Magnetic islands modelled by a phase-field-crystal approach

Niloufar Faghihi (), Simiso Mkhonta, Ken R. Elder and Martin Grant
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Niloufar Faghihi: Physics Department, Rutherford Building, 3600 rue University, McGill University
Simiso Mkhonta: University of Swaziland, Private Bag 4
Ken R. Elder: Oakland University
Martin Grant: Physics Department, Rutherford Building, 3600 rue University, McGill University

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 3, 1-7

Abstract: Abstract Using a minimal model based on the phase-field-crystal formalism, we study the coupling between the density and magnetization in ferromagnetic solids. Analytical calculations for the square phase in two dimensions are presented and the small deformation properties of the system are examined. Furthermore, numerical simulations are conducted to study the influence of an external magnetic field on various phase transitions, the anisotropic properties of the free energy functional, and the scaling behaviour of the growth of the magnetic domains in a crystalline solid. It is shown that the energy of the system can depend on the direction of the magnetic moments, with respect to the crystalline direction. Furthermore, the growth of the magnetic domains in a crystalline solid is studied and is shown that the growth of domains is in agreement with expected behaviour.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1140/epjb/e2018-80543-9

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