2003/07/21 by David L. Mobley, D L Mobley, Christopher R. Pike +7 · 1 citation
Materials Science · Physics and Astronomy · #Magnetic Properties and Applications #Magnetic properties of thin films #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1088/0953-8984/16/32/022
4.5 pages, 5 figures
arxiv created 2003/07/21 · openalex publication_date 2004/08/03 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We develop a phenomenological model to study magnetic hysteresis in two samples designed as possible perpendicular recording media. A stochastic cellular automata model captures cooperative behavior in the nucleation of magnetic domains. We show how this simple model turns broad hysteresis loops into loops with sharp drops like those observed in these samples, and explains their unusual features. We also present, and experimentally verify, predictions of this model, and suggest how insights from this model may apply more generally.