Magnetization Reversal in Ultrashort Magnetic Field Pulses
- 12 October 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 81 (15) , 3251-3254
- https://doi.org/10.1103/physrevlett.81.3251
Abstract
Strong in-plane magnetic field pulses of 2–4.4 ps duration are used to study magnetization reversal in perpendicularly magnetized Co/Pt films. Ring domains, reminiscent of the field contour during exposure, are observed later with Kerr microscopy. Their radii represent switching fields which are in quantitative agreement with the coherent rotation model. The observation of intrinsic transition broadening is attributed to the existence of static and dynamic fluctuations of the magnetic anisotropy.Keywords
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