|
|||||
|
|
| CoFeB/Pt多层膜的垂直磁各向异性研究 | |
| 引用本文： | 刘娜,王海,朱涛.CoFeB/Pt多层膜的垂直磁各向异性研究[J].物理学报,2012,61(16):167504-167504. |
| 作者姓名： | 刘娜 王海 朱涛 |
| 作者单位： | 1. 首都师范大学物理系,北京100048 中国科学院物理研究所 磁学国家重点实验室,北京100190 2. 首都师范大学物理系,北京,100048 3. 中国科学院物理研究所 磁学国家重点实验室,北京,100190 |
| 基金项目： | 国家自然科学基金(批准号: 50871120, 11079052, 11174354)资助的课题. |
| 摘 要： | 具有垂直磁各向异性的磁性纳米结构是自旋转移力矩器件的重要研究内容, 本文采用反常霍尔效应系统地研究了磁控溅射法制备的CoFeB/Pt]n多层膜的垂直磁各向异性. 当CoFeB的厚度小于0.6 nm时, 可以在CoFeB/Pt]n多层膜中观察到清晰的垂直磁各向异性, 其垂直磁各向异性强烈依赖于CoFeB和Pt层厚度及多层膜周期数. 当多层膜周期数n ≥ 5时, 出现零剩磁现象. 另外, CoFeB/Pt]n多层膜的矫顽力均小于2 kA·m-1, 有望作为垂直自由层的重要侯选材料应用于垂直磁纳米结构中. |
| 关 键 词： | 磁性多层膜 垂直磁各向异性 反常霍尔效应 |
| 收稿时间： | 2011-09-05 |
Perpendicular magnetic anisotropy in the CoFeB/Pt multilayers by anomalous Hall effect |
|
| Liu Na,Wang Hai,Zhu Tao.Perpendicular magnetic anisotropy in the CoFeB/Pt multilayers by anomalous Hall effect[J].Acta Physica Sinica,2012,61(16):167504-167504. | |
| Authors: | Liu Na Wang Hai Zhu Tao |
| Institution: | 1. Department of Physics, Capital Normal University, Beijing 100048, China;2. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
| Abstract: | The perpendicular magnetic anisotropy(PMA) in as-depositedCoFeB/Pt]_n multilayer is studied by using anomalous Hall effect. A clear PMA is observed in the ultrathin(~0.5 nm) amorphous CoFeB layer sandwiched by Pt.The PMA in as-depositedCoFeB/Pt]_n multilayers is strongly dependent on the thicknesses of CoFeB,Pt,and the number of CoFeB/Pt bilayers.With the increase of the number of CoFeB/Pt bilayers(n≥5),the hysteresis loop changes from rectangular to bow-tie shaped,and then the net moment approaches to zero in the remnant state.Moreover,the coercivty ofCoFeB/Pt]_n multilayers is much low,which meets the requirement for free perpendicular electrode in the future spintronic device. |
| Keywords: | magnetic multilayer perpendicular magnetic anisotropy anomalous Hall effect |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《物理学报》浏览原始摘要信息 | |
| 点击此处可从《物理学报》下载免费的PDF全文 | |