Magnetic domain observation of FeCo thin films fabricated by alternate monoatomic layer deposition
Magnetic domain observation of FeCo thin films fabricated by alternate monoatomic layer deposition
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DOI：
10.1063/1.4862910
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发表时间：
2014-01-28
影响因子：
3.2
通讯作者：
Takanashi, K.
中科院分区：
文献类型：
--
作者：
Ohtsuki, T.;Kojima, T.;Takanashi, K.
采用交替单原子层沉积方法在 Cu3Au 缓冲层上制备 FeCo 薄膜，其面内晶格常数非常接近预测值，从而获得较大的磁各向异性常数。通过反射高能电子衍射研究了沉积过程中面内晶格常数的变化。还通过光电子发射显微镜观察磁畴图像，以便从微观上了解磁结构。结果，特定元素的磁域图像显示 Fe 和 Co 磁矩平行排列。从不同方位角获得的一系列图像表明，FeCo薄膜沿<110>方向表现出四重面内磁各向异性，并且磁畴结构仅由90度壁组成。 (C) 2014 AIP 出版有限责任公司。
FeCo thin films are fabricated by alternate monoatomic layer deposition method on a Cu3Au buffer layer, which in-plane lattice constant is very close to the predicted value to obtain a large magnetic anisotropy constant. The variation of the in-plane lattice constant during the deposition process is investigated by reflection high-energy electron diffraction. The magnetic domain images are also observed by a photoelectron emission microscope in order to microscopically understand the magnetic structure. As a result, element-specific magnetic domain images show that Fe and Co magnetic moments align parallel. A series of images obtained with various azimuth reveal that the FeCo thin films show fourfold in-plane magnetic anisotropy along < 110 > direction, and that the magnetic domain structure is composed only of 90 degrees wall. (C) 2014 AIP Publishing LLC.