Study on Defect Complexes in High-k Sr and Zr Co-doped BaTiO3 Ceramics

被引：0
|
作者：
Lu, Da-Yong [1 ]
Sun, Xiu-Yun [1 ]
机构：
[1] Jilin Inst Chem Technol, Res Ctr Mat Sci & Engn, Jilin 132022, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS III, PTS 1-3 | 2013年 / 750-752卷
关键词：
Perovskites; Dielectric properties; Defect complexes; X-ray diffraction; Raman spectroscopy; BARIUM-TITANATE CERAMICS; DIELECTRIC-PROPERTIES; PHASE-TRANSITION;
D O I：
10.4028/www.scientific.net/AMR.750-752.501
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：
In order to investigate the evidence for the formation of Sr2+-Zr4+ defect complexes in high-k Sr and Zr co-doped BaTiO3 ceramics, BaTiO3, (Ba0.85Sr0.15)TiO3, Ba(Ti0.8Zr0.2)O-3, and (Ba0.85Sr0.15)(Ti0.8Zr0.2)O-3 (BS15TZ20) ceramics were prepared using a mixed oxide method. The Y5V-type BS15TZ20 shows a high-k diffuse phase transition behavior (epsilon'(m) = 8000) and its Curie peak occurs near room temperature. The evolution in crystal structure and in dielectric property for the four samples gives four evidences for the formation of Sr2+-Zr4+ defect complexes in BS15TZ20. The splitting of the 720 cm(-1) Raman band does not relate to Sr2+-Zr4+ defect complexes, but to a multiphonon (A(1) (TO2) + A(1) (TO3)).
引用
收藏
页码：501 / 505
页数：5
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