、Roy T.、Xu X.、Miyake A.、Tsujikawa M.、Mitamura H.、Tokunaga M.、Adachi Y.、Eto T.、Kanomata T.
    • Journal Title

      Physical Review Materials

      Volume: 5 Issue: 3 Pages: 0344416-0344416

    • DOI

      10.1103/physrevmaterials.5.034416

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Element-specific field-induced spin reorientation and tetracritical point in MnCr2S42021

    • Author(s)
      Yamamoto, S: Suwa, H: Kihara, T: Nomura, T: Kotani, Y: Nakamura: Skourski, Y: Zherlitsyn, S: Prodan, L: Tsurkan, V: Nojiri, H: Loidl, A: Wosnitza, J
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 103 Issue: 2

    • DOI

      10.1103/physrevb.103.l020408

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Capacitive detection of magnetostriction, dielectric constant, and magneto-caloric effects in pulsed magnetic fields2020

    • Author(s)
      Miyake Atsushi、Mitamura Hiroyuki、Kawachi Shiro、Kimura Kenta、Kimura Tsuyoshi、Kihara Takumi、Tachibana Makoto、Tokunaga Masashi
    • Journal Title

      Review of Scientific Instruments

      Volume: 91 Issue: 10 Pages: 105103-105103

    • DOI

      10.1063/5.0010753

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-field magnetization and magnetic phase diagram of metamagnetic shape memory alloys Ni50Co Mn31.5Ga18.5 ( x=9 and 9.7)2020

    • Author(s)
      Kihara T.、Xu X.、Miyake A.、Kinoshita Y.、Tokunaga M.、Adachi Y.、Kanomata T.
    • Journal Title

      Scripta Materialia

      Volume: 181 Pages: 25-29

    • DOI

      10.1016/j.scriptamat.2020.02.009

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetic properties of ferromagnetic Heusler alloy Co2NbGa2020

    • Author(s)
      Kanomata T.、Nishihara H.、Osaki T.、Doi M.、Sakon T.、Adachi Y.、Kihara T.、Obara K.、Shishido T.
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 503 Pages: 166604-166604

    • DOI

      10.1016/j.jmmm.2020.166604

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetoresistance and Thermal Transformation Arrest in Pd2Mn1.4Sn0.6 Heusler Alloys2019

    • Author(s)
      Xu Xiao、Okada Hironari、Chieda Yusuke、Aizawa Naoki、Takase Daiki、Nishihara Hironori、Sakon Takuo、Han Kwangsik、Ito Tatsuya、Adachi Yoshiya、Kihara Takumi、Kainuma Ryosuke、Kanomata Takeshi
    • Journal Title

      Materials

      Volume: 12 Issue: 14 Pages: 2308-2308

    • DOI

      10.3390/ma12142308

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evidence of low-energy singlet excited states in the spin-1/2 polyhedral clusters {Mo72V30} and {W72V30} with strongly frustrated kagome networks2019

    • Author(s)
      Kihara T.、Nojiri H.、Narumi Y.、Oshima Y.、Kindo K.、Heesing C.、Schnack J.、Muller A.
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 6 Pages: 64430-64430

    • DOI

      10.1103/physrevb.99.064430

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Magnetic-field-induced transition for reentrant martensitic transformation in Co-Cr-Ga-Si shape memory alloys2018

    • Author(s)
      Xu Xiao、Kihara Takumi、Miyake Atsushi、Tokunaga Masashi、Kanomata Takeshi、Kainuma Ryosuke
    • Journal Title

      Journal of Magnetism and Magnetic Materials

      Volume: 466 Pages: 273-276

    • DOI

      10.1016/j.jmmm.2018.07.011

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Observation of inverse magnetocaloric effect in magnetic-field-induced austenite phase of Heusler alloys Ni41Co9Mn31.5Ga18.52020

    • Author(s)
      T. Kihara, T. Roy, X. Xu, A. Miyake, M. Tsujikawa, H. Mitamura, M. Tokunaga, Y. Adachi, and T. Kanomata
    • Organizer
      Asia-Pacific Conference on Research in High Magnetic Fields
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ホイスラー合金Ni41Co9Mn31.5Ga18.5の磁場誘起オーステナイト相における負の磁気熱量効果2020

    • Author(s)
      木原工, Xiao Xu, 三宅厚志, Tufan Roy, 三田村幸裕, 徳永将史, 安達義也, 鹿又武
    • Organizer
      日本金属学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] メタ磁性形状記憶合金Ni50-xCoxMn31.5Ga18.5 (x = 9 and 9.7)の磁気相図2020

    • Author(s)
      木原工, Xiao Xu, 三宅厚志, 木下雄斗, 徳永将史, 安達義也, 鹿又武
    • Organizer
      日本金属学会春期講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] メタ磁性形状記憶合金Ni50-xCoxMn31.5Ga18.5 (x = 9 and 9.7)の磁気熱量効果測定2020

    • Author(s)
      木原工, Xiao Xu, 三宅厚志, Tufan Roy, 三田村幸裕, 徳永将史, 安達義也, 鹿又武
    • Organizer
      日本金属学会春期講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] メタ磁性形状記憶合金Ni50-xCoxMn31.5Ga18.5 (x = 9 and 9.7)における磁場誘起バリアント再配列2019

    • Author(s)
      木原工, Xiao Xu, 三宅厚志, 木下雄斗, 徳永将史, 安達義也, 鹿又武
    • Organizer
      強磁場科学研究会「強磁場コラボラトリーによる強磁場科学の新展開」
    • Related Report
      2019 Research-status Report
  • [Presentation] メタ磁性形状記憶合金NiCoMnGaおよびNiCoMnInの電子構造とその強磁場効果2019

    • Author(s)
      木原工, 許皛, 三宅厚志, 徳永将史, 三田村裕幸, 木下雄斗, Tufan Roy, 安達義也, 鹿又武
    • Organizer
      日本物理学会年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Direct Measurement System of Magnetocaloric Effect under Pulsed High Magnetic Field and its Application to Metamagnetic Shape Memory alloys2018

    • Author(s)
      T. Kihara, X. Xu, A. Miyake, M. Tokunaga, Y. Adachi, T. Kanomata
    • Organizer
      Thermag VIII
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Magnetic and Magnetocaloric Properties in Metamagnetic Shape Memory Alloys NiCoMnGa and NiCoMnIn2018

    • Author(s)
      T. Kihara, X. Xu, A. Miyake, M. Tokunaga, Y. Adachi, T. Kanomata
    • Organizer
      International Conference on Research in High Magnetic Fields
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] メタ磁性形状記憶合金におけるマルチカロリック効果の研究2018

    • Author(s)
      木原工, 許皛, 三宅厚志, 徳永将史, 三田村裕幸, 安達義也, 鹿又武
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi