Local magnetic structural analysis using magnetic pair distribution function

• Project/Area Number: 16K05023
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Kodama Katsuaki 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, 研究主幹 (10313115)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 磁気対相関関数 / 中性子散乱 / 局所磁気構造解析 / 中性子 / 磁性 / 対相関関数

Outline of Final Research Achievements

We derive an equation of magnetic pair distribution function (mPDF) including the additional term related to spontaneous magnetization considering the so-called zero scattering component. Quantitative estimation of mPDF from neutron diffraction data is also shown. The experimental mPDF of the standard samples are quantitatively consistent with the mPDFs calculated by the presented equation, showing the validities of the present mPDF equation and estimation of the experimental mPDF. The mPDF of spin-glass material shows the competition of two different magnetic structures suggested by preceding studies. Our results enable the quantitative local magnetic analysis using mPDF and show the availability of the mPDF analysis to the short-range magnetic correlation.

Academic Significance and Societal Importance of the Research Achievements

本研究課題により磁気対相関関数と用いた磁気構造解析（磁気PDF解析）がほぼ可能になったことから、短距離周期しかもたない磁気配列の決定がより容易になったと考えられる。この手法を利用し、さらに発展させていくことにより、スピン液体やスピングラスといった物理的に興味深い現象についての理解や、磁性微粒子や磁性薄膜など磁性材料の機能向上につながる情報が得られることが期待される。

Research Products

• [Int'l Joint Research] マックスプランク研究所(ドイツ)
• [Journal Article] Local Disorder in Proton Conductor BaSn_0.5In_0.5O_2.75 Analyzed by Neutron Diffraction/ Atomic Pair Distribution Function (2018)
  • Author(s): Igawa Naoki、Kodama Katsuaki、Taguchi Tomitsugu、Yoshida Yukihiko、Matsukawa Takeshi、Hoshikawa Akinori、Ishigaki Toru
  • Journal Title: Transactions of the Materials Research Society of Japan Volume: 43 Issue: 6 Pages: 329-332
  • DOI: 10.14723/tmrsj.43.329
  • NAID: 130007539695
  • ISSN: 1382-3469, 2188-1650
  • Year and Date: 2018-12-01
  • Peer Reviewed
• [Journal Article] Nanoscale ice-type structural fluctuation in spinel titanetes (2018)
  • Author(s): S. Torigoe, T. Hattori, K. Kodama, T. Honda, H. Sagayama, K. Ikeda, T. Otomo, H. Nitani, H. Abe, H. Murakawa, \underline{H. Sakai}, and N. Hanasaki
  • Journal Title: Phys. Rev. B Volume: 98 Issue: 13 Pages: 134443-134443
  • DOI: 10.1103/physrevb.98.134443
  • Peer Reviewed
• [Journal Article] High-energy spin fluctuation in low-Tc iron-based superconductor LaFePO0.9 (2018)
  • Author(s): Ishikado Motoyuki、Shamoto Shin-ichi、Kodama Katsuaki、Kajimoto Ryoichi、Nakamura Mitsutaka、Hong Tao、Mutka Hannu
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 16343-16343
  • DOI: 10.1038/s41598-018-33878-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Neutron-scattering study of yttrium iron garnet (2018)
  • Author(s): S. Shamoto, T. U. Ito, H. Onishi, H. Yamauchi, Y. Inamura, M. Matsuura, M. Akatsu, K. Kodama, A. Nakao, T. Moyoshi, K. Munakata,T. Ohhara, M. Nakamura, S. Ohira-Kawamura, Y. Nemoto, and K. Shibata
  • Journal Title: Physical Review B Volume: 97 Issue: 5 Pages: 1-9
  • DOI: 10.1103/physrevb.97.054429
  • Peer Reviewed / Open Access
• [Journal Article] Alternative Equation on Magnetic Pair Distribution Function for Quantitative Analysis (2017)
  • Author(s): K. Kodama, K. Ikeda, S. Shamoto, and T. Otomo
  • Journal Title: Journal of the Physical Society of Japan Volume: 86 Issue: 12 Pages: 124708-124708
  • DOI: 10.7566/jpsj.86.124708
  • Peer Reviewed
• [Journal Article] Local Structural Analysis of Half-Metallic Ferromagnet CrO2. (2016)
  • Author(s): K. Kodama, K. Ikeda, M. Isobe, H. Takeda, M. Itoh, Y. Ueda, S. Shamoto, and T. Otomo
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 9 Pages: 094709-094709
  • DOI: 10.7566/jpsj.85.094709
  • NAID: 210000134092
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] J-PARC高強度全散乱装置NOVAを用いた磁気PDF解析法の開発 (2018)
  • Author(s): 樹神克明、本田孝志、池田一貴、社本真一、大友季哉
  • Organizer: 日本中性子科学会
• [Presentation] 磁気PDF解析を用いたMn0.5Fe0.5TiO3のスピングラス状態における短距離磁気相関の観測 (2018)
  • Author(s): 樹神克明、本田孝志、池田一貴、社本真一、大友季哉
  • Organizer: 量子ビームサイエンスフェスタ
• [Presentation] NOVAを用いた磁気PDF解析法の開発 (2017)
  • Author(s): 樹神克明、池田一貴、社本真一、大友季哉
  • Organizer: 量子ビームサイエンスフェスタ
  • Place of Presentation: つくば国際会議場（茨城県つくば市）
  • Year and Date: 2017-03-14
• [Presentation] 原子対相関関数を用いた強相関電子系の局所構造解析 (2017)
  • Author(s): 樹神克明
  • Organizer: 日本磁気学会 第60回化合物磁性材料専門研究会
• [Presentation] 中性子PDF解析でみる強相関電子系の局所構造歪み (2017)
  • Author(s): 樹神克明
  • Organizer: 放射光利用研究セミナー「結晶PDFで観る短距離~中距離レンジ構造の世界」
• [Presentation] J-PARC全散乱装置NOVAを用いた磁気PDF解析法の開発 (2017)
  • Author(s): 樹神克明、池田一貴、社本真一、大友季哉
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 磁気対相関関数によるスピングラス系Mn0.5Fe0.5TiO3の局所磁気構造の観測 (2017)
  • Author(s): 樹神克明、本田孝志、池田一貴、社本真一、大友季哉
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 原子対相関関数を用いた鉄系超伝導体母相の局所構造解析 (2017)
  • Author(s): 樹神克明、石角元志、池田一貴、社本真一、大友季哉
  • Organizer: 日本中性子科学会年会
• [Presentation] Local Structural Analysis on the Parent Compound of Iron-Based Superconductor PrFeAsO by Atomic Pair Distribution Function (2017)
  • Author(s): K. Kodama, M. Ishikado, K. Ikeda, S. Shamoto, and T. Otomo
  • Organizer: The 15th International Conference on Advanced Materials
  • Int'l Joint Research