Berlin 2015 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 49: POSTER II

MA 49.17: Poster

Donnerstag, 19. März 2015, 15:00–18:00, Poster A

TMOKE study for characterizing magnetic properties of ferromagnetic thin films — •maryam youhannayee, aniela scheffzyk, adrian jaspers, and mathias getzlaff — Institut für Angewandte Physik, heinrich heine universität , düsseldorf, germany

Nowadays magneto optic Kerr effect (MOKE) is one of the standard tool for investigating magnetic properties of magnetic systems such as ferromagnetic thin films and nanoparticles. In this research, we have built up a set up to measure the transverse magneto optic Kerr effect (TMOKE) which results in a change of intensity of p-polarized laser beam after reflection from ferromagnetic ultrathin films. Lock-in technique have also been used in order to increase the signal-to-noise ratio . The measurements were carried out on Fe thin films with a thickness of 0.5 mm and Co with a thickness of 5 and 15 nm with a capping layer of Cr/Au and without coating. The thin films are prepared by electron beam evaporation on a GaAs crystal under ultra-high vacuum condition. Hysteresis loops show properties of Fe and Co like coercivity, remanence and saturation behavior.