Pressure-induced Spin State Transition in Co-Fe Cyanide

• Hanawa Hasafumi

  Department of Applied Physics, Nagoya University PRESTO, JST

• Moritomo Yutaka

  Department of Applied Physics, Nagoya University PRESTO, JST

• Tateishi Junichiro

  Department of Applied Physics, Nagoya University

• Ohishi Yasuo

  Japan Synchrotron Radiation Research Institute

• Kato Kenichi

  Japan Synchrotron Radiation Research Institute

抄録

Hydrostatic pressure effects on the structural and magnetic properties were investigated for two potassium–cobalt-iron hexacyanides, K_0.12Co[Fe(CN)₆]_0.70·4.87H₂O (high [Fe(CN)₆] vacancy concentration v) and K_0.36Co[Fe(CN)₆]_0.82·4.56H₂O (low-v). In both the compounds, we observed a pressure-induced volume transition at 300 K from the large volume (LV) phase to the small volume (SV) phase. In the high-v compound, the magnitude of the effective moment μ_eff gradually decreases with pressure increases. We ascribed it to the gradual spin state transformation of Co³⁺ from the high-spin state (S=2) to the low-spin state (S=0).

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 73 (10), 2759-2762, 2004

  一般社団法人 日本物理学会

キーワード

• Co–Fe cyanide
• spin state transition
• pressure effect

詳細情報

• CRID: 1390001204188344576
• NII論文ID: 110001979200
• NII論文ID: 210000105081
• NII論文ID: 130004538593
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.73.2759
• BIBCODE: 2004JPSJ...73.2759H
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 7121063
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7121063
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.73.2759
• 本文言語コード: en
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