Dynamical mechanism for coercivity tunability in the electrically controlled FePt perpendicular films with small grain size
Dynamical mechanism for coercivity tunability in the electrically controlled FePt perpendicular films with small grain size
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DOI：
10.1063/1.4861738
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发表时间：
2014-01
影响因子：
3.2
通讯作者：
C. Feng;Meiyin Yang;Kui Gong;Xu-Jing Li;Baohe Li;Yong Jiang;Guang-Hua Yu
中科院分区：
文献类型：
--
作者：
C. Feng;Meiyin Yang;Kui Gong;Xu-Jing Li;Baohe Li;Yong Jiang;Guang-Hua Yu
本文报道了电迁移控制的FePt垂直薄膜的性质操纵和相关的动力学演化。通过改变施加在薄膜上的电源电压和处理时间，快速控制电子动量，从而基于动量交换操纵Fe和Pt原子的动能。电迁移控制行为被证明是导致可控的有序度和晶粒生长的薄膜，而无需热处理。制备的FePt薄膜具有晶粒尺寸小、磁晶各向异性高、磁性可控等特点。研究结果为其他L10结构薄膜的磁性能调节提供了一种新的方法。
This article reports property manipulations and related dynamical evolution in electromigration controlled FePt perpendicular films. Through altering voltage and treatment time of the power supply applied on the films, electronic momentum was fleetly controlled to manipulate the kinetic energy of Fe and Pt atoms based on momentum exchanges. The electromigration control behavior was proven to cause steerable ordering degree and grain growth in the films without thermal treatment. Processed FePt films with small grain size, high magnetocrystalline anisotropy, and controllable coercivity can be easily obtained. The results provide a novel method for tuning magnetic properties of other L10 structured films.