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Berlin 2015 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 46: Magnetic Thin Films I

MA 46.1: Vortrag

Donnerstag, 19. März 2015, 15:00–15:15, H 1012

Microscopic analysis of the composition driven spin-reorientation transition in NixPd1−x/Cu(001) — •Daniel M. Gottlob1, Hatice Doğanay1, Florian Nickel1, Stefan Cramm1, Ingo P. Krug1,2, Slavomír Nemšák1, and Claus M. Schneider1,31Peter Grünberg Institut 6, Forschungszentrum Jülich, 52425 Jülich, Germany — 2Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany — 3Fakultät für Physik and Center for Nanointegration Duisburg-Essen (CeNIDE), Universität Duisburg-Essen, 47048 Duisburg, Germany

The composition driven spin-reorientation transition (SRT) has been investigated in the thin film system NixPd1−x/Cu(001) by photoemission microscopy (PEEM) utilizing the x-ray magnetic circular dichroisim (XMCD) effect at the Ni L2,3 edge. The magnetic domain structure and its development has been investigated on microwedges grown in the integrated preparation chamber by molecular beam epitaxy and characterized in-situ. By alloying palladium into nickel the epitaxial strain of a thin film may be varied and the critical film thickness at which an SRT occurs can be controlled. A composition driven SRT could be identified between 37 ML and 60 ML film thickness and 0 to 38 atomic % of Pd. The domain structure in the vicinity of the SRT shows comparable behavior to ultrathin film SRTs, however, additional influences of magnetic in-plane anisotropies could be observed, resulting in a domain alignment along the in-plane easy axis. The SRT is found to take place by a continuous canting of the magnetization axis.

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