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Ferroelectrics Volume 378, 2009 - Issue 1
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Original Articles

Structure and Physical Properties of Metastable Hexagonal LuFeO3

Atsunobu Masuno Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo, 153-8505, Japan
,
Soichiro Sakai Department of Physical Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
,
Yasutomo Arai Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, 305-8505, Japan
,
Hiroshi Tomioka Advanced Engineering Services Co Ltd., Tsukuba, Ibaraki, 305-0032, Japan
,
Fumiaki Otsubo Advanced Engineering Services Co Ltd., Tsukuba, Ibaraki, 305-0032, Japan
,
Hiroyuki Inoue Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo, 153-8505, Japan
,
Chikako Moriyoshi Department of Physical Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
,
Yoshihiro Kuroiwa Department of Physical Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
&
Jianding Yu Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, 305-8505, Japan
 show all
Pages 169-174 | Received 15 Jun 2008, Published online: 20 Sep 2010
 
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Abstract

Metastable Lu x FeO 3 polycrystals (0.65 < x < 1.35) have been synthesized by containerless processing. Synchrotron-radiation powder diffraction analysis and scanning electron microscope observation have shown them to be in three metastable phases. The crystal structure of one of these phases was assigned to a polar space group P6 3 cm with the composition of LuFeO 3 , which has a similar structure as that of hexagonal YMnO 3 . A characteristic dielectric relaxation with strong frequency dispersion of the hexagonal LuFeO 3 was observed above room temperature.

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