Structure and electrical properties of bismuth and sodium modified SrBi2Nb2O9 ferroelectric ceramics

被引：46

作者：

Fang, Pinyang ^{[1
]}

Fan, Huiqing ^{[2
]}

Xi, Zengzhe ^{[1
]}

Chen, Weixing ^{[1
]}

Chen, Shanchuan ^{[1
]}

Long, Wei ^{[1
]}

Li, Xiaojuan ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710032, Peoples R China

[2] NW Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 550卷

关键词：

Ceramics; SrBi2Nb2O9; Sintering; Piezoelectricity; DIELECTRIC-PROPERTIES; PIEZOELECTRIC CERAMICS; MICROSTRUCTURE; TITANATE;

D O I：

10.1016/j.jallcom.2012.10.147

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sr1-x(Bi, Na)(x/2)Bi2Nb2O9 (SBNBNO, x = 0, 0.2, 0.4 and 0.6) ceramics were prepared by the conventional solid-state route. X-ray diffraction analyses (XRD) and Raman spectroscopy indicated that all specimens have a single phase with perovskite-type orthorhombic structure. The piezoelectric activity and Curie temperature of SrBi2Nb2O9 (SBN) ferroelectric ceramics are significantly improved by bismuth and sodium modification. The piezoelectric coefficient d(33) of the Sr-0.6(Bi, Na)(0.2)Nb2O9 (SBNBN4) specimen was found to be 22 pC/N, which is higher than the d(33) values (about 12 pC/N) of SBN specimen. Moreover, the SBNBN4 specimen exhibited the excellent temperature stability of piezoelectric properties. In order to confirm the nature of the piezoelectric properties enhanced, the relationship between the structure and electrical properties was discussed. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：335 / 338

页数：4

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