Demagnetization factor dependence of energy of thick ferromagnetic films

TL;DR

This study uses a second order perturbed Heisenberg Hamiltonian to analyze how the energy of thick ferromagnetic films depends on the demagnetization factor, revealing orientation preferences and energy differences between sc and fcc structures.

Contribution

It provides a detailed analysis of the demagnetization factor's effect on energy and orientation in thick ferromagnetic films using a perturbative Hamiltonian approach.

Findings

Orientation angles depend on demagnetization factor.

Energy of sc(001) films is higher than fcc(001) films.

Fcc(001) films have smoother energy curves.

Abstract

Second order perturbed Heisenberg Hamiltonian was employed to study the variation of energy of ferromagnetic thick films with demagnetization factor. Under the influence of demagnetization factor given by =6.6, the sc(001) film with 10000 layers can be easily oriented in 0.6 radians direction for the values of energy parameters used in this report. Easy direction of thick fcc(001) film with 10000 layers was determined at 0.66 radians, when the demagnetization factor is given by =2.6. The energy of sc(001) thick film is larger than that of fcc(001) thick film. But the energy curve of fcc(001) thick film is smoother than that of sc(001).