Abstract

The dynamics of the response of the magnetic moment of two oppositely oriented nanoparticles with different values of uniaxial anisotropy to the action of a short Gaussian pulse of magnetic field is studied in this work. The dependence of the response duration on the pulse parameters is established. It is shown that, by selecting the duration and/or amplitude of the pulse, it is possible to reverse the magnetization of either dipole (in this case, the magnetic moment of the system changes from 0 by \( \pm 2\)) or of both dipoles (the magnetic moment is preserved). The effect of the dipole–dipole interaction on the magnetization reversal is revealed.

中文翻译：

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反铁磁偶极子电池的脉冲磁化反转

摘要

在这项工作中，研究了具有不同单轴各向异性值的两个方向相反的纳米粒子的磁矩对短高斯磁场脉冲作用的响应动力学。建立了响应持续时间对脉冲参数的依赖性。结果表明，通过选择脉冲的持续时间和/或振幅，可以反转任一偶极子的磁化强度（在这种情况下，系统的磁矩从0改变\（\ pm 2 \））或两个偶极子（磁矩被保留）。揭示了偶极-偶极相互作用对磁化反转的影响。