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Home > Issues > Volume 6 (2001) > No.4(pp.109-145)Effect of Interface Roughness on Magnetoresistance of[Ni/Mn] Superlattice-Based Spin Valves
Journal of Magnetics, Volume 6, Number 4, 31 Dec 2001, Pages 145-147
J.R. Rhee* 
(Dept. of Physics, Sookmyung Women′s Univ.), M.Y. Kim(Dept. of Physics, Sookmyung Women′s Univ.), J.Y. Hwang(Dept. of Physics, Sookmyung Women′s Univ.), S.S. Lee(Dept. of Computer and Electronic Physics, Sangji Univ.)
(Dept. of Physics, Sookmyung Women′s Univ.), M.Y. Kim(Dept. of Physics, Sookmyung Women′s Univ.), J.Y. Hwang(Dept. of Physics, Sookmyung Women′s Univ.), S.S. Lee(Dept. of Computer and Electronic Physics, Sangji Univ.)
Abstract
The effect of interface roughness between [Ni/Mn] superlattice and pinned NiFe layer on magnetoresistance (MR) of [Ni/Mn] superlattice-based spin valve films was investigated. Antiferromagnetic phase structure and interface roughness of [Ni/Mn] superlattice spin valve films were compared in the as-deposited and the annealed samples at 240℃, respectively. Surface morphology of spin valves was substantially flattened due to the formation of the antiferromatic NiMn phase. In case of Co insertion between Cu and NiFe, the interlace roughness and MR ratio in the annealed [NiMn] superlattice and pinned NiFe/Co layer increased more than those in the annealed [Ni/Mn] superlattice and pinned NiFe layers respectively.
Keywords: Interface roughness; Antiferromagnetic phase; [Ni/Mn] superlattice-based spin valve; Thermal treatment
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