SYNTHESIS OF FERROELECTRIC PEROVSKITES THROUGH AQUEOUS-SOLUTION TECHNIQUES

被引:12
作者
GUZMAN, G [1 ]
AEGERTER, MA [1 ]
BARBOUX, P [1 ]
LIVAGE, J [1 ]
机构
[1] UNIV P & M CURIE,CNRS,F-75252 PARIS 05,FRANCE
关键词
D O I
10.1007/BF01352222
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The hydrolysis of niobates in aqueous solutions has been applied to the coprecipitation of PbNb2/3Mg1/303 leading to a low temperature synthesis of this ferroelectric relaxor ceramic. The effect of hydrolysis conditions - such as the concentration of bases and acids used, their rates of addition and the nature of the precursors salts - is described. The perovskite phase appears after heating at 350-degrees-C and is obtained as a pure phase at 800-degrees-C after heat treatment for 1 h. Relaxor ferroelectric ceramics with a high dielectric constant can be obtained by sintering at 1000-degrees-C. The process has been also applied to the synthesis of other relaxor ceramic compositions such as PZN (PbNb2/3Zn1/303) and PFN (PbNb1/2Fe1/203) compounds.
引用
收藏
页码:6510 / 6515
页数:6
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