Magnetization reversal in ultrashort magnetic field pulses

C. H. Back, D. Weller, J. Heidmann, D. Mauri, D. Guarisco, E. L. Garwin, H. C. Siegmann

Research output: Contribution to journalArticlepeer-review

178 Scopus citations

Abstract

Strong in-plane magnetic field pulses of 24.4 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.

Original languageEnglish
Pages (from-to)3251-3254
Number of pages4
JournalPhysical Review Letters
Volume81
Issue number15
DOIs
StatePublished - 1998
Externally publishedYes

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