Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 305, Issue 1, Pages 182-185Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2005.12.010
Keywords
spin wave resonance; magnetic dots; anisotropy
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Eigen spin wave frequencies and profiles of a cobalt hexagonal dot with exchange and anisotropy energies are derived. The lowest mode frequency is shown to be a linear function of edge anisotropy, so edge anisotropy controls the whole dot magnetization reversal and can be measured from spin wave resonance. The low-temperature dependence of cobalt dot magnetization is shown to be driven by edge anisotropy as well. (c) 2006 Elsevier B.V. All rights reserved.
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