2026-06-03T01:03:48Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2049623240 2025-04-22T06:00:41.760Z

4.2 EI 10.15151/ESRF-ES-2049623240 Verena NEY Verena Ney 0000-0001-9413-8649 Verena NEY Verena Ney 0000-0001-9413-8649 Andreas NEY Andreas Ney 0000-0002-2388-6006 Andreas NEY Andreas Ney 0000-0002-2388-6006 Fabrice WILHELM Fabrice Wilhelm 0000-0002-4425-3662 Example Institute 2028 Data from large facility measurement 2025-04-15T14:00:00Z/2025-04-22T06:00:00Z 2025-04-22T06:00:00Z I CC-BY-4.0 It is the aim of the proposal to investigate the presence and strength of an induced magnetic polarization in Py/Pt spin pumping heterostructures (Py=permalloy, Ni80Fe20) at the Pt L-edges. We have experimental evidence from broadband (2 – 40 GHz) ferromagnetic resonance (FMR) experiments that the increase of the FMR linewidth broadening in Py/Pt spin pumping heterostructures can be gradually suppressed by inserting thin Al spacer layers. However, as pointed out before chemical intermixing going hand-in-hand with an induced magnetic polarization of the Pt is a common concern for these types of functional interfaces. Thus, the investigation of an induced polarization of the Pt by means of L-edge XMCD is the method of choice [1]. It is known that Pt in direct contact with Fe exhibits a clear induced polarization [1]. A decrease of the XMCD signal with increasing Al spacer thickness can allow to correlate induced polarization with increased spin pumping efficiency.