Analysis of pyroelectric and dielectric measurements on boracites
Analysis of pyroelectric and dielectric measurements on boracites
复制标题
方硼石的热释电和介电测量分析
DOI：
10.1080/00150198108218155
复制
发表时间：
1981
期刊：
影响因子：
0.8
通讯作者：
A. Shaulov
中科院分区：
文献类型：
--
作者：
W. A. Smith;M. Rosar;A. Shaulov
根据Dvorak和Petzelt以及Gufan和Sakhnenko提出的铁电体双斜方晶相变的热力学模型，分析了FeI、CuCl和MnI硼酸盐的介电常数和热释电系数随温度的变化关系。其热力学势的简化形式在大的温度区间上产生可接受的数据拟合。然而，从拟合中得到的参数值与通常系统忽略电位中的高阶项并不一致。
Abstract The measured temperature dependence of the dielectric constant and pyroelectric coefficient in FeI, CuC1 and MnI boracites are analyzed according to the thermodynamic model advanced by Dvorak and Petzelt and by Gufan and Sakhnenko for the ferroelectric cubic-orthorhombic phase transition. A simplified form of their thermodynamic potential yields acceptable fits to the data over a large temperature interval. The values of the parameters obtained from the fits, however, are not consistent with the usual systematic neglect of high-order terms in the potential.