Structure and electrical properties of SrBi2Nb2O9-based ferroelectric ceramics with lithium and cerium modification

被引：21
作者：
Fang, Pinyang [1 ]
Xi, Zengzhe [1 ]
Long, Wei [1 ]
Li, Xiaojuan [1 ]
Li, Jin [2 ]
机构：
[1] Xian Technol Univ, Sch Mat & Chem Engn, Shaanxi Key Lab Photoelect Funct Mat & Devices, Xian 710032, Peoples R China
[2] Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 575卷
关键词：
Ceramics; SrBi2Nb2O9; Sintering; Piezoelectricity; DIELECTRIC-PROPERTIES; AURIVILLIUS-TYPE; BISMUTH; SUBSTITUTION; LANTHANUM; CA; SR;
D O I：
10.1016/j.jallcom.2013.04.073
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：
Aurivillius-type ceramics, Sr-0.6(BiNa)(0.2)Bi2Nb2O9(SBNBN) with lithium and cerium modification, were synthesized by using conventional solid-state processing. X-ray diffraction analyses (XRD) and Raman spectroscopy revealed that the lithium and cerium modified SBNBN ceramics had a single phase with perovskite-type orthorhombic structure. The effect of lithium and cerium substitution for A site on structure and electric properties of the SBNBN-based ceramics was investigated. Piezoelectric properties of the SBNBN ceramics were significantly improved by the modification of lithium and cerium. Curie temperature T-c and piezoelectric coefficient d(33) of the Sr-0.5(BiNa)(0.2)(LiCe)(0.05)Bi2Nb2O9 ceramics were 583 degrees C and 28 pC/N, respectively. Reasons for enhancement in piezoelectric properties of the SBNBN ceramics were discussed. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：61 / 64
页数：4
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