Microwave dielectric properties and chemical compatibility with alumina electrode of two novel ultra-low temperature firing ATeMoO6 (A = Mg, Zn) ceramics

Abstract

Two novel ATeMoO6 (A = Mg, Zn) ceramics with ultra-low sintering temperature were fabricated through traditional solid-state reaction. Both ceramics have an orthorhombic structure in space group P21212, which was indicated by X-ray diffraction. The crystal structure, sintering characteristics, microstructure and microwave dielectric properties were discussed. MgTeMoO6 ceramic sintered at the ultra-low temperature of 660 °C for 6 h achieved excellent microwave dielectric properties with εr = 11.93, Q × f = 34,453 GHz and τf = – 82 ppm/°C, whereas ZnTeMoO6 had the corresponding performances of εr = 12.39, Q × f = 29,153 GHz and τf = – 87 ppm/°C at 650 °C for 6 h. The good chemical stability with Al indicates that ATeMoO6 (A = Mg, Zn) ceramics may be potential candidates for ultra-low temperature co-fired ceramic technology (ULTCC) applications.