High-quality factor of (1 − x) Li2Mg3TiO6-xBaV2O6 (x = 0.1, 0.3, 0.4, 0.5, 0.6) ceramics with low sintering temperature

Abstract

Excellent microwave ceramics play a dominant role in current 5G communication technology and Internet of things technology. In current work, high-quality factor of Li2Mg3TiO6-xBaV2O6 (LMT-xBV2, x = 0.1, 0.3, 0.4, 0.5, 0.6) ceramics were synthesized via the traditional solid-state reaction method. Phase composition, microstructure, microwave dielectric properties and co-firing compatibility with silver were investigated systematically. The sintering temperature of LMT ceramics was successfully reduced from 1280 °C to below 950 °C with the addition of BV2 ceramics. In particular, when x value was 0.1, high-quality factor 90,100 GHz (at 10 GHz), a permittivity 14.3 and τf value − 65 ppm/°C were gained when sintered at 900 °C for 4 h. The linear approximation formula was used to qualitatively illustrate the relationship between microstructure and microwave dielectric properties. The good chemical compatibility of LMT-0.1BV2 with silver provides a good candidate for LTCC processing.