AFM images of the Cr2O3 surface of films (a) without Pt buffer layer and (b) with Pt buffer layer after annealing (2 μm × 2 μm).
Magnetization curve of the film without Pt at (a) 70 K and (b) 200 K and the film with Pt at (c) 70 K and (d) 200 K for the out-of-plane direction.
Vector diagram of angles in an exchange bias system involving angles α, β, θ, and ϕ. H, MFM/AF, and KFM/AF are the applied magnetic field, the magnetic moment of FM/AF, and uniaxial anisotropy of FM/AF, respectively.
Temperature dependence of unidirectional magnetic anisotropy energy JK of film without Pt (●) and film with Pt (★) for the out-of-plane direction.
Values of Mr/Ms, μ0Hc, and μ0Hex of films without and with Pt at 70 K and 200 K.
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