Spontaneous polarization in the tetragonal, orthorhombic and rhombohedral phases of KNbO3

被引：0

作者：

Toumanari, Ahmed ^{[1
]}

El-frikhe, Es-said ^{[1
]}

Khatib, Driss ^{[1
]}

机构：

[1] Fac Sci, Dept Phys, Lab Phys Solide Theor, BP 8106, Agadir 80000, Morocco

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 9 | 2006年 / 3卷 / 09期

关键词：

D O I：

10.1002/pssc.200567122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spontaneous polarization and the refractive indices in the tetragonal, orthorhombic and rhombohedral phases of KNbO3 are discussed quantitatively from the microscopic consideration. The shift of the Nb ion situated at the centre of the lattice is calculated at various temperatures from the mean field approximation model. The spontaneous polarization has been calculated by the dipole-dipole model using the calculated values of the shift of the Nb ions, the vertical strains and the shearings. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3351 / +

页数：2

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