Premium
Microwave Loss Quality of BaZn 13 Ta 2/3 O 3 Ceramics
Author(s) -
DESU S. B.,
O'BRYAN H. M.
Publication year - 1985
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1985.tb11521.x
Subject(s) - tantalate , barium , materials science , ceramic , distortion (music) , microwave , crystallography , mineralogy , analytical chemistry (journal) , ferroelectricity , chemistry , metallurgy , optoelectronics , dielectric , physics , amplifier , cmos , chromatography , quantum mechanics
Loss of ZnO explains the improved microwave loss quality (Q) for Ba(Zn 1/3 Ta 2/3 )O 3 ceramics which have been sintered at high temperatures or longer times. Ordering of Zn and Ta is complete in 60 h at 1400°C, but crystallographic distortion and Q continue to increase up to 120 h. As ZnO volatilizes from the sample, Ba replaces Zn on the B sites and permits additional crystallographic distortion; meanwhile, barium tantalate phases also appear. Crystallographic compositional data are presented to confirm this interpretation.