Temperature-stable dielectric and piezoelectric properties of (K0.5Na0.5) NbO3-Bi(Cu0.75W0.25)O3 solid solutions

被引：7

作者：

Chen, Xiuli ^{[1
]}

Liu, Gaofeng ^{[1
]}

Huang, Guisheng ^{[1
]}

Yan, Xiao ^{[1
]}

Li, Xiaoxia ^{[1
]}

Zhou, Huan Fu ^{[1
]}

机构：

[1] Guilin Univ Technol, Sch Mat Sci & Engn, Guangxi Ministry Prov Jointly Constructed Cultiva, State Key Lab Proc Nonferrous Met & Featured Mat, Guilin 541004, Peoples R China

来源：

MATERIALS LETTERS | 2017年 / 199卷

关键词：

Ceramics; Crystal structure; Dielectrics; KNN-BASED CERAMICS;

D O I：

10.1016/j.matlet.2017.04.065

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(1 - x)(K0.5Na0.5)NbO3-xBi(Cu0.75W0.25)O-3 (abbreviated as KNN-BCW) [x = 0, 0.005, 0.01, 0.015, 0.02, 0.025] lead-free ceramics were fabricated by a solid state reaction method. The XRD analysis confirmed that Bi(Cu0.75W0.25)O-3 has diffused into (K0.5Na0.5)NbO3 to fabricate a new solid solution with perovskite structure. As x = 0.01, the ceramics exhibited high relative permittivity (epsilon similar to 1121), low dielectric loss (tan delta < 2.8%). Especially, good thermal stability (Delta epsilon/epsilon(150 degrees C) <=+/- 15%) was obtained in a broad temperature range from 150 degrees C to 500 degrees C as x = 0.025. The results indicated that the addition of Bi(Cu0.75W0.25)O-3 could enhance the dielectric properties of ceramics. The thermal aging behavior represented that the d(33) was decreased gradually with increasing the measured temperatures. (C) 2017 Published by Elsevier B.V.

引用

页码：128 / 130

页数：3

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