Ferroelectricity in CH_3NH_3AlBr_4
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概要
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The dielectric properties of single-crystal CH3NH3AlBr,j have been studied. The crystal be-longs to the tetragonal system at room temperature. It shows ferroelectricity along the a-direction below the Curie temperature T. : 76.6 K. The dielectric constant along the o-directuonobeys a Curie Weiss law above T. with the Curie constant being 3.7 x 10' K. The spontaneouspolarization measured by means of 50 Hz hysteresis loop at 64K is 6.6 X 10 ' C / m'. Besides theferroelectric transition, a first order structural phase transition is found at about 250 K.
- 社団法人日本物理学会の論文
- 1996-03-15
著者
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Gesi Kazuo
Department Of Materials Science College Of Science And Engineering Iwaki Meisei University
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Gesi Kazuo
Department Materials Science College Of Science And Engineering Iwaki Meisei University
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