Microwave properties of the systems Ba1−xSrx(Zn1/3Ta2/3)0.94T{i}0.06 O3 and Ba(Zn1/3Nb2/3)1−xZrxO3

By means of a solid-phase synthesis two types of microwave dielectric materials are obtained as follows: Ba1−xSrx(Zn1/3Ta2/3)0.94Ti0.06O3, where x = 0.20, 0.25, 0.30, 0.35 and 0.40 at sintering temperature TS = 1350, 1400 and 1450 ∘C; Ba(Zn1/3Nb2/3)1−xZrxO3, where x = 0.04, 0.06, 0.08 and 0.10 at TS = 1300, 1350, and 1400 ∘C. The microwave characteristics of the materials are investigated at f = 10 GHz. The composition Ba(Zn1/3Nb2/3)1−xZrxO3 demonstrates εr = 38, Q = 6100 and τf = +15 ppm ∘C−1 and the composition Ba0.80Sr0.20- (Zn1/3Ta2/3)0.94Ti0.06O3 has εr = 42, Q = 8200 and τf = −13 ppm ∘C−1. The composition Ba0.75Sr0.25(Zn1/3Ta2/3)0.94Ti0.06O3 has εr = 40, Q = 6500 and low τf = −13 ∘C−1 ppm. This composition could be used successfully for realisation of dielectric microwave resonators for the satellite television.