Dresden 2011 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

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

O 44.1: Vortrag

Mittwoch, 16. März 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 Ortega^1,3,4 — ¹DIPC, 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.