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Dresden 2011 – scientific programme

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O: Fachverband Oberflächenphysik

O 44: Nanostructures at surfaces: Dots, particles, clusters, arrays III

O 44.1: Talk

Wednesday, March 16, 2011, 11:15–11:30, WIL C107

Ultra-high dense array of magnetic quantum dots on a GdAu2 template — •Laura Fernandez1, Alberto Cavallin2, Frederik Schiller3, Stefano Rusponi2, Martina Corso1, Maider Ormaza4, Harald Brune2, and Enrique Ortega1,3,41DIPC, San Sebastián, Spain — 2EPFL, Lausanne, Switzerland — 3CFM-CSIC, San Sebastián, Spain — 4UPV, San Sebastián, Spain

The growth of magnetic nanoparticles on surfaces by auto-organization processes represents a flexible and powerful alternative to obtain high-density, patterned magnetic storage media. Here, we report on the growth of a dense array of magnetic Co dots on a GdAu2 surface alloy. We show that this GdAu2 surface alloy behaves as an excellent template to achieve dot arrays with very high areal densities up to 54 Teradots/inch2. Magnetic properties were analyzed by UHV-MOKE and XMCD revealing in-plane remanent magnetization.

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