Abstract
The unidirectional anisotropies of NiFe Permalloy thin films exchange-coupled to nickel oxide films are analyzed. Studies were made on ferromagnetic-antiferromagnetic of NiFe/NiO bilayer structures as a function of layers thicknesses. For a 100 /spl Aring/ thick Ni/sub 81/Fe/sub 19/ film deposited on top of a 400 /spl Aring/ thick NiO film, an exchange anisotropy field (H/sub e/) of 115 Oe is obtained at room temperature after field-cooled from 200/spl deg/C. The equivalent interfacial exchange coupling energy is 0.09 ergs/cm/sup 2/.
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