Fig. 1: Sample stack, hysteresis loops, and XAS/XMCD geometry and measurements.
From: Proximity-induced flipped spin state in synthetic ferrimagnetic Pt/Co/Gd heterolayers
In a schematic representation of the Pt/Co/Gd heterolayer, corresponding to one stacking unit (to be repeated 10 × ). In b hysteresis loops acquired for both in-plane (IP) and out-of-plane (OOP) magnetic fields. X-ray absorption (XAS) and X-ray magnetic circular dichroism XMCD geometries applied in the measurements displayed in (c) where μ+ (μ−) denote the right and left circularly polarized X-rays, respectively, and Hext the external applied magnetic field. In d, e XAS acquired for right and left circularly polarized X-rays around the Co absorption edges for 1 and 9 T magnetic fields. In (f) the resultant XMCD for both magnetic fields. XAS measured around the Gd absorption edges for 1 and 9 T magnetic fields are shown in (g, h), respectively. The resultant XMCD displayed in i shows different amplitudes in comparison for each field.
