DIELECTRIC BEHAVIOR OF TETRAVALENT TITANIUM-SUBSTITUTED NI-ZN FERRITES

The dielectric constants and dielectric loss tangents of tetravalent titanium-substituted Ni-Zn ferrites Zn//0//. //2//5Ni//0//. //7//5// plus //t Ti//tFe//2// minus //2//tO//4 with various titanium concentrations were measured at room temperature in the frequency range 100 Hz-500 kHz. The variation of these parameters with composition and frequency is explained qualitatively. Peaks in the dielectric loss tangent versus frequency curves are observed in two of the ferrites. The possible mechanisms are discussed.