Rock-salt structure Li2Mg3TiO6 microwave dielectric ceramics were prepared via aqueous sol–gel method. The influences of sintering temperatures on the crystalline phase, microstructure and microwave dielectric properties of Li2Mg3TiO6 ceramics were investigated in detail. Microwave dielectric properties were strongly dependent on crystalline phases and grain sizes, which were affected by the powder preparation and the sintering process. The samples with nearly full density were obtained at 1150 °C and had an excellent microwave property of ɛ r = 14.78, Q × f = 162,260 GHz, and τ f = − 21.62 ppm/°C, observably decreasing the sintering temperature without deteriorating the acceptable properties. The relatively lower sintering temperature and excellent microwave dielectric properties would make these ceramics promising for microwave components application in the future.
Journal of Materials Science: Materials in Electronics – Springer Journals
Published: Dec 26, 2017
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