Nonlinear-dynamical-system approach to microwave-assisted magnetization dynamics (invited)

Methods of nonlinear-dynamical-system theory are applied to the study of magnetization dynamics under the action of microwave magnetic fields. In the case of a system with uniaxial anisotropy subject to a circularly-polarized microwave field, the conditions are derived under which the magnetization...

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Bibliographic Details
Published inJournal of applied physics Vol. 105; no. 7; pp. 07B712 - 07B712-5
Main Authors Bertotti, G., Mayergoyz, I. D., Serpico, C., d'Aquino, M., Bonin, R.
Format Journal Article
LanguageEnglish
Published American Institute of Physics 01.04.2009
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ISSN0021-8979
1089-7550
DOI10.1063/1.3072075

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Summary:Methods of nonlinear-dynamical-system theory are applied to the study of magnetization dynamics under the action of microwave magnetic fields. In the case of a system with uniaxial anisotropy subject to a circularly-polarized microwave field, the conditions are derived under which the magnetization reversal field is substantially reduced by the application of the microwave field. The dependence of magnetization switching on microwave-field-pulse duration is discussed and analytical expressions are derived for the minimum pulse duration leading to switching.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3072075