Lattice vibration and microwave dielectric properties of (Ba_1-xCa_x)(Mg_1/3Ta_2/3)O₃

Abstract

Microwave dielectric properties in (Ba_1-xCa_x)(Mg_1/3Ta_2/3)O₃system were investigated. Permittivity increased and Qf value decreased with Ca substitution. However, compared with A site substitution and B site one in this system, the effect of the former on Qf value was significant small. Also the results of the lattice vibrations analysis followed this effect. The present study showed the importance of substitution site for the improvement of the dielectric properties.