Microwave Dielectric Properties of Solid Solutions in the System ZrTiO₄-HfTiO₄

Abstract

Microwave dielectric properties of solid solutions in the system ZrTiO₄-HfTiO₄ were measured for quenched and slow-cooled specimens. The relative permittivity of the quenched specimen decreased with increasing Hf content; however, that of the slowly cooled specimen had a peak permittivity value for the composition containing 75mol% of ZrTiO₄. These results were almost identical with those reported at 1kHz. A specimen with a zero temperature coefficient of resonant frequency was obtainable by optimizing the composition and heat treatment.