Magnetic-Electronic, Conductivity, and Structural Pressure Studies of Sr2FeO4 and Sr3Fe2O7.

• Rozenberg G. Kh.

  School of Physics and Astronomy, Tel Aviv University

• Pasternak M. P.

  School of Physics and Astronomy, Tel Aviv University

• Milner A. P.

  School of Physics and Astronomy, Tel Aviv University

• Amanowicz M.

  School of Physics and Astronomy, Tel Aviv University

• Hearne G. R.

  Department of Physics , University of the Witwatersrand

• Brister K. E.

  CHESS, Wilson Lab, Cornell University

• Adler P.

  Max-Planck-Institut für Festkörperforschung

書誌事項

タイトル別名

• Magnetic-Electronic Conductivity and St

抄録

Sr₂FeO₄ and Sr₃Fe₂O₇ have been investigated by resistance-temperature, ⁵⁷Fe-Mössbauer magnetic and x-ray diffraction studies up to ∼30 GPa. Magnetic moments in Sr₂FeO₄ remain intact across the conductivity transition to a metallic state at ∼17 GPa. The complex spiral-type magnetic structure at low pressure changes to collinear in the metallic state. In Sr₃Fe₂O₇ the original disproportionated state and associated magnetic-electronic structure first exhibits a change at ∼12-15 GPa, and only a single valence state is discernible at P ≥ 21 GPa. A very narrow gapped state prevalent at ∼10 GPa undergoes a sluggish transition to incipient metallic behavior at ∼28 GPa. X-ray data suggest that the magnetic-electronic and conductivity transitions in both compounds are not driven by symmetry-lowering structural transitions.

収録刊行物

• 高圧力の科学と技術

  高圧力の科学と技術 7 653-655, 1998

  日本高圧力学会

キーワード

• high pressure
• Mössbauer spectroscopy
• x-ray diffraction
• semiconductor-metal transition
• disproportionation

詳細情報

• CRID: 1390282679357099648
• NII論文ID: 10002691318
• NII書誌ID: AN10452913
• DOI: 10.4131/jshpreview.7.653
• ISSN: 13481940
• ISSN: 0917639X
• NDL書誌ID: 4494012
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4494012
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可