Fabrication and characterization of potassium-sodium niobate piezoelectric ceramics by spark-plasma-sintering method

被引：128

作者：

Wang, RP ^{[1
]}

Xie, RJ ^{[1
]}

Sekiya, T ^{[1
]}

Shimojo, Y ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Smart Struct Res Ctr, Tsukuba, Ibaraki 3058564, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2004年 / 39卷 / 11期

关键词：

ceramics; electronic material; oxides; ferroelectricity; piezoelectricity;

D O I：

10.1016/j.materresbull.2004.05.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High density (Na1-xKx)NbO3 (x = 0.5, 0.6, and 0.7) ceramics were successfully prepared by spark-plasma-sintering (SPS) method. The dielectric and piezoelectric properties of the SPS samples were investigated and compared to that of hot-pressed samples. It is found that, the SPS-sintered (Na1-xKx)NbO3 samples show higher room temperature dielectric constant, higher coercive fields, lower remnant polarizations and lower electromechanical coefficients than that of the hot-pressed (Na1-xKx)NbO3 samples. The dielectric and piezoelectric property differences between the SPS-sintered and hot-pressed samples have been attributed to grain size effects. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1709 / 1715

页数：7

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