Papers › Proposal for a micromagnetic standard problem: domain wall pinning at phase boundaries
Proposal for a micromagnetic standard problem: domain wall pinning at phase boundaries
Paul Heistracher, Claas Abert, Florian Bruckner, Thomas Schrefl, Dieter Suess
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We propose a novel micromagnetic standard problem calculating the coercive field for unpinning a domain wall at the interface of a multiphase magnet. This problem is sensitive to discontinuities in material parameters for the exchange interaction, the uniaxial anisotropy, and the spontaneous magnetization. We derive an explicit treatment of jump conditions at material interfaces for the exchange interaction in the finite-difference discretization. The micromagnetic simulation results are compared with analytical solutions and show good agreement. The proposed standard problem is well-suited to test the implementation of both finite-difference and finite-element simulation codes.
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