Ferromagnetic Materials for MEMS- and NEMS-Devices

A. Weddemann, J. Jadidian, S. Khushrushahi, Y. Kim, and M. Zahn
Research Laboratory of Electronics
Massachusetts Institute of Technology
Cambridge MA
Published in 2011

The modeling of ferromagnetic materials is a challenging task of high industrial and academic impact. Thin film and granular systems form the basis of novel spintronic devices such as modern hard drives with a high data area storage density. In order to push the current limits even further and to design more efficient devices, a strong understanding of the governing dynamics is required.

We implement the governing equations into COMSOL Multiphysics and discuss different simplifications for arrays of two-dimensional thin film systems (magnetoresistive devices) and assemblies of zero-dimensional magnetic moments (superparamagnetic nanoparticles).