Effect of Cr on structural and magnetic properties of cobalt ferrite

Abstract

Magnetic systems with spinel structure have generated interest for its role in wide range of applications due to their large spin polarization and high magnetic critical temperatures, typically well above the room temperature. Ferrimagnetic and electrical properties of the spinel ferrites are strongly influenced by the distribution of cations along with Fe3+-Fe2+ between the tetrahedral and octahedral sites. Particularly, cobalt ferrite, inverse spinel at bulk and partial inversion in nano order. The inter play of cations in site occupation tune the electric and magnetic properties of the cobalt ferrite. In the present study we tried to tune the magnetic properties of the cobalt ferrite by substituting the Cr3+ in place of Fe.