Thermal and Dielectric Properties of a New Ferroelectric LaBGeO5
Thermal and Dielectric Properties of a New Ferroelectric LaBGeO5
复制标题
新型铁电 LaBGeO5 的热性能和介电性能
DOI:
10.1143/jpsj.62.4311
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发表时间:
1993
影响因子:
1.7
通讯作者:
Y. Uesu
中科院分区:
文献类型:
--
作者:
A. Onodera;B. Strukov;A. Belov;S. Taraskin;H. Haga;H. Yamashita;Y. Uesu
Thermal and dielectric properties of LaBGeO 5 , a new ferroelectric with a stillwellite-type structure are investigated. The specific heat, C p , shows one clear anomaly (Δ S =0.114 R) at 802.5 K. The basic thermodynamic parameters are determined on the basis of the Landau theory. However, an additional hump in C p was found in a different sample just above T c . This dependence on samples is confirmed by the measurements of dielectric constants. The appearance of the new intermediate phase may be caused by some impurities or defects. The Rhodes-Wohlfarth plot suggests that the nature of the phase transitions is of the displacive-type.
DOI:
--
发表时间:
2005
期刊:
J.Korean Phys.Soc. 46
影响因子:
--
作者:
Y.Akishige;H.Shigematsu;A.Kitahara;I.Takahashi
通讯作者:
I.Takahashi