Measurement and analysis of microwave dielectric properties of BaTiO3-Based ceramics

被引：1
|
作者：
Li, Jianyong [1 ]
Kakemoto, Hirofumi [1 ]
Wada, Satoshi [1 ]
Tsurumi, Takaaki [1 ]
机构：
[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan
来源：
FERROELECTRICS | 2007年 / 356卷
关键词：
relaxors; diffuse phase transition; measuring technique; ferroelectrics barium titanate;
D O I：
10.1080/00150190701511674
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new measurement technique using micro planar electrode and electromagnetic field analysis was developed to measure the microwave dielectric properties of materials with high dielectric constant and high loss factor. Dielectric dispersions of (Ba0.6Sr0.4)TiO3 and Ba(Zr0.25Ti0.75)O-3 were measured up to 3 GHz as a function of temperature, and were well explained by the stretched exponential model of the decay function in dielectric relaxation. The phase transition in these ceramics was investigated by dielectric relaxation analysis, X-ray diffraction analysis and specific heat measurement. (Ba0.6Sr0.4)TiO3 showed a diffused phase transition and its relaxation frequency was much high than Ba(Zr0.25Ti0.75)O-3, while Ba(Zr0.25Ti0.75)O-3 showed typical relaxors behavior.
引用
收藏
页码：426 / 431
页数：6
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