Structure and ferroelectric property of Nb-doped SrBi4Ti4O15 ceramics

被引：37
作者：
Hao, Hua [1 ]
Liu, Hanxing [1 ]
Ouyang, Shixi [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Sch Mat Sci & Engn, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China
来源：
JOURNAL OF ELECTROCERAMICS | 2009年 / 22卷 / 04期
关键词：
Bismuth layer structure ferroelectrics (BLSF); Dope; Ferroelectric properties;
D O I：
10.1007/s10832-007-9180-9
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nb-doped SrBi4Ti4O15 (SBT) was produced by conventional method. Structural and ferroelectric properties of SBT were examined as a function of niobium composition. Analyzing the structure futures of SBT by XRD, XPS and Raman spectrum, Nb5+ substituted Ti4+ to form NbO6 octahedron and did not change the structure of SBT. The XRD patterns indicated the formation of the single phase of SBT for x = 0.01and 0.03 and secondary phase of Sr3Ti2O7 appeared when x > 0.1. To compare the effect of Nb doping, the ferroelectric properties (hysteresis loop, piezoelectric coefficient) of Nb-doped SBT were measured. The SBT doped with x = 0.15 was found to exhibit higher remanent polarization with d (33) = 17 pC/N.
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收藏
页码：357 / 362
页数：6
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