Study of magnetic instability for functional materials controled by magnetic field

• Project/Area Number: 24560855
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Kagoshima University
• Principal Investigator: FUJII Shinpei 鹿児島大学, 理工学研究科, 教授 (90189994)
• Co-Investigator(Kenkyū-buntansha): KOYAMA Keiichi 鹿児島大学, 大学院理工学研究科, 教授 (70302205)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 磁気秩序秩序一次転移 / 第一原理計算 / 強磁場

Outline of Final Research Achievements

For Mn2Sb, we have investigated theoretically and experimentally whether antiferromagnetic-ferrimagnetic first-order transition occurs and whether the magnetic transition is suppressed by (a high) magnetic field or pressure (Kinetic Arrest (KA) effect). Study of stabilization of antiferromagnetism is also done. It has been found that the magnetic transition occurs for the system that Cr or Co or Cu is substituted for Mn and the one that Ge or Sn or Bi is substituted for Sb. The KA effect is observed for the former and not for the latter. The obtained result shows the possibility that the KA effect is induced by a turbulence of the magnetic sublattice　and/or by a change of an atomic environment of the magnetic atom.

Research Products

• [Journal Article] Site Preference and Stabilization of Antiferromagnetism in M-Substituted Mn_2&minus;<i>_x</i>M<i>_x</i>Sb (M = Ti, Cr, Co, or Cu) (2015)
  • Author(s): Junya Goto, Shinpei Fujii and Keiichi Koyama
  • Journal Title: MATERIALS TRANSACTIONS Volume: 56 Issue: 3 Pages: 415-423
  • DOI: 10.2320/matertrans.M2014417
  • NAID: 130004825274
  • ISSN: 1345-9678, 1347-5320
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electronic and Magnetic Properties of Mn₂Sb_1&minus;<i>_x</i>As<i>_x</i> (<I>x</I> = 0,0.5,1) (2014)
  • Author(s): Takatoshi Kakimoto, Junya Goto, Shinpei Fujii, Keiichi Koyama and Shoji Ishida
  • Journal Title: MATERIALS TRANSACTIONS Volume: 55 Issue: 12 Pages: 1878-1884
  • DOI: 10.2320/matertrans.M2014251
  • NAID: 130004713120
  • ISSN: 1345-9678, 1347-5320
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Magnetic field effect on magnetic and electrical properties of Mn2-xCuxSb (2014)
  • Author(s): Y. Matsumoto, H. Orihashi, K. Matsubayashi, Y. Uwatoko, M. Hiroi, K. Koyama
  • Journal Title: IEEE Trans. Magn. Volume: 50 Issue: 1 Pages: 1-4
  • DOI: 10.1109/tmag.2013.2279536
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electronic and Magnetic Structures of Cobalt Substituted Mn₂Sb (2013)
  • Author(s): 後藤 純哉, 柿本 貴俊, 藤井 伸平, 小山 佳一
  • Journal Title: Journal of the Japan Institute of Metals and Materials Volume: 77 Issue: 10 Pages: 461-465
  • DOI: 10.2320/jinstmet.JAW201303
  • NAID: 10031201582
  • ISSN: 0021-4876, 1880-6880, 2433-7501
  • Peer Reviewed
