Publications in Scientific Journals:
D. Praetorius, M. Ruggeri, B. Stiftner:
"Convergence of an implicit-explicit midpoint scheme for computational micromagnetics";
Computers and Mathematics with Applications,
75
(2018),
5;
1719
- 1738.
English abstract:
Based on lowest-order finite elements in space, we consider the numerical integration of the Landau-Lifschitz-Gilbert equation (LLG). The dynamics of LLG is driven by the so-called effective field which usually consists of the exchange field, the external field, and lower-order contributions such as the stray field. The latter equires the solution of an additional partial differential equation in full space. Following Bartels and Prohl (2006) [Convergence of an implicit finite element method for the Landau-Lifschitz-Gilbert equation. SIAM J. Numer. Anal. 44(4):1405-1419], we combine the midpoint rule with an explicit Adams-Bashforth scheme. The resulting integrator is formally of second-order in time, and we prove unconditional convergence towards a weak solution of LLG. Numerical experiments underpin the theoretical findings.
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.camwa.2017.11.028
Created from the Publication Database of the Vienna University of Technology.