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Publication Citation: Magnetization Reversal in Ultrathin Films with Monolayer-Scale Surface Roughness

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Author(s): A Moschel; A Zangwill; R Hyman; Mark D. Stiles;
Title: Magnetization Reversal in Ultrathin Films with Monolayer-Scale Surface Roughness
Published: January 01, 1996
Abstract: The intrinsic anisotropy of nominally flat, ultrathin ferromagnetic films typically is augmented by a uniaxial anisotropy at step edges. We report model calculations of hysteresis for such systems with in-plane magnetization and monolayer scale roughness. The reversal process is a combination of domain nucleation at step edges, expansion of these domains through morphological constrictions, and coherent rotation within domains. The initiation of reversal at well-separated step edges can explain the very small coercive fields measured for real ultrathin magnetic films.
Citation: Physical Review Letters
Volume: 77
Issue: 17
Pages: pp. 3653 - 3656
Research Areas: Nanomagnetics
PDF version: PDF Document Click here to retrieve PDF version of paper (294KB)