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Berlin 2018 – scientific programme

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MA: Fachverband Magnetismus

MA 21: Poster I

MA 21.13: Poster

Tuesday, March 13, 2018, 09:30–13:00, Poster A

X-ray magnetic linear dichroism as a probe for non-collinear magnetic state — •Chen Luo1,2 and Florin Radu21Department of Physics, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany — 2Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein Str. 15, 12489, Berlin, Germany

We report on exploiting the X-ray magnetic linear dichroism (XMLD) contrast for probing the non-collinear states in DyCo5 ferrimagnetic thin film. From the X-ray magnetic circular dichroism measurements, an anomalous ’wing shape’ hysteresis loop is observed slightly above its compensation temperature. This bear the chracterisitcs of an intrinsic exchange bias effect, referred to as atomic exchange bias. This effect is assumed to be mediated by the formation of an the out-of-plane domain wall formation from the surface towards the bulk. By taking advantage of the strong linear dichroism of the Dy element at the M5 absorption edge, the formation of domain walls during the hysteresis measurements is directly observed via XMLD measurements.

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