Demagnetization Factor Dependence of Energy of Ultrathin Ferromagnetic Films with Four Layers

Abstract

The variation of energy with demagnetization factor will be investigated for sc(001) and bcc(001) ferromagnetic lattices with four layers using classical model of Heisenberg Hamiltonian. According to 3-D plots, the films with four layers can be easily oriented in certain directions under the influence of particular demagnetization factor and angles for both sc(001) and bcc(001) ferromagnetic lattice structures. A flat part can be seen in the middle of 3-D plots in addition to periodic variations. When the demagnetization factor is given by  = 6, sc(001) film with four layers can be easily oriented in 0.6 radians direction for the energy parameter values used in this simulation. Under the influence of demagnetization factor given by = 5.2, thin film of bcc(001) lattice with four layers can be easily oriented along 0.63 radians direction.

Keywords: Magnetic thin films, Heisenberg Hamiltonian, demagnetization factor