Microwave-assisted magnetization reversal in a Co/Pd multilayer with perpendicular magnetic anisotropy
Microwave-assisted magnetization reversal in a Co/Pd multilayer with perpendicular magnetic anisotropy
复制标题
DOI：
10.1063/1.3213559
复制
发表时间：
2009-08
影响因子：
4
通讯作者：
Y. Nozaki;N. Narita;Terumitsu Tanaka;K. Matsuyama
中科院分区：
文献类型：
--
作者：
Y. Nozaki;N. Narita;Terumitsu Tanaka;K. Matsuyama
利用矢量网络分析仪研究了具有垂直磁各向异性的Co/Pd多层膜矩形中的微波辅助磁化反转。沿矩形面内方向施加微波场，外加一个小于矫顽力场的负直流易轴场。微波场作用后，FMR谱峰谱出现增宽或分裂现象，表明形成了多畴结构。多畴结构出现概率的频率依赖性支持了微波辅助磁化成核的优势。
Microwave-assisted magnetization reversal in a rectangle of a Co/Pd multilayer with a perpendicular magnetic anisotropy is examined using vector network analyzer ferromagnetic resonance (FMR) spectroscopy. A microwave field is applied along the in-plane direction of the rectangle together with a negative dc easy-axis field smaller than the coercive field. Broadening or splitting of the peak profile in the FMR spectrum suggesting the formation of multidomain structure appears after the microwave field is applied. The dominance of microwave-assisted nucleation of magnetization is supported by the frequency dependence of the probability with which the multidomain structure appears.