Picosecond time-resolved magnetization dynamics of thin-film heads
Picosecond time-resolved magnetization dynamics of thin-film heads
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DOI：
10.1063/1.361896
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发表时间：
1996-04-15
影响因子：
3.2
通讯作者：
Smyth, JF
中科院分区：
文献类型：
--
作者：
Freeman, MR;Smyth, JF
介绍了皮秒磁光采样技术在薄膜记录头磁化动力学研究中的应用。时间分辨磁化测量是使用皮秒频闪扫描克尔显微镜进行的。在相同的光学设置下，使用法拉第探头来监控线圈励磁电流，从而直接测量通过磁头的磁传播延迟。这种延迟被发现在磁极尖端的表面上具有明显的空间依赖性。作为空间相关性可视化的辅助，采集了在固定时间延迟的极克尔旋转的扫描图像。(C)1996年美国物理研究所。
The application of picosecond magneto-optic sampling techniques to studies of the magnetization dynamics of thin-film recording heads is described. Time-resolved magnetization measurements are performed using picosecond stroboscopic scanning Kerr microscopy. A Faraday probe is used to monitor the coil excitation current with the same optical setup, yielding a direct measure of the magnetic propagation delay through the head. This delay is found to have a marked spatial dependence across the face of the pole tips. As an aid to visualization of the spatial dependence, scanned images of the polar Kerr rotation at fixed time delays are acquired. (C) 1996 American Institute of Physics.