Regensburg 2016 – scientific programme

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MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.67: Poster

Tuesday, March 8, 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 Wende¹ — ¹Faculty 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)