Development of electric-field-induced Mossbauer spectroscopy toward observation of non-equilibrium states

• Project/Area Number: 26600022
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: Okabayashi Jun 東京大学, 理学(系)研究科(研究院), 准教授 (70361508)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: Mossbauer spectroscopy / external field / Debye-Waller factor / メスバウアー分光 / 外場印加

Outline of Final Research Achievements

Mossbauer spectroscopy is a powerful technique to investigate the local electronic and magnetic structures around Fe sites. We have developed novel techniques adding the electric-field induced Mossbauer spectroscopy. We prepared the sample holder for applying the electric field during Mossbauer spectroscopy with conversion electron Mossbauer spectroscopy (CEMS). We obtained the results in the temperature dependent Debye-Waller factors in Mossbauer spectra in novel magnetic complexes, which is comparable to the spectra in X-ray absorption. This research opens up the new basic concept adding the physical parameters of electric field into Mossbauer spectroscopy.

Research Products

• [Journal Article] Ligand 4-X pyridine (X = Cl, Br, I) dependence in Hofmann-type spin crossover complexes: Fe(4-Xpyridine)2[Au(CN)2]2 (2016)
  • Author(s): J. Okabayashi
  • Journal Title: Inorganica Chimica Acta Volume: 445 Pages: 17-21
  • Peer Reviewed
• [Journal Article] Temperature-dependent EXAFS study for spin crossover complex: Fe(pyridine)2Ni(CN)4 (2015)
  • Author(s): Jun Okabayashi
  • Journal Title: Inorganica Chimica Acta Volume: 426 Pages: 142-145
  • Peer Reviewed
• [Journal Article] Structural, Electronic, and Magnetic Properties of Novel Spin-Crossover Complex: Fe(butyl nicotinate)2[Au(CN)2]2 (2015)
  • Author(s): S. Ueno, J. Okabayshi et al.
  • Journal Title: Bull. Chem. Soc. Jpn. Volume: 88 Pages: 551-554
  • Peer Reviewed
• [Presentation] メスバウアー分光およびXAFSから見たデバイワラー因子についての考察 (2016)
  • Author(s): J. Okabayashi
  • Organizer: メスバウアー分光研究会
  • Place of Presentation: 首都大学東京
  • Year and Date: 2016-03-17
• [Presentation] メスバウアー分光およびXAFSから見たデバイワラー因子についての考察 (2016)
  • Author(s): J. Okabayashi
  • Organizer: 先進的放射光メスバウアー分光研究会
  • Place of Presentation: 名古屋工業大学
  • Year and Date: 2016-03-03
• [Presentation] Fe2+を含むスピンクロスオーバー錯体のXAFSとメスバウアースペクトルの比較 (2015)
  • Author(s): 岡林潤
  • Organizer: メスバウアー分光研究会
  • Place of Presentation: 東京大学
  • Year and Date: 2015-03-17 – 2015-03-18
• [Presentation] 多段階スピンクロスオーバー転移を示すFe2+を含む磁性錯体のXAFS測定 (2015)
  • Author(s): 岡林潤
  • Organizer: 日本放射光学会
  • Place of Presentation: 立命館大学
  • Year and Date: 2015-01-11 – 2015-01-13
• [Presentation] シアノ基で架橋されたFeNi錯体のスピンクロスオーバー現象におけるXAFSとメスバウアースペクトルの相関 (2014)
  • Author(s): 岡林潤
  • Organizer: 日本XAFS討論会
  • Place of Presentation: 徳島大学
  • Year and Date: 2014-09-01 – 2014-09-03