Temperature dependence of the microscopic magnetization process of Tb12Co88 using magnetic Compton scattering
Temperature dependence of the microscopic magnetization process of Tb12Co88 using magnetic Compton scattering
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DOI：
10.1016/j.jmmm.2019.04.031
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发表时间：
2019-08
影响因子：
2.7
通讯作者：
A. Agui;Akino Harako;Akane Shibayama;Kento Haishi;N. Tsuji;Xiaoix Liu;Chuang Ma;H. Sakurai
中科院分区：
文献类型：
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作者：
A. Agui;Akino Harako;Akane Shibayama;Kento Haishi;N. Tsuji;Xiaoix Liu;Chuang Ma;H. Sakurai
Tb-Co垂直磁化薄膜是垂直磁记录介质的母材。由于磁记录技术基于材料的磁开关，因此研究材料对磁场的磁响应是重要的。整个系统的磁响应是元素的自旋磁矩和轨道磁矩的每个微观响应的净。本文通过测量Tb 12 Co 88薄膜的磁康普顿分布的磁场依赖性，研究了自旋、轨道和元素特定磁矩的磁化过程.自旋磁矩和轨道磁矩具有相反的取向。类似地，Tb和Co磁矩具有相反的方向。当总磁矩反转时，自旋和轨道磁化以及Tb和Co的取向反转。随着温度的降低，Tb的垂直方向磁矩的起伏减小。因此，Tb和Co磁矩之间的抵消减少了总磁矩。
Tb-Co perpendicular magnetization films are mother materials for perpendicular magnetic recording media. Since the magnetic recording technique is based on magnetic switching of a material, investigating a magnetic the response of the material to a magnetic field is important. The magnetic response of the entire system is the net of each microscopic response of the spin magnetic moment and orbital magnetic moment of the elements. Herein we study the magnetization processes of the spin, orbital, and the element-specific magnetic moments by measuring the magnetic field dependence of the magnetic Compton profile of a Tb12Co88film. The spin and orbital magnetic moments have opposite orientations. Similarly, Tb and Co magnetic moments have opposite directions. When the total magnetic moment reverses, the orientation of spin and orbital magnetization as well as Tb and Co reverse. Decreasing the temperature, the fluctuation of the magnetic moment of Tb in the perpendicular direction decreases. So the cancelation between the Tb and Co moments reduces total magnetic moment.