Annealing effect on relaxor behaviours of spark plasma sintered Pb(Sc1/2Nb1/2)O3 superfine ceramics

被引：5
|
作者：
Zhu, M. K. [1 ]
Tang, J. L. [1 ]
Ke, N. [2 ]
Qiu, Q. [3 ]
Lei, N. [1 ]
Hou, Y. D. [1 ]
Yan, H. [1 ]
Xu, J. B. [2 ]
机构：
[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
[2] Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
[3] Shenzhen Univ, Sch Chem & Chem Engn, Shenzhen 518060, Peoples R China
来源：
ADVANCES IN APPLIED CERAMICS | 2011年 / 110卷 / 02期
关键词：
Ferroelectric; Perovskite; Pb(Sc1/2Nb1/2)O-3; Annealing; Dielectric properties; FERROELECTRIC PEROVSKITES PB(SC1/2NB1/2)O3; BARIUM-TITANATE CERAMICS; PB(SC1/2TA1/2)O3; TRANSITION; FIELD;
D O I：
10.1179/1743676110Y.0000000002
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：
Relaxor ferroelectric Pb(Sc1/2Nb1/2)O-3 (PSN) superfine ceramics were fabricated by spark plasma sintering process and subjected to an annealing in oxygen ambience at a low temperature of 500 degrees C. The microstructure of the PSN ceramics was examined by X-ray diffraction and scanning and transmission electron microscopy, while the dielectric properties were measured in the range of 25-200 degrees C. The dielectric measurements revealed a reverse change in the frequency dispersion Delta T and diffusive factor lambda as annealing extended. Transmission electron microscopy observation and conductivity measurement revealed that the uncommon performance in relaxor properties could be attributed to the complex effects of oxygen vacancies and domain structures induced by the annealing.
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收藏
页码：74 / 79
页数：6
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