Relationship between magnetic structure and ferroelectricity of LiVCuO4

• Yasui Yukio

  Department of Physics, Division of Material Science, Nagoya University

• Naito Yutaka

  Department of Physics, Division of Material Science, Nagoya University

• Sato Kenji

  Department of Physics, Division of Material Science, Nagoya University

• Moyoshi Taketo

  Department of Physics, Division of Material Science, Nagoya University

• Sato Masatoshi

  Department of Physics, Division of Material Science, Nagoya University

• Kakurai Kazuhisa

  Quantum Beam Science Directorate, Japan Atomic Energy Agency

書誌事項

タイトル別名

• Relationship between Magnetic Structure and Ferroelectricity of LiVCuO<SUB>4</SUB>

抄録

Neutron scattering studies and measurements of the dielectric susceptibility ε and ferroelectric polarization P have been carried out under various magnetic fields H for single-crystal samples of the multiferroic system LiVCuO₄ with quasi one-dimensional spin 1/2 Cu²⁺ chains formed of edge-sharing CuO₄ square planes, and the relationship between the magnetic structure and ferroelectricity has been studied. The ferroelectric polarization is significantly suppressed by the magnetic field H above 2 T applied along the a and b axes. When H=0, a helical magnetic structure with the helical axis parallel to c has been confirmed. The magnetic structure under the field along a has been determined, where the ab-plane structure changes to the helical one with the helical axis parallel to H with increasing the field through ∼2 T. The ferroelectric polarization along a at H=0 is found to be proportional to the neutron magnetic scattering intensity, indicating that the magnetic order is closely related to the appearance of the ferroelectricity. The relationship between the magnetic structure and ferroelectricity of LiVCuO₄ is discussed by considering the existing theories.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 77 (2), 023712-023712, 2008

  一般社団法人 日本物理学会

キーワード

• LiVCuO<SUB>4</SUB>
• multiferroic
• ferroelectricity
• neutron scattering
• helical magnetic order

詳細情報

• CRID: 1390001204198344960
• NII論文ID: 130005436327
• NII論文ID: 110006613880
• NII論文ID: 210000107087
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.77.023712
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 9377432
• Web Site: http://id.ndl.go.jp/bib/9377432
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9377432
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.77.023712
• 本文言語コード: en
• データソース種別:
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