Low Temperature Phase Transition of an Orthorhombic Tungsten Bronze Ferroelectric Sr2-x Cax NaNb5 O15
ZHONG Weilie, ZHANG Peilin, ZHAO Huansui, HAN Zhaozhong* , CHEN Huanchu*
Department of Physics, Shandong University, Jinan 250100
* Institute of Crystal Materials, Shandong University, Jinan 250100
Low Temperature Phase Transition of an Orthorhombic Tungsten Bronze Ferroelectric Sr2-x Cax NaNb5 O15
ZHONG Weilie;ZHANG Peilin;ZHAO Huansui;HAN Zhaozhong* ;CHEN Huanchu*
Department of Physics, Shandong University, Jinan 250100
* Institute of Crystal Materials, Shandong University, Jinan 250100
关键词 ：
77.80.-e
Abstract ： The dielectric and pyroelectric properties of a new ferroelectric crystal with orthorhombic tungsten bronze structure Sr2-x Cax NaNb5 O15 have been investigated in the temperature range of 300 to 10 K. Based on anomalies in the properties and by use of Curie's principle of symmetry, a ferroelectric-ferroelectric phase transition between mm2 and m is found to occur at about 75K. On cooling through the transition, the spontaneous polarization deviates by about two degrees from the two-fold axis [001] to[h0l] direction in the mirror plane.
Key words ：
77.80.-e
出版日期: 1993-03-01
:
77.80.-e
(Ferroelectricity and antiferroelectricity)
引用本文:
ZHONG Weilie;ZHANG Peilin;ZHAO Huansui;HAN Zhaozhong*;CHEN Huanchu*. Low Temperature Phase Transition of an Orthorhombic Tungsten Bronze Ferroelectric Sr2-x Cax NaNb5 O15 [J]. 中国物理快报, 1993, 10(3): 183-185.
2-x Cax NaNb5 O15 . Chin. Phys. Lett., 1993, 10(3): 183-185.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1993/V10/I3/183
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1993, Vol. 10 
