物理学报2001，Vol.50Issue(1)：153-158,6.
磁性薄膜原子层数对极化方向的影响
THE INFLUENCE OF THE NUMBER OF ATOMIC SHEET ON THE DIRECTION OF MAGNETIZATION IN THIN FERROMAGNETIC FILM
摘要
Abstract
The competition between dipole-dipole interaction and surface anisotropy in a thin ferromagnetic film is described by two spin s=1 layered Ising systems.The spin is perpendicular to the layers in one system,and is in-plane in the other system.Free energy densities in the two systems are calculated by use of VCE method.The results show that the magnetization will transfer from perpendicular to in-plane when the number of layers increase.In this process,the influence of dipole-dipole interaction which favors the in-plane magnetization is approximately a constant and that of surface anisotropy which favors the perpendicular magnetization decreases apparently.Finally the dipole-dipole interaction prevails over the surface anisotropy,and then the reorientation transition occurs.关键词
偶极作用/表面各向异性/磁化方向/磁性薄膜分类
数理科学引用本文复制引用
周云松,陈金昌,解东,林多梁..磁性薄膜原子层数对极化方向的影响[J].物理学报,2001,50(1):153-158,6.基金项目
北京市自然科学基金(批准号：2982008)资助的课题. Project supported by the National Natural Science Foundation of Beijing, China. (Grant No.2982008). （批准号：2982008）
