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Microwave Dielectric Properties for Ba(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub>–A(Mg<sub>1/2</sub>W<sub>1/2</sub>)O<sub>3</sub> (A=Ba, Sr, and Ca) Ceramics
43
Citations
10
References
1994
Year
Materials ScienceCrystal StructureHigh Temperature MaterialsZero TcfEngineeringCeramicsCeramic TechnologyApplied PhysicsCeramics MaterialsFerroelectric MaterialsMicrowave CeramicComplex Perovskite-structured BaStructural CeramicMicrowave Dielectric PropertiesCeramic PowdersElectrical PropertiesMicrostructure
For a high- Q dielectric resonator at microwave frequencies, complex perovskite-structured Ba(Mg 1/3 Ta 2/3 )O 3 –A(Mg 1/2 W 1/2 )O 3 (A=Ba, Sr, and Ca) ceramics have been developed. A(Mg 1/2 W 1/2 )O 3 effects on the crystal structure, microstructure, and microwave characteristic of Ba(Mg 1/3 Ta 2/3 )O 3 (BMT) were investigated. Ba(Mg 1/2 W 1/2 )O 3 (BMW) decreased the temperature coefficient of resonant frequency ( TCF ) for BMT. Sr(Mg 1/2 W 1/2 )O 3 (SMW) and Ca(Mg 1/2 W 1/2 )O 3 (CMW) increased it. Zero TCF was obtained for the BMT/BMW=95/5 composition. With 0.5 mol% BMW content, dielectric loss quality, Q d , reached a maximum (40000 at 10 GHz).
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