Structural and magnetic properties of chromium-doped ferrite nanopowders

Abstract

This paper reports on a study of Cr 3+-doped nanosized Ni–Zn ferrites produced by combustion reaction, and evaluates their morphological and magnetic properties. The powders were characterized by X-ray diffraction (XRD) and SEM and magnetic properties. All the compositions showed the formation of the inverse spinel phase of Ni–Zn ferrite. The average crystallite size ranged from 21 to 26 nm. The saturation magnetization was found to be in the range of 53–43 emu/g. The increase in Cr 3+ concentration in the Ni–Zn ferrite caused a reduction in hysteresis losses and a slight reduction in the saturation magnetization.