High curie temperature perovskite BiInO3-PbTiO3 ceramics

被引:71
作者
Duan, RR [1 ]
Speyer, RF
Alberta, E
Shrout, TR
机构
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
[2] TRS Technol, State Coll, PA 16801 USA
[3] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA
关键词
D O I
10.1557/JMR.2004.0282
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The extent of BiInO3 substitution in the perovskite system xBiInO(3)-(1 - x)PbTiO3 and the corresponding raise in the Curie temperature were investigated using thermal analysis, dielectric measurements, x-ray diffraction, and electron microscopy. Maximum tetragonal perovskite distortion (c/a = 1.082) was obtained for x = 0.20, with a corresponding Curie temperature of 582 degreesC. Phase-pure tetragonal perovskite was obtained for x less than or equal to 0.25. Compound formation after calcining mixed oxide powders resulted in agglomerated cube-shaped tetragonal perovskite particles, which could be fired to 94.7% of theoretical density (TD). Sol-gel fabrication resulted in nano-sized tetragonal or pseudo-cubic perovskite particles, which after two-step firing, resulted in a tetragonal perovskite microstructure at as high as (x = 0.20) 98.1% of TD.
引用
收藏
页码:2185 / 2193
页数:9
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