Role of film thickness and disorder in tuning perpendicular magnetic anisotropy in GdTb-FeCo alloy films

Role of film thickness and disorder in tuning perpendicular magnetic anisotropy in GdTb-FeCo alloy films
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薄膜厚度和无序性在调节 GdTb-FeCo 合金薄膜垂直磁各向异性中的作用

DOI:
10.1088/1402-4896/abd43f
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发表时间:
2020
期刊:
影响因子:
2.9
通讯作者:
J. Mohanty
J. Mohanty
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
A. Sahoo;J. A. Chelvane;J. Mohanty

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为了追求可调谐垂直磁各向异性(PMA),探索了不同厚度(30、50、75、150 和 300 nm)的基于 GdTb-FeCo 的四元系。在较高的膜厚度下,自旋重新取向和强 PMA 很明显。已观察到多种微观域可称为域中的无序。在各种薄膜中观察到类 Gd 和类 Tb 贡献域。在 150 nm 处观察到临界厚度,其中大多数 Tb 亚晶格比 Gd 亚晶格占主导地位。磁性参数在 150 nm 处不遵循趋势,这可能是由于阻碍磁畴壁运动的钉扎位点范围较小。 3D 微磁模拟对实验结果进行了补充。
GdTb-FeCo based quaternary system of various thicknesses (30, 50, 75, 150, and 300 nm) is explored in pursuit of tuneable perpendicular magnetic anisotropy (PMA). Spin reorientation and strong PMA is evident at higher film thickness. A variety of microscopic domains can be referred to as disorder in domains, have been observed. Gd-like and Tb-like contributing domains are observed in various films. A critical thickness is observed at 150 nm, where most of the Tb-sublattices are dominated over the Gd-sublattices. Magnetic parameters do not follow the trend at 150 nm, which could be attributed to a lesser extent of pinning sites impeded to domain wall motions. The experimental finding is complemented with 3D micromagnetic simulations.
DOI: 10.3389/fmats.2016.00008
发表时间: 2016-02-16
影响因子: 3.2
作者:
Hebler, Birgit;Hassdenteufel, Alexander;Albrecht, Manfred
通讯作者: Albrecht, Manfred
DOI: 10.1063/1.4759109
发表时间: 2012-10-15
影响因子: 4
作者:
Alebrand, Sabine;Gottwald, Matthias;Mangin, Stephane
通讯作者: Mangin, Stephane