Microwave dielectric properties of BaNb(2?x)TaxP2O11 (x?=?0, 0.5, 1, 1.5 and 2) ceramics |
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| Authors: | Dhanesh Thomas K T Rethika and M T Sebastian |
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| Affiliation: | (1) Materials and Minerals Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, 695019, India; |
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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. |
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