Influence of Compressive Stress on Dielectric and Ferroelectric Properties of the Na0.5K0.5NbO3, Na0.5K0.5(Nb0.94Sb0.06)O3 and Na0.5K0.5(Nb0.94Sb0.06)O3+0.5mol% MnO2 Ceramics

被引：1

作者：

Suchanicz, J. ^{[1
]}

Faszczowy, I. ^{[1
]}

Klimkowski, G. ^{[1
]}

Lewczuk, U. ^{[1
]}

Karpierz, M. ^{[1
]}

Sternberg, A. ^{[2
]}

机构：

[1] Pedag Univ, Inst Phys, PL-30084 Krakow, Poland

[2] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia

来源：

FERROELECTRICS | 2013年 / 455卷 / 01期

关键词：

NKN ceramics; compressive stress; dielectric and ferroelectric properties;

D O I：

10.1080/00150193.2013.845498

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Good quality lead-free ceramics of Na0.5K0.5NbO3, Na0.5K0.5(Nb0.94Sb0.06)O-3 and Na0.5K0.5(Nb0.94Sb0.06)O-3 +0.5mol%MnO2 have been produced by a solid phase hot pressing sintering process at 1120-1145 degrees C. The dependence of dielectric and ferroelectric properties on the uniaxial pressure (0-3000 bar) of the these samples was investigated, revealing a significant influence of the external stress on their properties. This includes a shift of the phase transition, a diffuseness of the permittivity characteristics, a change of the dielectric dispersion and a decrease of the polarization. We discuss our results based on hardening of the soft-mode and domain switching processes under applying of pressure.

引用

页码：136 / 141

页数：6

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