Third Order Perturbed Energy of Cobalt Ferrite Thick Films

TL;DR

This study investigates the magnetic properties and energy states of cobalt ferrite thick films, revealing how easy and hard magnetic directions depend on applied magnetic fields and film thickness.

Contribution

It provides a theoretical analysis of the third order perturbed energy in cobalt ferrite films, highlighting the dependence of magnetic directions on field orientation and film thickness.

Findings

Multiple easy and hard magnetic directions exist at specific magnetic field values.

Magnetic energy varies with in-plane and out-of-plane magnetic fields.

Theoretical calculations cover films up to 10,000 unit cells in thickness.

Abstract

Magnetic properties and easy axis orientation of cobalt ferrite films with applied magnetic field and number of layers were studied. According to our theoretical studies explained in this manuscript, the magnetically easy and hard directions of cobalt ferrite films solely depend on in plane and out of plane magnetic fields. According to 3-D and 2-D plots, there are many easy and hard directions at one particular value of in plane or out of plane magnetic field. The magnetic properties were investigated for cobalt ferrite films with thickness up to 10,000 unit cells. The total magnetic energy was calculated for a unit spin of cobalt.