Title :
Multiscale Finite Element Solution of the Exchange Term in Micromagnetic Analysis of Large Bodies
Author :
Bottauscio, Oriano ; Chiampi, Mario ; Manzin, Alessandra
Author_Institution :
Ist. Naz. di Ricerca Metrologica, Torino, Italy
Abstract :
This paper presents a finite element formulation of the Landau-Lifschitz equation, where the exchange field is decomposed in a coarse-scale and a fine-scale term, following a multiscale approach. The proposed method is validated by comparison with a standard finite element solution considering some typical magnetization distributions in a thin film. Finally, a magnetization process in the same thin film is simulated and the results are found to be in satisfactory agreement with the standard finite element predictions.
Keywords :
Permalloy; exchange interactions (electron); ferromagnetic materials; finite element analysis; magnetic thin films; magnetisation; micromagnetics; FeNi; Landau-Lifschitz equation; exchange field; magnetization distributions; micromagnetic analysis; multiscale finite element solution; permalloy thin film; Equations; Finite difference methods; Finite element methods; Magnetic domain walls; Magnetic domains; Magnetostatics; Micromagnetics; Saturation magnetization; Shape; Transistors; Finite element methods; micromagnetic simulations; multiscale problems;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2031082
