[3] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan
[4] Kaohsiung Med Univ, Fac Fragrance & Cosmet, Kaohsiung 80708, Taiwan
来源:
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
|
2008年
/
39A卷
/
13期
关键词:
D O I:
10.1007/s11661-008-9622-2
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Ba(Zr (x) Ti1- x )O-3 (x = 0, 0.05, 0.1, and 0.15, BZT for short) has been prepared using the solid solution reaction from BaTiO3 (BT) and BaZrO3 (BZ). For transmission electron microscopy (TEM) analysis, the cubic phase of BZT coexists with the tetragonal one in the Ba(Zr0.15Ti0.85)O-3 ceramics. Its structure of ceramics has been estimated using the Rietveld and Cohen methods. The effect of BaZrO3 content on the tetragonality of BZT and its relation to a dielectric constant have been studied, and it is found that the tetragonality approaches 1 as the BZ content is increased, while simultaneously the Curie temperature of BZT decreases at a rate of 4.66 C per mole pct BZ. The average grain size was sensitive to the BZ content, and the P (r) could be enhanced at room temperature.