SOL-GEL PROCESSING AND MICROWAVE CHARACTERISTICS OF BA(MG1/3TA2/3)O3 DIELECTRICS

被引：74

作者：

RENOULT, O ^{[1
]}

BOILOT, JP ^{[1
]}

CHAPUT, F ^{[1
]}

PAPIERNIK, R ^{[1
]}

HUBERTPFLALZGRAF, LG ^{[1
]}

LEJEUNE, M ^{[1
]}

机构：

[1] UNIV NICE,CHIM MOLEC LAB,F-06034 NICE,FRANCE

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 12期

关键词：

D O I：

10.1111/j.1151-2916.1992.tb04430.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：

The sol-gel method has been developed for the preparation of pure Ba(Mg1/3Ta2/3)O3 ceramics. This involves the reaction of the heterometallic alkoxide Ta2Mg(OEt)12 with hydrated barium hydroxide Ba(OH)2-8H2O. Complete crystallization of the sol-gel-derived powder is achieved at 600-degrees-C, leading to a cubic perovskite type phase. After sintering at 1400-degrees-C (2-5 h), a trigonal cell arises from Mg-Ta ordering (the degree of order is greater than 0.9), and about 98.5% of the theoretical density is obtained. Preliminary microwave dielectric measurements show that the dielectric constant and the unloaded Q(u) of the ceramics are 24.2 and 6750, respectively, at 7.7 GHz.

引用

页码：3337 / 3340

页数：4

共 17 条

[1] DIELECTRIC-PROPERTIES OF SR(NI1/3NB2/3)O3-BA(NI1/3NB2/3)O3 CERAMICS AT MICROWAVE-FREQUENCIES [J].