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. (c) 2009 American Institute of Physics
Nonlinear-dynamical-system approach to microwave-assisted magnetization dynamics (invited) / Bertotti, G.; Mayergoyz, I. D.; Serpico, Claudio; D'Aquino, Massimiliano. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - ELETTRONICO. - 105:7(2009), pp. 07B712-1-07B712-5. [10.1063/1.3072075]
Nonlinear-dynamical-system approach to microwave-assisted magnetization dynamics (invited)
SERPICO, CLAUDIO;D'AQUINO, MASSIMILIANO
2009
Abstract
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. (c) 2009 American Institute of PhysicsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
