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利用液相电化学方法,以乙酰丙酮铁的甲醇溶液为碳源,在单晶硅表面制备了铁-非晶碳磁性纳米复合薄膜。通过扫描电子显微镜、X射线衍射、X射线光电子能谱和Raman光谱技术分析了薄膜组成、形貌和结构。结果表明:Fe掺杂的非晶碳膜为含有Fe、Fe_3O_4纳米晶和非晶碳基的复合结构。和未掺杂非晶碳膜相比,Fe掺杂的薄膜具有更高的sp2碳含量和无序度。磁滞回线显示Fe掺杂的薄膜具有软磁特性,沿薄膜表面方向为易磁化方向。
An iron-amorphous carbon magnetic nanocomposite film was prepared on the surface of monocrystalline silicon by the liquid-phase electrochemical method using iron acetylacetonate in methanol as the carbon source. The composition, morphology and structure of the films were analyzed by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy. The results show that the Fe-doped amorphous carbon film is a composite structure containing Fe, Fe_3O_4 nanocrystals and amorphous carbon. Fe-doped films have higher sp2 carbon content and disorderedness than undoped amorphous carbon films. The hysteresis loop shows that the Fe-doped film has the soft magnetic property and is easy to magnetize along the surface of the film.