Fe/Ru multilayers were prepared by high vacuum e-gun evaporation system and the samples were studied by HRTEM and VSM. The interface structure of Fe/Ru multilayers with different thickness and its effects on magnetic properties were analyzed. Results show that the Fe/Ru multilayers have good periodic structure. When Fe layer is very thin, Fe layer is not continuous and the multilayer show a superparamagnetic property due to the Fe particles distributed as islands. HRTEM of Fe/Ru interface shows the difference in roughness between the two interfaces of Fe/Ru. The origin of the positive magnetoresistance (MR) is related to the difference in roughness, in which the scattering spin asymmetry is less than one. After annealing in vacuum, the negative MR of multilayer is increased greatly, indicating that it is originated from the roughness of the interlayer.
耿魁伟,姚若河. Fe/Ru界面对多层膜磁性的影响[J].稀有金属材料与工程,2011,40(8):1426~1429.[Geng Kuiwei, Yao Ruohe. Effects of Fe/Ru Interface on Magnetic Properties of Fe/Ru Multilayer[J]. Rare Metal Materials and Engineering,2011,40(8):1426~1429.] DOI：[doi]