Abstract

The influence of the electrodeposition potential on the compositional, magnetic, and microstructural properties of CoFe alloy thin films grown on a Cu sputtered silicon substrate was studied. Grazing incidence X-ray diffraction results indicate a diffraction peak at 2θ ≈ 45° related to (110) plane of a body-centered cubic structure of CoFe alloy. Field emission scanning electron microscopy images reveal densely packed uniform nano-granular morphology in all films. Energy-dispersive X-ray spectroscopy results indicate a variation in CoFe alloy film composition while varying the deposition potential, attributed to anomalous co-deposition. The magnetic hysteresis loop measurement shows films are having an easy magnetic direction oriented along in-plane, with high saturation and low coercivity. Surface and microscopic magnetization measurements prove that the deposition potential modifies the film roughness and influences the magnetic domain formation.

中文翻译：

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沉积势对纳米晶CoFe合金薄膜结构和磁性的影响

摘要

研究了电沉积电势对在铜溅射硅衬底上生长的CoFe合金薄膜的成分，磁性和微观结构性能的影响。掠入射X射线衍射结果表明在2θ的衍射峰≈与CoFe合金的体心立方结构的（110）平面成45°角。场发射扫描电子显微镜图像显示了所有薄膜中密集堆积的均匀纳米颗粒形态。能量色散X射线光谱分析结果表明，由于异常共沉积，CoFe合金膜成分发生了变化，同时沉积电位也发生了变化。磁滞回线测量表明，薄膜具有沿平面内定向的易磁化方向，具有高饱和度和低矫顽力。表面和微观磁化测量证明，沉积电势会改变膜的粗糙度并影响磁畴的形成。