Multilevel genetic-algorithm optimization of the thermodynamic analysis of the incommensurate phase in ferroelectric Sn2P2Se6 -: art. no. 064103

被引：15

作者：

Berezovsky, SV ^{[1
]}

Korda, VY ^{[1
]}

Klepikov, VF ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Sci & Technol Ctr Electrophys, UA-61002 Kharkov, Ukraine

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.64.064103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Interesting experimental properties of the incommensurate phase in ferroelectric Sn2P2Se6 are explained in the framework of Landau-type phenomenological theory. The unique procedure of multilevel genetic-algorithm optimization is implemented to find parameters of the thermodynamic potential. It is shown that the temperature dependence of the polarization wave number in the incommensurate phase can be, correctly described simultaneously with the anomalous heat capacity only when the nonlinear properties of the order parameter distribution are taken into account.

引用

页数：7

共 28 条

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