Phenomenological theory of size effects in ultrafine ferroelectric particles of lead titanate

被引：96

作者：

Jiang, B ^{[1
]}

Bursill, LA ^{[1
]}

机构：

[1] Univ Melbourne, Sch Phys, Parkville, Vic 3052, Australia

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.60.9978

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new phenomenological model is proposed and discussed to study size effects on the First-order ferroelectric phase transition of lead titanate ferroelectric particles. This model, by taking size effects on the phenomenological Landau-Ginzburg-Devonshire coefficients into consideration, can successfully explain the observed size effects on the Curie temperature, cia ratio, and thermal and dielectric properties of lead-titanate-type ferroelectric particles. Theoretical and experimental results for PbTiO3 fine particles are compared and discussed. The relationship between the current model and the model of Zhong et al. [Phys. Rev. B 50, 698 (1994)] is also discussed. [S0163-1829(99)10537-4].

引用

页码：9978 / 9982

页数：5

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