Regensburg 2016 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.67: Poster

Dienstag, 8. März 2016, 09:30–12:30, Poster B1

Growth & structural characterization of magnetically coupled trilayer systems Fe/x/Gd (x=Mn,Sc) — •Samira Webers1, P. Anil Kumar1, Dirk Walecki1, Biplab Sanyal2, Carmine Autieri2, Mark Gubbins3, and Heiko Wende11Faculty of Physics and Center of Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Germany — 2Department of Physics and Astronomy, Uppsala University, Sweden — 3Seagate, Northern Ireland

As predicted by theory, we show that it is possible to produce ferromagnetically coupled layers of Fe and Gd via an antiferromagnetic or non-magnetic intermediate layer like Sc or Mn. These studies build on our earlier investigation of the Fe/Cr/Gd system [1]. We are able to grow these trilayer systems by molecular beam epitaxy on GaAs(100) substrates. It has been found that by modification of the spacer layer thickness, we obtain a larger net magnetic moment for this system. As determined by magnetometry measurements, it is necessary to grow flat and well defined monolayers. For this reason, the growth charaterization is crucial. We use in situ Reflection High Energy Electron Diffraction to investigate the layer growth and to crosscheck the thickness calibration.

[1] F. Stromberg et al., Textured growth of the high moment material Gd(0001)/ Cr(001)/ Fe(001), J. Phys D: Appl. Phys. 44, 265004 (2011)

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