A new approach to (quasi) periodic boundary conditions in micromagnetics: The macrogeometry

作者:Fangohr Hans*; Bordignon Giuliano; Franchin Matteo; Knittel Andreas; de Groot Peter A J; Fischbacher Thomas
来源:Journal of Applied Physics, 2009, 105(7): 07D529.
DOI:10.1063/1.3068637

摘要

We present a new method to simulate repetitive ferromagnetic structures. This macrogeometry approach combines treatment of short-range interactions (i.e., the exchange field) as for periodic boundary conditions with a specification of the arrangement of copies of the primary simulation cell in order to correctly include effects of the demagnetizing field. This method (i) solves a consistency problem that prevents the naive application of three-dimensional periodic boundary conditions in micromagnetism and (ii) is well suited for the efficient simulation of repetitive systems of any size.

  • 出版日期2009-4-1