Dielectric properties of NiZn ferrites prepared by the citrate precursor method

Dielectric properties such as dielectric constant, epsilon', and dielectric loss factor, tan delta(epsilon), ale repol ted for different compositions of NiZn ferrites prepared by the citrate precursor method and sintered in t he temperature range 1100-1400 degrees C. It is observed that epsilon' and tan delta(epsilon) for samples prepared in the present work are much lower than these normally obtained fur NiZn ferrites prepared by the conventional ceramic method. The low values are attributed to better compositional stoi chiometry, single-phase spinel structure and uniform microstructure of the samples. The low dielectric loss makes these samples especially attractive for use at high frequencies. (C) 1999 Elsevier Science S.A. All rights rese rved.