Microwave dielectric properties of Ba(6-3x)Pr(8+2x)Ti18O54 ceramics

被引：0
|
作者：
Azough, F [1 ]
Freer, R
机构：
[1] Univ Manchester, Ctr Mat Sci, Manchester M1 7HS, Lancs, England
[2] UMIST, Manchester M1 7HS, Lancs, England
来源：
EURO CERAMICS VII, PT 1-3 | 2002年 / 206-2卷
关键词：
D O I：
10.4028/www.scientific.net/KEM.206-213.2217
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：
Ceramics in the solid solution of Ba(6-3x)Pr(8+2x)Ti18O54 have been prepared by the mixed oxide route. Single phase ceramics were obtained in the range of 0 <x <0.75. The microstructure of these ceramics are composed of needle-like grains in the range of 1-10 microns; the aspect ratio of the grains increased with the increasing x. Higher temperatures were required to obtain high density ceramics at compositions with higher x value. The microwave dielectric properties of the Ba(6-3x)Pr(8+2x)Ti18O54 strongly depends on the x value. The relationship between microstructures and dielectric properties are reported. Ceramics with x=0.5 were also prepared by a chemical route; the properties were k=91, Q=1600 at 4GHz and tau (f) of 160 ppm/degreesC.
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收藏
页码：2217 / 2220
页数：4
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