Figure 7
From: Electron beam evaporation of superconductor-ferromagnet heterostructures
Magnetic characteristics Nb(15)/Pt(\(t_{Pt,b}\))/Co(\(t_{Co} )\)/Pt(1.5)/MgO(3) samples, derived from magnetoresistance Hall measurements. Fields have been applied in-plane and swept at 200 Oe/s. (a) Perpendicular anisotropy field, \(H_{K}\), (left axis) estimated from the hard-axis saturation field i.e. an in-plane applied field hall measurement, and the corresponding net anisotropy, \(K_{eff}\), (right axis) as a function of cobalt thickness, \(t_{Co}\), for each bottom Pt thickness. (b) Surface anisotropy per unit cobalt thickness, \(K_{s} /t_{Co}\), as a function of bottom Pt thickness, for the same samples as in (a).
