Title :
Time dependent magnetics of exchange biased spin valves
Author :
Mao, Sining ; Yang, Zhijun ; Gao, Zheng ; Han, Dehua ; Pokhil, Taras
Author_Institution :
Seagate Recording Heads, Minneapolis, MN, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
Different sweep field rates result in different pinning field and coercivity in the pinned layer of a spin valve. Annealed samples showed more profound time dependent magnetic properties as compared to the as-made films. The pinning field decreases with the sweep rate if the AFM layer is thinner than a minimum thickness. The coercivity increases with the sweep rate and is also FM layer thickness dependent. The thin FM layer showed less effect than the thicker FM layer
Keywords :
annealing; antiferromagnetic materials; coercive force; exchange interactions (electron); ferromagnetic materials; iridium alloys; iron alloys; magnetic heads; magnetic recording; manganese alloys; nickel alloys; platinum alloys; spin valves; IrMn-NiFe; NiMn-NiFe; PtMn-NiFe; annealed samples; antiferromagnetic layer; coercivity; exchange biased spin valves; ferromagnetic layer; magnetic recording heads; pinned layer; pinning field; sweep field rates; time dependent magnetics; Annealing; Antiferromagnetic materials; Coercive force; Frequency; Magnetic films; Magnetic heads; Magnetic properties; Magnetic recording; Spin valves; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
