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Science 20 October 2000:
Vol. 290. no. 5491, pp. 466 - 467
DOI: 10.1126/science.290.5491.466
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Perspectives

MAGNETISM:
Magnets Fast and Small

Jacques Miltat and André Thiaville

As magnetic devices become smaller and faster, it is becoming increasingly important to understand the dynamics of magnetic domains on small spatial and temporal scales. In their Perspective, Miltat and Thiaville highlight the report by Acremann et al., whose magnetooptical microscope combines state of the art space and time resolution, thus allowing the precessional motion of magnetic domains to be studied directly. The dynamics they observe are complex, indicating that in both the space and time domains, neither the magnetization nor the applied field should be viewed as uniform.

The authors are at the Laboratoire de Physique des Solides, Université Paris-Sud, Orsay Cedex, 91405 France. E-mail: miltat{at}lps.u-psud.fr

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Science. ISSN 0036-8075 (print), 1095-9203 (online)