Angular dependence of the magnetization relaxation in Co/Pt multilayers
Angular dependence of the magnetization relaxation in Co/Pt multilayers
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Co/Pt 多层膜中磁化弛豫的角度依赖性
DOI：
10.1088/1361-648x/acfc8f
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Streubel, Robert
中科院分区：
文献类型：
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作者：
Adhikari, Anil;Herrington, Bryce;Nguyen, Nhat;Zielinski, Ruthi Linnea;Mahmood, Ather;Adenwalla, Shireen;Streubel, Robert
我们研究了Co/Pt多层膜中的缺陷对室温磁化反转和弛豫机制的影响，通过角度依赖的磁粘度和矫顽场测量。数据揭示了从钉扎为主的畴壁传播的钉扎为主的和均匀的切换序列的过渡，随着远离正常方向的倾斜增加。在纳米颗粒交换耦合膜的树枝状畴壁传播的主导作用是证实了由缩放的弛豫时间，矫顽场的角度依赖性，和克尔显微镜。
We study the influence of defects in Co/Pt multilayers on the room-temperature magnetization reversal and relaxation mechanisms via angle-dependent magnetic viscosity and coercive field measurements. The data reveal a transition from pinning-dominated domain wall propagation to a sequence of pinning-dominated and uniform switching, with increasing tilt away from the normal direction. The leading role of the dendritic domain wall propagation in the nanogranular exchange-coupled films is corroborated by the scaling of relaxation times, the angular dependence of the coercive field, and Kerr microscopy.