Observation and interpretation of a partial Gd twisted spin state in an epitaxial Gd/Fe bilayerстатья
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Аннотация:The interfacial coupling between Gd(0001) and Fe(110) in an epitaxial Gd/Fe bilayer has been studied by means of magnetometry and polarized neutron reflectivity with spin analysis. The results are interpreted in terms of a Gd twisted spin state in low applied fields. This original magnetic configuration was examined by theoretical calculations and found to be due to competing Gd-Gd and Gd-Fe exchange interactions with the Gd-Fe exchange interactions being long ranged and oscillatory.