Title :
2D and 3D calculations of micromagnetic wall structures using finite elements
Author :
Bagnérés-Viallix, A. ; Baras, P. ; Albertini, J.B.
Author_Institution :
Boston Univ., MA, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
To compute wall structures in a uniaxial magnetic garnet, static micromagnetic equations are solved using the finite-element method. After setting up the physical and the mathematical context, the discretized equations are presented and discretized by standard first-order brick finite elements. A descent method, solving the nonlinear problem, is discussed, and some simulation results are given. This method is found to be time-consuming in 3-D, and a general framework for an adapted mesh algorithm that will speed up the computations is proposed.
Keywords :
finite element analysis; garnets; magnetic anisotropy; magnetic domain walls; 2D calculations; 3D calculations; adapted mesh algorithm; computations; descent method; discretized equations; finite-element method; magnetisation; micromagnetic wall structures; standard first-order brick finite elements; uniaxial magnetic garnet; Anisotropic magnetoresistance; Computational modeling; Demagnetization; Finite element methods; Garnets; High definition video; Magnetic materials; Magnetization; Micromagnetics; Nonlinear equations;
Journal_Title :
Magnetics, IEEE Transactions on