Regensburg 2016 – scientific programme

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O: Fachverband Oberflächenphysik

O 71: Scanning Probe Techniques and New Experimental Methods

O 71.19: Poster

Wednesday, March 9, 2016, 18:15–20:30, Poster A

MOKE UHV-Setup — •Vivienne Bippus, Christian Klump, Sani Noor, Christian Urban, and Ulrich Köhler — Experimentalphysik IV, Arbeitsgruppe Oberflächenphysik, Ruhr-Universität Bochum, Germany

We present a UHV-setup for measuring the magneto-optic Kerr-effect (MOKE) at variable temperatures. The setup is integrated with a number of metal and semiconductor MBE-sources pointing at the sample in the MOKE position. Therefore, in situ MOKE measurements can be carried out simultaneously during the growth process of the sample. The data acquisition software is able to record the temporal evolution of magnetic hysteresis curves. A cryostat fitted with the sample holder offers substrate temperatures down to 4.2 K. Hence, temperature, layer thickness and crystal orientation dependent measurements with a resolution of a mono-layer are possible. The poster will present details on the structure and the control of the different components used, together with examples of the coverage dependent magnetic behaviour of ferromagnetic layers on semiconductors.