Regensburg 2013 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 24: Magnetic Imaging and Scattering Techniques
MA 24.6: Vortrag
Mittwoch, 13. März 2013, 10:45–11:00, H22
Magnetic dichroism in angle-resolved hard x-ray photoemission from amorphous Gd-Fe films — •Hans-Joachim Elmers1, Andrei Gloskovskii2, Gerd Schönhense1, Alisa Chernenkaya1, Katerina Medjanik1, Mirko Emmel1, and Gerhard Jakob1 — 1Institut für Physik, Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany — 2Deutsches Elektronen-Synchrotron, Experimental Physics and Materials Science, Germany
The bulk sensitivity of hard x-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation of the P09 beamline at PETRA III enables the investigation of the magnetic properties of capped films. We have determined the temperature dependence of the magnetic dichroism in the Fe 2p and in the Gd 3d states in amorphous Gd-Fe films. The magnetic dichroism reflects the stronger temperature dependence of Gd moments compared to Fe moments according to atomistic models. We resolved the exchange splitted Gd 3d5/2 sub states and found a significant temperature dependence of the splitting which is attributed to a temperature dependent exchange energy. Funded by COMATT.