SPECIFIC-HEAT AND QUADRUPOLE INTERACTIONS IN UNIAXIAL FERROELECTRICS

被引：13

作者：

NOHEDA, B

LIFANTE, G

GONZALO, JA

机构：

[1] Departamento de Fisica de Materiales, C-IV, Universidad Autonoma de Madrid, 28049, Madrid

来源：

FERROELECTRICS LETTERS SECTION | 1993年 / 15卷 / 5-6期

关键词：

D O I：

10.1080/07315179308204246

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The inclusion of quadrupolar and higher order terms into the effective field in second order transition in uniaxial ferroelectrics is shown to describe well the jump in specific heat at T congruent-to T(c) for crystals of the TGS family. It is shown that the numerical values for the coefficient g=(gamma/beta)(Nmu)2, corresponding to the quadrupolar interaction term, obtained (a) from specific heat data and (b) from spontaneous polarization data (both at T congruent-to T(c) ) are in good agreement with each other for crystals of the TGS family.

引用

页码：109 / 114

页数：6

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