Microwave Dielectric Properties of Li2(M2+)2Mo3O12 and Li3(M3+)Mo3O12 (M=Zn, Ca, Al, and In) Lyonsite-Related-Type Ceramics with Ultra-Low Sintering Temperatures

摘要: In this work, the Li2(M2+)2Mo3O12 and Li3(M3+)Mo3O12 (M=Zn, Ca, Al, In) lyonsite-related structures were prepared using a solid-state reaction method. Single-phase lyonsite materials formed for following compositions Li2Zn2Mo3O12, Li3AlMo3O12, Li3InMo3O12 ceramics. Whereas, Li2Ca2Mo3O12 batched produced Li2MoO4 CaMoO4 phases. All four ceramics did not react with Ag Al powders at their optimal sintering temperatures, which will permit possibility of cofired electrodes these metallurgies. The Li2Zn2Mo3O12 ceramic can be sintered 630°C relative permittivity 11.1, Q×f value ∼70 000 GHz, temperature coefficient −90 ppm/°C 14.6 GHz. Li3AlMo3O12 570°C has 9.5, ∼50 000 −73 14.1 9.8, ∼36 000 15.0 These are good candidate expanding family ultra-low technologies, filter substrate applications high-frequency range.