Barium strontium titanate composite zinc aluminate ceramic material with high adjustable rate, low loss and practicality

The invention relates to a barium-strontium-titanate-based composite zinc aluminate ceramic ferroelectric dielectric material with high electricity, adjustability and the low loss. The barium-strontium-titanate-based composite zinc aluminate ceramic ferroelectric dielectric material with the high electricity, the adjustability and the low loss is characterized in that a component general formula is (1-x)Ba0.4Sr0.6TiOZnAl2O4, wherein the value range of x is that x is larger than or equal to 30wt% and smaller than or equal to 70wt%, BaTiO3 powder, SrTiO3 powder, ZnO powder and Al2O3 powderare selected as main raw materials, compounding is conducted according to the (1-x)Ba0.4Sr0.6TiOZnAl2O4, after ball-milling, drying and high-temperature presintering, mixed powder is prepared, the mixed powder is presintered at the temperature of 550-600 DEG C after tabletting, and then the barium-strontium-titanate-based composite zinc aluminate ceramic ferroelectric dielectric material is sintered at the temperatur