Fig. 1
Film design and structure. (a) Schematics of the three structures studied, the single-layer (left) has a fixed composition, while the composition in the continuously modulated composition (CMC) film (right) varies sinusoidally along the depth of the film z. The multilayer (center) is designed to have the same wavelength and extrema as the CMC. The dark blue and light blue regions are intrinsically ferromagnetic (FM) and paramagnetic (PM), respectively. The AlZr capping and wetting layers are left out of the diagram. (b) XRR measurements of a single-layer (86.5 at%), the CMC and the ML. The measurements are shifted in intensity for clarity. The solid lines are fitted in GenX with a \(\sin ^4\)(\(2\theta\)) weighted FOM below \(1.3 \times 10^{-4}\). The inset displays the scattering length density (SLD), as a function of the depth z, for the CMC and the ML.
