Separation of piezoelectric grain resonance and domain wall dispersion in Pb(Zr,Ti)O3 ceramics

被引：52

作者：

Porokhonskyy, V. ^{[1
]}

Jin, Li ^{[1
]}

Damjanovic, D. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Ceram Lab, CH-1015 Lausanne, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 21期

基金：

瑞士国家科学基金会;

关键词：

dielectric polarisation; dielectric resonance; electric domains; grain size; high-frequency effects; lead compounds; piezoceramics; zirconium compounds; FERROELECTRIC CERAMICS; DIELECTRIC-DISPERSION; BARIUM-TITANATE; SIZE;

D O I：

10.1063/1.3147166

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the experimental investigation of a high-frequency (1 MHz-1.8 GHz) dielectric dispersion in unpoled and poled Pb(Zr,Ti)O-3 ceramics. Two overlapping loss peaks could be revealed in the dielectric spectrum. The linear dependence between the lower-frequency peak position and average grain size D, which holds for D/<= 10 mu m, indicates that the corresponding polarization mechanism originates from piezoelectric resonances of grains. The intensity of the higher-frequency peak is drastically reduced by poling. It is thus proposed that this loss peak is related to domain wall contribution to the dielectric dispersion.

引用

页数：3

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