Nonlinear-dynamical-system approach to microwave-assisted magnetization dynamics (invited)
Nonlinear-dynamical-system approach to microwave-assisted magnetization dynamics (invited)
复制标题
微波辅助磁化动力学的非线性动力系统方法（特邀）
DOI：
10.1063/1.3072075
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发表时间：
2009
影响因子：
3.2
通讯作者：
R. Bonin
中科院分区：
文献类型：
--
作者：
G. Bertotti;I. Mayergoyz;C. Serpico;M. d’Aquino;R. Bonin
将非线性动力系统理论的方法应用于微波磁场作用下的磁化动力学研究。对于具有单轴各向异性的系统，在圆极化微波场作用下，推导了微波场的作用能大大减小磁化反转场的条件。讨论了磁化开关与微波场脉冲持续时间的关系，导出了导致开关的最小脉冲持续时间的解析表达式。
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.