Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 66: Poster 3
MA 66.1: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-OG2
Manipulation of AF-Coupled Thin Film Systems by Ion Beam Irradiation — •Leopold Koch1,2, Fabian Samad2, Benny Böhm2, Fabian Ganss2, Sri Sai Phani Kanth Arekapudi2, Miriam Lenz1, Sven Stienen1, and Olav Hellwig1,2 — 1Institut für Ionenstrahlphysik und Materialforschung, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany — 2Institut für Physik, Technische Universität Chemnitz, 09126 Chemnitz, Germany
The tuning of the magnetic properties of antiferromagnetically (AF) coupled multilayer films by ion beam irradiation has been investigated. Stacks of Co/Pd respectively Co/Pt multilayers, AF-coupled by Ru or Ir interlayers, have been useful for studying the energy contribution of interlayer exchange, perpendicular anisotropy and long range dipole interactions. The system shows a complex mixture of magnetic phases that can be tuned by the number of repeats of the multilayers (X). A lateral homogeneous AF remanent structure occurs for small X due to the dominance of the AF-coupling. For large X the demagnetisation energy prevails and ferromagnetic stripe domains evolve. With ion irradiation the balance of the energy contributions can be locally manipulated, thus a lateral heterogeneous structure of magnetic phases may be realised. Initial irradiation studies will be discussed.