Temperature dependent second order susceptibility in BaTiO3

被引：2

作者：

Dubey, A ^{[1
]}

Sen, P ^{[1
]}

机构：

[1] Shri GS Inst Technol & Sci, Dept Appl Phys, Indore 452003, Madhya Pradesh, India

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 105卷 / 12期

关键词：

ferroelectrics; phase transitions; optical properties; nonlinear optics;

D O I：

10.1016/S0038-1098(97)10225-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using the semiclassical density matrix approach, temperature dependent second-order susceptibility chi((2))(T) has been studied analytically in ferroelectric BaTiO3 crystal. The transitions between oxygen 2p and titanium 3d states have been accounted. The role of many-body effects is incorporated qualitatively by assuming the existence of local fields, which cause parity indefiniteness in the system. The second order susceptibility is found to decrease rapidly near the transition temperature. (C) 1998 Elsevier Science Ltd.

引用

页码：739 / 741

页数：3

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