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Abstract：
The microwave dielectric ceramics BaTi4+xO9+2x (x=0.0 similar to 0.50) were prepared by solid state reaction method. The influence of composition and sintering temperatures on phase constitution composition and dielectric properties were investigated. Relative densities of 97%-98% were achieved for the BaTi4+xO9+2x ceramics sintered at 1300 similar to 1350 degrees C. Single phase BaTi4O9 was observed for BaTi4+xO9+2. (x ＜= 0.28) ceramics. While Ba2Ti9O20 and TiO2 Were presented in BaT4+xO9+2x (x ＞= 0.33) ceramics besides BaTi4O9. Ba2Ti9O20 increased with sintering temperature increasing. Dielectric constant increased with the TiO2 content increasing. But opposite trends were observed for Qf values of BaT4+xO9+2x ceramics, which gradually decreased from about 40 000 GHz for x=0.0 to about 15 000 GHz for x=0.50.
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RARE METAL MATERIALS AND ENGINEERING
ISSN： 1002-185X
CN： 61-1154/TG
Year： 2007
Volume： 36
Page： 484-486
0 . 2 8 6
JCR@2007
0 . 6 0 0
JCR@2023
ESI Discipline： MATERIALS SCIENCE;
JCR Journal Grade：3
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WoS CC Cited Count： 0
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ESI Highly Cited Papers on the List： 0 Unfold All
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