• [Journal Article] Magnetic and Electronic Structures of Cobalt or Copper Substituted Mn₂Sb (2013)
  • Author(s): Junya Goto, Takatoshi Kakimoto, Shinpei Fujii and Keiichi Koyama
  • Journal Title: MATERIALS TRANSACTIONS Volume: 54 Issue: 12 Pages: 2309-2312
  • DOI: 10.2320/matertrans.M2013327
  • NAID: 130004455042
  • ISSN: 1345-9678, 1347-5320
  • Peer Reviewed
• [Journal Article] Magnetic Field Effect on Magnetic and Electrical Properties of Mn2-xCuxSb (2013)
  • Author(s): Yoshihiro Matsumoto, Hiroki Orihashi, Masahiko Hiroi and Keiichi Koyama, Kazuyuki Matsubayashi and Yoshiya Uwatoko
  • Journal Title: IEEE Transactions on Magnetics Volume: 50
  • Peer Reviewed
• [Journal Article] Magnetic properties of Mn2-xCoxSb (x = 0.17, 0.2) under high magnetic fields (2012)
  • Author(s): 7. H. Orihashi, D. Mitsunaga, M. Hiroi, Y. Mitsui, K. Takahashi, K. Watanabe, K. Matsubayashi, Y. Uwatoko, and K. Koyama
  • Journal Title: Rep. Fac.Sci. Kagoshima Univ. Volume: 45 Pages: 43-49
• [Presentation] Mn2-xCoxSbの磁気状態と原子位置 ‐実験との比較‐ (2015)
  • Author(s): 後藤純哉、藤井伸平、小山佳一
  • Organizer: 金属学会
  • Place of Presentation: 東京大学 駒場I地区キャンパス (東京都、目黒区）
  • Year and Date: 2015-03-18 – 2015-03-20
• [Presentation] Mn2-xCuxSbの高圧化における磁気状態 (2014)
  • Author(s): 松本佳大、小山佳一、 松林和幸、上床美也
  • Organizer: 日本物理学会九州支部例会
  • Place of Presentation: 崇城大学 （熊本県、熊本市）
  • Year and Date: 2014-12-06
• [Presentation] Mn1.75Co0.25SbのCoの不規則性と磁気状態 (2014)
  • Author(s): 後藤純哉、藤井伸平、小山佳一
  • Organizer: 金属学会
  • Place of Presentation: 名古屋大学 東山キャンパス （愛知県、名古屋市）
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] Mn2SbのMnをX(Ti, Cr, Co, Cu)で置換した物質の電子構造と磁性 (2014)
  • Author(s): 後藤 純哉, 柿本 貴俊, 藤井 伸平, 小山 佳一, 石田 尚治
  • Organizer: 金属学会
  • Place of Presentation: 東京工業大学
• [Presentation] Mn2Sb系メタ磁性体の高圧化における磁気状態 (2014)
  • Author(s): 松本 佳大, 小山 佳一,松林 和幸, 上床 美也
  • Organizer: 物理学会
  • Place of Presentation: 東海大学
• [Presentation] Magnetic and Electronic Structures of Co or Cu substituted Mn2Sb (2013)
  • Author(s): Junya Goto, Takatoshi Kakimoto, Shinpei Fujii and Keiichi Koyama
  • Organizer: ISAMMA
  • Place of Presentation: Taichung, Taiwan
• [Presentation] Magnetic Field Effect on Magnetic and Electrical Properties of Mn2-xCuxSb (2013)
  • Author(s): Yoshihiro Matsumoto, Hiroki Orihashi, Masahiko Hiroi and Keiichi Koyama, Kazuyuki Matsubayashi and Yoshiya Uwatoko
  • Organizer: ISAMMA
  • Place of Presentation: Taichung, Taiwan
• [Presentation] Magnetic properties of Mn2Sb1-xZx (Z=Ge, Sn) (2013)
  • Author(s): Keiichi Koyama, Daisuke Shimada, Hiroki Orihashi,Daisuke Mitsunaga and Masahiko Hiroi,Kazuyuki Matsubayashi and Yoshiya Uwatoko,Reisho Onodera, Shojiro Kimura and Kohoki Takahashi
  • Organizer: ISAMMA
  • Place of Presentation: Taichung, Taiwan
• [Presentation] CoMnSbにおける磁気転移に伴う電子比熱係数増大の要因 (2013)
