Title :
Magnetic properties and switching field control of antiferromagnetically coupled recording media
Author :
Piramanayagam, S.N. ; Wang, J.P. ; Shi, X. ; Pang, S.I. ; Pock, C.K. ; Shan, Z.S. ; Chong, T.C.
Author_Institution :
Data Storage Inst., Singapore
fDate :
7/1/2001 12:00:00 AM
Abstract :
Recently proposed antiferromagnetic-coupled (AFC) media is studied in detail. The parameters, which control the switching field of the stabilizing layer and hence, the Mrδ reduction are understood by theory and experiment. It was observed that the switching field of the stabilizing layer could be controlled by experimental parameters to be on either side of remanence. Mrδ reduction could be achieved by a reduction of anisotropy constant, thickness or magnetization of the stabilizing layer. The coercivity and thermal stability of the AFC media is larger than that of a single magnetic layer
Keywords :
coercive force; magnetic anisotropy; magnetic recording; magnetic switching; magnetic thin films; remanence; thermal stability; anisotropy constant; antiferromagnetically coupled medium; coercivity; magnetic properties; magnetic recording; magnetization; remanence; stabilizing layer; switching field control; thermal stability; Anisotropic magnetoresistance; Antiferromagnetic materials; Automatic frequency control; Coercive force; Magnetic anisotropy; Magnetic properties; Magnetic switching; Magnetization; Remanence; Thermal stability;
Journal_Title :
Magnetics, IEEE Transactions on
