SYNTHESIS AND DIELECTRIC-PROPERTIES OF SOLUTION SOL-GEL-DERIVED 0.9PB(MG1/3NB2/3)O3-0.1PBTIO3 CERAMICS

被引：62

作者：

RAVINDRANATHAN, P

KOMARNENI, S

BHALLA, AS

ROY, R

机构：

[1] Materials Research Laboratory, Pennsylvania State University, University Park, Pennsylvania

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 12期

关键词：

SOL-GEL; LEAD MAGNESIUM NIOBATES; DIELECTRIC MATERIALS; SYNTHESIS; SINTER;

D O I：

10.1111/j.1151-2916.1991.tb04292.x

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：

A solution sol-gel method has been developed to prepare 0.9Pb(Mg1/3Nb2/3)O3-0.1 PbTiO3 (0.9PMN-0.1PT) ceramics. During the processing the gel first converted to cubic pyrochlore phase at a calcination temperature of 600-degrees-C followed by the formation of pure perovskite phase at 775-degrees-C. The ceramics sintered at 1250-degrees-C for 4 h showed almost-equal-to 98% of the theoretical density. The room-temperature dielectric constant of the pellets sintered at 1250-degrees-C showed a maximum value of 25 035 at 1 kHz. Sintering studies at different temperatures revealed that the dielectric constant increased with increasing grain size in these ceramics.

引用

页码：2996 / 2999

页数：4

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