Microwave dielectric properties of Li2Mg2Ga2Ti3O12 ceramics with spinel-type

Novel spinel-type Li2Mg2Ga2Ti3O12 ceramics were prepared by the solid-state method. Rietveld refinement revealed that the Li2Mg2Ga2Ti3O12 ceramics possess a cubic spinel structure with the Fd3m(227) space group. Raman spectrum analysis indicated that the Q x f and FWHM of ceramics exhibit an inverse relationship. According to the P-V-L theory, the Ti-O bond has the highest percentage of contribution to both of bond ionicity and lattice energy, indicating a significant impact on r pound and Q x f, respectively. The Li2Mg2Ga2Ti3O12 ceramics showed the best microwave dielectric properties (r pound = 15.72, Q x f = 69,633 GHz, and of = -20 ppm/degrees C), sintering at an optimum temperature of 1200 degrees C. Additionally, a dielectric resonance antenna, on the basis of Li2Mg2Ga2Ti3O12 ceramics was designed and simulated.