高取向Fe3O4薄膜中织构诱导的自旋输运和磁化动力学

摘要

多晶材料的性能受到其晶粒群形貌及结构参数如晶粒取向分布函数的严重影响,这种影响在具有各向异性晶体结构的多晶薄膜以及多晶薄膜的电学性能方面表现得尤为突出,比较有代表性的例子就是Fe3O4磁性薄膜.作为一种典型的半金属,Fe3O4由于在费米面处理论上100％的自旋极化率以及适中的电阻率,成为半导体自旋电子学领域的热门材料.针对Fe3 O4薄膜制备中经常出现的(111)取向生长模式,介绍了Fe3O4薄膜中织构结构相关的自旋输运及磁化动力学(磁各向异性)性能的研究进展.%The properties of polycrystalline materials are strongly determined by structural and morphological parameters of the grain population such as the orientation distribution function.This effect becomes especially important if the material exhibits an anisotropic crystal structure or in the case of electronic properties of thin films,such as a typical material systemmagnetite Fe3O4 films.As a typical half metallic material,Fe3O4 magnetic films have attracted much attention in semiconductor spintronics due to its appropriate conductivity and theoretically 100％ spin polarization at Femi level.As (111) texture is a common structure in Fe3O4 films,the paper introduced the current studies on (111)-textured correlated spin transport and magnetic dynamics (magnetic anisotropy) in Fe3O4 films.