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BaO‐TiO 2 ‐WO 3 Microwave Ceramics and Crystalline BaWO 4
Author(s) -
Nishigaki Susumu,
Yano Shinsuke,
Kato Hiroshi,
Hirai Takami,
omura Toshio
Publication year - 1988
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.1151-2916.1988.tb05769.x
Subject(s) - ceramic , materials science , mineralogy , microwave , analytical chemistry (journal) , metallurgy , chemistry , physics , chromatography , quantum mechanics
Microwave ceramic resonators composed of BaO‐TiO 2 ‐WO 3 were developed. The effect of WO 3 addition on the system of BaO·xTiO 2 ·(1+x)yWO 3 (x=4 and 4.5, y=0 to 0.04) was studied. The ceramics of this system are composed of crystallines including Ba 2 Ti 9 O 20 , BaTi 4 O 9 , BaWO 4 , and TiO 2 . At y=0.02, the BaO·4TiO 2 ·0.1WO 3 ceramic was found to have excellent microwave properties such as ε=35, Q=8400 at 6 GHz, and nearly 0 ppm/°C of τ f .