Dielectric properties of (1-x)CaTiO3-xLa(Zn1/2Ti1/2)O-3 ceramics at microwave frequencies

Abstract

The microwave dielectric properties and sintering conditions of the (1-x)CaTiO3-xLa(Zn1/2Ti1/2)O-3 system were investigated for the development of a microwave dielectric material having a high Q . f(o), moderate epsilon(r) and zero tau(f). A microwave dielectric material having epsilon(r) of 50, Q . f(o) of 38000, and tau(f) of zero was obtained from the compound 0.5CaTiO(3)-0.5La(Zn1/2Ti1/2)O-3. The sintering temperature of compounds decreased with increasing amount of La(Zn1/2Ti1/2)O-3 and a cooling rate of less than 3 degrees C/min was optimum for obtaining the best Q . f(o) for all compositions tested.