  • Author(s): 後藤 純哉, 柿本 貴俊, 藤井伸平, 小山 佳一
  • Organizer: 金属学会
  • Place of Presentation: 金沢大学
• [Presentation] Mn2Sbでの反強磁性安定化の機構 (2013)
  • Author(s): 柿本 貴俊, 後藤 純哉, 藤井伸平, 小山 佳一
  • Organizer: 金属学会
  • Place of Presentation: 金沢大学
• [Presentation] Mn2-xCuxSbの強磁場下における磁気特性および電気的特性 (2013)
  • Author(s): 松本 佳大, 折橋 広樹, 廣井 政彦, 小山 佳一,松林 和幸, 上床 美也
  • Organizer: 金属学会
  • Place of Presentation: 金沢大学
• [Presentation] 第3元素置換によるMn2Sbの電子構造と磁性 (2013)
  • Author(s): 後藤 純哉, 柿本 貴俊, 小山 佳一, 藤井伸平
  • Organizer: 物理学会
  • Place of Presentation: 徳島大学
• [Presentation] Mn2Sb0.5As0.5の電子構造と磁性 (2013)
  • Author(s): 柿本 貴俊, 後藤 純哉, 藤井伸平, 小山 佳一
  • Organizer: 物理学会九州支部
  • Place of Presentation: 久留米工業大学
• [Presentation] Mn2Sb1-xZx (Z = Ge, Sn, 0.05 <= x <= 0.2) の磁気特性 (2013)
  • Author(s): 島田大輔、小山佳一、他９名
  • Organizer: 日本金属学会春期講演大会
  • Place of Presentation: 東京
• [Presentation] 圧力下におけるMn2-xCoxSbの磁気緩和 (2013)
  • Author(s): 折橋広樹、小山佳一、他２名
  • Organizer: 日本物理学会
  • Place of Presentation: 広島
• [Presentation] Co置換した Mn2Sbの電子構造と磁性 (2013)
  • Author(s): 後藤純哉, 柿本貴俊, 藤井伸平, 小山佳一
  • Organizer: 日本金属学会春期講演大会
  • Place of Presentation: 東京
• [Presentation] X-ray diffraction study on crystal structure of Mn1.8Co0.2Sb under high magnetic fields (2012)
  • Author(s): H. Orihashi, K. Koyama, et al.
  • Organizer: The 19th International Conference on Magnetism
  • Place of Presentation: Busan, Korea
• [Presentation] Magnetic properties of Mn2Sb1-xGex（0.05 <= x <= 0.2）in high magnetic fields (2012)
  • Author(s): H. Shimada, K. Koyama, et al.
  • Organizer: The 19th International Conference on Magnetism
  • Place of Presentation: Busan, Korea
• [Presentation] 圧力下におけるMn2-xCoxSbの磁気特性 (2012)
  • Author(s): 折橋広樹、小山佳一 他２名
  • Organizer: 応用物理学会秋季大会
  • Place of Presentation: 松山
• [Presentation] 強磁場下におけるMn2Sb1-xGex（0.05 <= x <= 0.2）の磁気特性 (2012)
  • Author(s): 島田大輔、小山佳一 他２名
  • Organizer: 応用物理学会秋季大会
  • Place of Presentation: 松山
• [Presentation] Mn2-xCoxSbの磁気緩和 (2012)
  • Author(s): 折橋広樹、小山佳一 他２名
  • Organizer: 日本金属学会秋期大会
  • Place of Presentation: 松山
• [Presentation] Mn2Sb1-xGex（0.05 <= x <= 0.2）の強磁場下磁気特性 (2012)
  • Author(s): 島田大輔、小山佳一、他8名
  • Organizer: 日本金属学会秋期大会
  • Place of Presentation: 松山
• [Presentation] Mn2Sb-Mn2As系の電子構造と磁性 (2012)
  • Author(s): 柿本 貴俊, 折橋 広樹, 藤井伸平, 小山 佳一
  • Organizer: 日本金属学会秋期大会
  • Place of Presentation: 松山
• [Presentation] Mn2Sb1-xGex（0.05 <= x <= 0.2）の磁気特性 (2012)
  • Author(s): 島田大輔、小山佳一、他７名
  • Organizer: 日本物理学会
  • Place of Presentation: 佐賀
• [Presentation] Mn2-xCuxSbの伝導特性 (2012)
  • Author(s): 松本佳大、小山佳一、他２名
  • Organizer: 応用物理学会九州支部講演会
  • Place of Presentation: 佐賀
• [Presentation] Mn2Sb およひCo置換した Mn2Sbの電子構造と磁性 (2012)
  • Author(s): 後藤純哉, 柿本貴俊, 藤井伸平, 小山佳一
  • Organizer: 応用物理学会九州支部講演会
  • Place of Presentation: 佐賀