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Erschienen in:
01.06.2012
Microwave dielectric properties of BaNb(2−x)TaxP2O11 (x = 0, 0.5, 1, 1.5 and 2) ceramics
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 6/2012
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Abstract
BaNb(2−x)TaxP2O11 (x = 0, 0.5, 1, 1.5 and 2) ceramics were prepared by the conventional solid state ceramic route. The relative permittivity (εr) of the ceramics decreased from 25.3 for x = 0 to 12.9 for x = 2. BaTa2P2O11 (x = 2) sintered at 1250°C showed good microwave dielectric properties with Qu × f = 28,900 GHz and τf = − 29 ppm/°C. The addition of 5 wt% TiO2 lowered the sintering temperature to 1225°C and improved τf to −6 ppm/°C with εr = 13.4 and Qu × f = 17,200 GHz.