Influence of Film Roughness on the Soft Magnetic Properties of Fe/Ni Multilayers
LUO Zhi-Yuan1, TANG Jia1, MA Bin1,2**, ZHANG Zong-Zhi1, JIN Qing-Yuan1**, WANG Jian-Ping2
1Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and Department of Optical Science and Engineering, Fudan University, Shanghai 200433 2The Center for Micromagnetics and Information Technologies (MINT), and Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
Abstract：The influence of surface/interface roughness on the magnetic properties of Fe/Ni multilayers is investigated. Two methods are employed to tune the film roughness: one varies the substrate temperature, and the other pre-deposits a Ag underlayer on the MgO substrate. For films with higher roughness, a marked rise in coercivity is observed. Three factors are discussed to be mainly responsible for the coercivity rise, involving the formation of pinholes, the reduction of exchange coupling between Fe and Ni layers, and Fe-Ni alloying at interfaces.
. [J]. Chin. Phys. Lett., 2012, 29(12): 127501-127501.
LUO Zhi-Yuan, TANG Jia, MA Bin, ZHANG Zong-Zhi, JIN Qing-Yuan, WANG Jian-Ping. Influence of Film Roughness on the Soft Magnetic Properties of Fe/Ni Multilayers. Chin. Phys. Lett., 2012, 29(12): 127501-127501.
2012, Vol. 29 
