The bottom layer(BL)/cobalt(Co)/top layer(CL)three-layer film was prepared by magnetron sputtering,the thermal-stability of single Cobalt(Co)layer with variety adjacent bottom layer(BL)and capping layer(CL)was systematically studied by analyzing the magnetic moment temperature(T)-dependence behavior in the BL/Co/CL trilayers.Here,BL and CL represent the nonmagnetic transition metals(TMs)tantalum(Ta),titanium(Ti)and niobium(Nb).It is found that different non-magnetic bottom and top materials have different effects on the thermal stability of Co,and Co has the best thermal stability when Ti is used as BL and CL.In addition,compared with BL,CL has a more important effect on M-T in the Co layer,and the same CL has a similar M-T curve for Co.The experimental results can be interpreted as the coupling interaction between non-magnetic BL and CL and Co.This reveals that in nanoscale multilayer films,the bottom nonmagnetic buffer layer and the top protective layer,which are commonly used to promote crystal structure and prevent oxidation,may have an impact on the magnetic properties of their adjacent magnetic layers.
维普
万方数据