Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 62: Magnetic Imaging (Experimental Techniques)
MA 62.7: Vortrag
Freitag, 24. März 2017, 11:15–11:30, HSZ 403
Deconvolution of distinct magnetooptical response of Ru/permalloy/Ta thin film stacks in recognition of different underlying substrates — •Rajkumar Patra1, Danilo Bürger1, Roland Mattheis2, Hartmut Stöcker3, Manuel Monecke4, Georgeta Salvan4, Stefan Pofahl5, Rudolf Schäfer5, Oliver G. Schmidt1,6, and Heidemarie Schmidt1 — 1Material Systems for Nanoelectronics, TU Chemnitz, 09107, Germany — 2Leibniz Institute for Photonic Technology IPHT, Jena, Germany — 3Institute of Experimental Physics, TU Bergakademie Freiberg, 09596, Germany — 4Semiconductor Physics, TU Chemnitz, 09107, Germany — 5Institute for Metallic Materials, IFW Dresden, 01069, Germany — 6Institute for Integrative Nanosciences, IFW Dresden, 01069, Germany
The magnetooptical (MO) response of permalloy (Py) films on a SiO2/Si and a ZnO substrate was studied using VMOGE [1] in a wavelength range from 300 nm to 1000 nm. Textured growth of the Py films was confirmed by GAXRD. Thickness independent MO conductivity matrix of Py films in the Ru/Py/Ta thin film stacks was modeled [2] and found to be independent of the underlying substrate. Features in the modeled off-diagonal elements of MO conductivity matrix of Py are related with electronic interband transitions between the d-bands from individual Ni and Fe. Magnetic domains have been observed by Kerr microscopy up to a 10 mT out-of- plane magnetic field and are related with corresponding out-of- plane SQUID-VSM magnetometry.
[1] K. Mok et al. Rev. Sci. Instr. 82 (2011) 033112. [2] K. Mok et al. J. Appl. Phys. 110 (2011) 123110; Phys. Rev. B 84 (2011) 094413.