Proposal for a micromagnetic standard problem: Domain wall pinning at phase boundaries

Autor(en)

Paul Heistracher, Claas Abert, Florian Bruckner, Thomas Schrefl, Dieter Suess

Abstrakt

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.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Universität für Weiterbildung Krems, Christian Doppler Forschungsgesellschaft (CDG)

Journal

Journal of Magnetism and Magnetic Materials

Band

548

Anzahl der Seiten

8

ISSN

0304-8853

DOI

https://doi.org/10.1016/j.jmmm.2021.168875

Publikationsdatum

12-2021

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie, 103043 Computational Physics

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/f9976bed-c805-460b-913b-d4225d4ad0d3