Microwave dielectric properties of low firing scheelite-related (Na_(0.5)La_(0.5))MoO_4 ceramic

摘要

In this paper, the (Na_(0.5)La_(0.5)MoO_4 ceramic with a scheelite structure was prepared via a solid state reaction method and its microwave dielectric properties were reported for the first time. The (Na_(0.5)La_(0.5)) MoO_4 ceramic sintered at 740 ℃ for 2 h possessed a low dielectric permittivity of 11.0, a quality factor (Qf value) of 25,050 GHz and a temperature coefficient of -59 ppm/℃ at 8.83 GHz. The (Na_(0.5)La_(0.5))MoO_4 ceramic is chemically compatible with Ag electrode material at its sintering temperature. It can be a promising microwave dielectric material for low-temperature co-fired ceramics technology (LTCC).