Pressure dependence of far-infrared reflectance spectra in layered iron oxide LuFe₂O₄

• Go T.

  Department of Physical Science, Graduate School of Science, Osaka Prefecture University

• Okamura H.

  Department of Physics, Graduate School of Science, Kobe University present address : Department of Chemical Science and Technology, The University of Tokushima

• Oohata G.

  Department of Physical Science, Graduate School of Science, Osaka Prefecture University

• Nagata T.

  College of science and technology, Nihon University

• Moriwaki T.

  SPring-8, Japan Synchrotron Radiation Research Institute (JASRI)

• Ikemoto Y.

  SPring-8, Japan Synchrotron Radiation Research Institute (JASRI)

• Mori S.

  Department of Materials Science, Osaka Prefecture University

• Ikeda N.

  Department of Physics, Faculty of Science, Okayama University

• Mizoguchi K.

  Department of Physical Science, Graduate School of Science, Osaka Prefecture University

抄録

The far-infrared reflectance spectra of layered iron oxide LuFe₂O₄ have been investigated at external pressure up to 8 GPa. The observed phonon modes continuously shift to the higher energy side with increasing pressure below 6 GPa. However, it is found that the spectral profile of the phonon modes drastically changes around 6 GPa. From the analysis of the phonon modes using a Lorentz oscillator model, it is shown that the spectral changes correspond to a structural phase transition that occurs at 6 GPa.

収録刊行物

• Transactions of the Materials Research Society of Japan

  Transactions of the Materials Research Society of Japan 41 (1), 109-112, 2016

  一般社団法人 日本MRS

キーワード

• far-infrared
• high pressure
• electronic ferroelectric material
• electron-phonon interaction
• LuFe₂O₄

詳細情報

• CRID: 1390282680488543360
• NII論文ID: 130005126121
• DOI: 10.14723/tmrsj.41.109
• ISSN: 21881650
• ISSN: 13823469
• Web Site: https://www.jstage.jst.go.jp/article/tmrsj/41/1/41_109/_pdf
• 本文言語コード: en
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  • Crossref
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• 抄録ライセンスフラグ: 使用不可