Abstract Epitaxial growth of ferromagnetic Rh2Mn5Bi4 thin films from the family of X2Mn5Bi4 (X = Cu, Ni, Pd and Rh) compounds was pursued employing magnetron sputtering on MgO(001) substrates. Composition, structure and microstructure of prepared films were studied using a wide range of diffraction, microscopy and spectroscopy techniques, while Superconducting quantum interference device and Magneto-Optical Kerr Effect were used for magnetic and magneto-optical characterizations. The huge difference between Rh and Bi in their physicochemical properties - melting points, vapor pressures and deposition yields - manifested in a substantial influence of growth temperature on resulting properties of prepared films. Rh2Mn5Bi4 alloy with characteristic microstructure and favorable ferromagnetic and magneto-optical response was obtained after growth at 400°C. The arrangement of Mn atoms within the structure should give rise to the magnetic moment in a similar fashion as in Heusler alloys. Curie temperature of these films was found to be 270 K. The films appear to be promising for magnetic or spintronic applications.

中文翻译：

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MgO(001)上外延生长的铁磁Rh2Mn5Bi4薄膜合金

摘要 采用磁控溅射在 MgO(001) 衬底上外延生长来自 X2Mn5Bi4（X = Cu、Ni、Pd 和 Rh）化合物家族的铁磁 Rh2Mn5Bi4 薄膜。使用广泛的衍射、显微镜和光谱技术研究了所制备薄膜的组成、结构和微观结构，而超导量子干涉装置和磁光克尔效应用于磁性和磁光表征。Rh 和 Bi 的物理化学性质 - 熔点、蒸气压和沉积产率 - 之间的巨大差异表现在生长温度对制备的薄膜的最终性质的重大影响。Rh2Mn5Bi4 合金在 400°C 下生长后获得了具有特征显微组织和良好的铁磁和磁光响应的合金。Mn 原子在结构内的排列应该以与 Heusler 合金类似的方式产生磁矩。发现这些薄膜的居里温度为 270 K。这些薄膜似乎有望用于磁性或自旋电子应用。