A Study of Structures and Order Parameters in Antiferroelectric PbHfO_3 by Synchrotron Radiation(Condensed Matter : Structure, Mechanical and Thermal Properties)

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概要

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• We present structures of PbHfO_3 between 100 and 525 K analyzed by a Rietveld method using synchrotron radiation. Spontaneous strain of a perovskite sublattice could be excellently expressed by a conventional phenomenological theory in a room-temperature antiferroelectric phase. Pb shifts along the a-axis and the square root of the spontaneous strain showed similar dependence on temperature as expected from the theory below 200K, while one of the shifts showed a slight deviation at high temperature. Disordered arrangement of Pb atoms in the cubic phase was found as in the cubic phase of PbZrO_3, though the direction of the disorder in PbHfO_3 was not so obvious as that in PbZrO_3.

• 社団法人日本物理学会の論文
• 2005-10-15

著者

• Kindo K

  Advanced Science Research Center Japan Atomic Energy Agency

• NISHIBORI Eiji

  Department of Applied Physics, Nagoya University

• SAKATA Makoto

  Department of Applied Physics, Nagoya University

• Kindo Koichi

  Research Center For Materials Science At Extreme Conditions Osaka University

• 田口 政義

  日大生産工

• Kindo K

  Kyokugen Osaka University

• Takata M

  Department Of Physics Division Of Material Science Nagoya University

• Taniguchi Masaki

  Grad. Sch. Sci. Hiroshima Univ.:hsrc Hiroshima Univ.

• KATO Kenichi

  SPring-8, JASRI

• TAKATA Masaki

  SPring-8/RIKEN

• Kosuge Koji

  Department Of Chemistry Graduate School Of Science Kyoto University

• FUJISHITA Hideshi

  Department of Physics, Kanazawa University

• ISHIKAWA Yuya

  Department of Physics, Kanazawa University

• OGAWAGUCHI Akira

  Department of Physics, Kanazawa University

• Takata Masaki

  Jasri Spring-8

• Sakata Makoto

  Department Of Applied Physics Faculty Of Engineering Nagoya University

• Nishibori E

  Department Of Applied Physics Nagoya University

• Ishikawa Yuya

  Department Of Physics Kanazawa University

• Takata Masaki

  Japan Synchrotron Radiation Research Institute/spring-8

• Ishikawa Y

  Physics Department Tohoku University

• Ishikawa Y

  Tohoku Univ. Sendai Jpn.

• Koga K

  Department Of Superconductivity University Of Tokyo

• Ogawaguchi Akira

  Division Of Mathematical And Physical Sciences Kanazawa University

• Nishibori Eiji

  Department Of Applied Physics Nagoya University

• Fujishita H

  Division Of Mathematical And Physical Sciences Kanazawa University

• Fujishita Hideshi

  Department Of Physics College Of Liberal Arts Kanazawa University

• KATO Kenichi

  SPring-8 JASRI:CREST, JST

• TAKATA Masaki

  SPring-8 JASRI:CREST, JST

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