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Periodic Boundary Conditions for Demagnetization Interactions in Micromagnetic Simulations

Published

Author(s)

Michael J. Donahue, Kristof M. Lebecki, M.W. Gutowski

Abstract

A new method for the introduction of periodic boundary conditions to the selfmagnetostatic (demagnetization) term in micromagnetic simulations is described, using an Ewaldlike summation method in real space. The long-range character of the dipolar interactions is included without any distance cutoffs. The accumulated errors are carefully monitored to provide easy control of the quality of the results. This allows the calculations to be either accurate up to floating point limitations, or less precise when computational speed requirements dominate. This method is incorporated into a full micromagnetic program, and comparisons are made to analytic results.
Citation
Journal of Physics-Condensed Matter
Volume
41
Issue
Art. No. 175005

Keywords

finite difference methods, micromagnetics, numerical simulation, periodic boundary conditions

Citation

Donahue, M. , Lebecki, K. and Gutowski, M. (2008), Periodic Boundary Conditions for Demagnetization Interactions in Micromagnetic Simulations, Journal of Physics-Condensed Matter, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=152134 (Accessed June 22, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created September 7, 2008, Updated February 17, 2017