纳米胶体球表面生长的Co/Pt多层膜的磁性研究

Study on Magnetism of Co/Pt Multilayers Deposited on Colloidal Nanosphere

利用自组装技术在Si表面上制备二维有序胶体球阵列,利用磁控溅射系统以此为衬底制备Co/Pt垂直多层膜,形成曲面膜.与沉积在Si表面上相同结构的多层膜做比较,当测量角度在0°-45°之间时,曲面膜的磁滞回线形状几乎无变化,表明转换场分布很窄,这是由各向异性轴在球表面的变化造成的.

Two-dimensional ordered colloid particles were deposited onto the silicon substrate by the self-assembly process. This paper fabricated perpendicular multilayer film Co/Pt on the curved substrate with the magnetron sputtering system. In contrast to the same multilayer film deposited on flat Si substrate,the squareness hysteresis loops remained almost unchanged between 0° and 45° for the curved film,which indicated a narrow distribution of the switch field. All the observations were attributed to the variation of the anisotropic axis across the surface of the sphere.