We suggest a workable approach for the description of multiscale magnetization reversal phenomena in nanoscale magnets and apply it to CoPt-type alloys. We show that their hysteretic properties are governed by two effects originating at different length scales: a peculiar splitting of domain walls and their strong pinning at antiphase boundaries. We emphasize that such multiscale nature of hysteretic phenomena is a generic feature of nanoscale magnetic materials.
@article{arxiv.cond-mat/0110526,
title = {Multiscale nature of hysteretic phenomena: Application to CoPt-type magnets},
author = {K. D. Belashchenko and V. P. Antropov},
journal= {arXiv preprint arXiv:cond-mat/0110526},
year = {2009}
}