Implementation of Two-Dimensional Polycrystalline Grains in Object Oriented Micromagnetic Framework

J W Lau; R D McMichael; M J Donahue

doi:10.6028/jres.114.005

Implementation of Two-Dimensional Polycrystalline Grains in Object Oriented Micromagnetic Framework

J Res Natl Inst Stand Technol. 2009 Feb 1;114(1):57-67. doi: 10.6028/jres.114.005. Print 2009 Jan-Feb.

Authors

J W Lau¹, R D McMichael², M J Donahue³

Affiliations

¹ Metallurgy Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
² Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899.
³ Mathematical and Computational Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.

Abstract

In response to the growing need for a more accurate micromagnetic model to understand switching phenomenon in nanoscale magnets, we developed the capability to simulate two-dimensional polycrystalline grains using the Object Oriented Micromagnetic Framework (OOMMF). This addition allows users full flexibility in determining the magnetocrystalline anisotropy and axe in each grain as well as the inter- and intragranular exchange coupling strength.

Keywords: exchange coupling; magnetocrystalline anisotropy; micromagnetics; polycrystal.