Strain-induced enhancement of coercivity in amorphous TbFeCo films
Strain-induced enhancement of coercivity in amorphous TbFeCo films
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DOI：
10.1063/1.4788807
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发表时间：
2013-01-28
影响因子：
3.2
通讯作者：
Lu, Jiwei
中科院分区：
文献类型：
--
作者：
Anuniwat, Nattawut;Ding, Manli;Lu, Jiwei
我们报告了一个强的非晶铁磁TbFeCo薄膜的矫顽力的大小依赖性。所沉积的膜表现出低的饱和磁化强度（M-S类似于100 emu/cc）和高的垂直各向异性（K-U类似于10（6）erg/cc）。制备了霍尔栅器件，用于表征磁输运行为。在室温下，随着霍尔条宽度的减小，观察到非磁性的显著增加（高达接近300%）。大的矫顽力提高归因于薄膜应力的弛豫。TbFeCo中的应变和维度对双折射率的影响使其在未来纳米器件中具有可调双折射率和磁化反转的吸引力。(C)2013年美国物理学会。[http：//dx.doi.org/10.1063/1.4788807]
We report a strong size dependence of coercivity in amorphous ferrimagnetic TbFeCo films. The as-deposited film exhibited a low saturation magnetization (M-S similar to 100 emu/cc) and a high perpendicular anisotropy (K-U similar to 10(6) erg/cc). Hall-bar devices were fabricated for characterizing the magneto-transport behaviors. A significant increase in coercivity (up to similar to 300%) was observed at room temperature as the width of Hall bar was reduced. The large coercivity enhancement was attributed to the relaxation of film stress. The effect of strain and dimensionality on the coercivity in TbFeCo makes it attractive for tunable coercivity and the magnetization reversal in future nanoscale devices. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788807]