摘要
The dependence of giant magnetoresistance of sputtered granular type(Co-Ag)/Ag multilayers on the thickness of Ag layers and magnetic layers with varying Co content in the magnetic layers was studied.The magnetoresistance ratioΔR/R was found to be enhanced by 2-7 times comparing with the single layer granular films.The enhancement was explained by the antiferromagnetic coupling due to magnetostatic interaction between the Co clusters in neighboring magnetic layers.
作者
游彪
周仕明
陈良尧
赵宏武
夏钶
杜军
童六牛
鹿牧
翟宏如
YOU Biao;ZHOU Shi-ming;CHEN Liang-yao;ZHAO Hong-wu;XIA Ke;DU Jun;TONG Liu-niu;LU Mu;ZHAI Hong-ru(Center of Materials Analysis,National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093;also Center for Advanced Studies in Science and Technology of Microstructures,Nanjing 210093;T.-D.Lee Physics Laboratory and Department of Physics,Fudan University,Shanghai 200433)
基金
Supported by the National Natural Science Foundation of China under Grant Nos.19754001 and 59392800,and Shanghai Research Center for Applied Physics.
