氧化锌掺钴薄膜铁磁特性的研究

采用电子束反应蒸发法（REBE）生长钴掺杂的氧化锌（Zn1-xCoO x=0．1）薄膜，研究薄膜的铁磁特性．对Zn1-xCoxO薄膜的磁特性测量结果表明：薄膜具有室温（300K）铁磁性；Zn1-xCoxO薄膜，无论外部磁场平行或垂直于薄膜平面，其室温矫顽力均仅为6～7G，呈现典型的稀磁及磁各向同性特征；而对于多晶Zn1-CoxO薄膜，其室温矫顽力在200～370G之间展示出显著的磁化各向异性特征；同时讨论了薄膜的铁磁性起源及其各向异性机理．

Research of Ferromagnetic Property for Zn1-xCoxO Thin Films

ZnO doped Co thin films are grown by reactive electron beam evaporation（ REBE）, and the magnetic properties are investigated. The results show that thin films took on ferromagnetic properties with room temperature（above 300 K）. Znl -xCoxO thin films,when the exterior magnetic fields are paraell or vertical for the face of films,the room temperature coercive force are only 6 - 7 G, show the characters of diulted magnetic semoconductor（DMS）and isotropy. However, when the coercive force is 200 - 370 G, the films indicate anisotropy. The origin for ferromagnetic properties and the anisotropism mechanism are discussed here.