Ferromagnetic properties of zinc ferrite prepared by MOD technique

Abstract

The ferromagnetic Zinc ferrite (ZnFe₂O₄: ZFO) were synthesized by the metal organic decomposition technique. The ferromagnetic ZFO is an attractive material for new magneto-optical devices because they show transparency in short wavelength region of the visible light. The possible cause of the ferromagnetism of ZFO is the inverse spinel structure. The saturation magnetization of ZFO film strongly depended on the annealing conditions. The annealing conditions showing the large magnetization lie between 420 and 600 °C and between 2 and 12 h, respectively. The Mössbauer and magnetization measurements indicate that the films show paramagnetic at room temperature and the estimated Curie temperature was approximately 190 K. The Faraday rotation at 80 K showed large values in the short wave length region of visible light.