Dresden 2020 – scientific programme

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MA: Fachverband Magnetismus

MA 57: Posters Magnetism II

MA 57.46: Poster

Thursday, March 19, 2020, 15:00–18:00, P3

Automated evaluation of EMCD measurements — •Chris Taake, Inga Ennen, Daniela Ramermann, and Andreas Hütten — Thin Films & Physics of Nanostructures, University of Bielefeld, Bielefeld, Germany

To measure the magnetic properties of a sample at high resolution the electron magnetic circular dichroism (EMCD) has become apparent to be a good method. One big problem in evaluating EMCD measurements is, that the outcome is highly dependent on the parameters chosen for the evaluation. Combined with the limited setting options in common software this makes reproducibility almost impossible. Here we programmed a matlab based software to automate the evaluation process and make it as independent of user inputs as possible. The algorithm can operate on the basis of a spectrum image or two spectra obtained on the EMCD positions and returns the ratio between the spin and orbital magnetic moment. The calculation of the single magnetic moments is not yet provided, but can easily be added in the future by expanding the material library with the necessary values.