Numerical simulations of two dimensional magnetic domain patterns

Abstract

I show that a model for the interaction of magnetic domains that includes a short range ferromagnetic and a long range dipolar anti-ferromagnetic interaction reproduces very well many characteristic features of two-dimensional magnetic domain patterns. In particular bubble and stripe phases are obtained, along with polygonal and labyrinthine morphologies. In addition, two puzzling phenomena, namely the so called `memory effect' and the `topological melting' observed experimentally are also qualitatively described. Very similar phenomenology is found in the case in which the model is changed to be represented by the Swift-Hohenberg equation driven by an external orienting field.

8 pages, 8 figures. Version to appear in Phys. Rev. E

References in corpus (4)

• Theory of domain patterns in systems with long-range interactions of Coulomb type
• Quasistatic x-ray speckle metrology of microscopic magnetic return point memory
• Defect Structures in the Growth Kinetics of the Swift-Hohenberg Model
• Defect formation in the Swift-Hohenberg equation

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