Novel Low‐Firing Microwave Dielectric Ceramic <scp> <scp>LiCa</scp> </scp> ₃ <scp> <scp>MgV</scp> </scp> ₃ <scp> <scp>O</scp> </scp> ₁₂ with Low Dielectric Loss

Abstract

Novel low temperature firing microwave dielectric ceramic LiCa 3 MgV 3 O 12 ( LCMV ) with garnet structure was fabricated by the conventional solid‐state reaction method. The phase purity, microstructure, and microwave dielectric properties were investigated. The densification temperature for the LCMV ceramic is 900°C. LCMV ceramic possessed ε r = 10.5, Q u × f = 74 700 GHz, and τ f = −61 ppm/°C. Furthermore, 0.90 LiCa 3 MgV 3 O 12 –0.10 CaTiO 3 ceramic sintered at 925°C for 4 h exhibited good properties of ε r = 12.4, Q u × f = 57 600 GHz, and τ f = 2.7 ppm/°C. The LCMV ceramic could be compatible with Ag electrode, which makes it a promising ceramic for LTCC technology application.