Dresden 2009 – wissenschaftliches Programm
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SYSO: Symposium Self-organizing Surfaces and Interfaces
SYSO 6: Self-Organizing Surfaces and Interfaces V
SYSO 6.3: Vortrag
Donnerstag, 26. März 2009, 14:30–14:45, GÖR 226
Self-assembled growth of magnetic antidot arrays — •Kai Schlage1, Sebastien Couet1, Stephan V. Roth1, Ulla Vainio1, Mottakin Abul Kashem2, Peter Müller-Buschbaum2, Rudolf Rüffer3, and Ralf Röhlsberger1 — 1HASYLAB at DESY, Notkestr. 85, D-22607 Hamburg, Germany — 2TU München, Physik-Department, Lehrstuhl E13, James Frank-Str. 1, D-85747 Garching, Germany — 3ESRF, BP 220, 38043 Grenoble, France
The self-assembled growth of magnetic nanostructures onto highly ordered (polymer) templates offers an elegant way to create magnetic nanostructures with a small variation in size and hence with well defined magnetic properties. Unfortunately, experimental methods are rare which allow to correlate the growth dynamics of the self-assembled nanostructures in-situ with its chemical and magnetic properties. In this contribution we present for the first time a combined grazing incidence small angle scattering (GISAXS) and nuclear forward scattering (NFS) study which offers the structural, chemical and magnetic sensitivity during such an in-situ deposition experiment. Iron is sputter deposited onto a diblock copolymer template which exhibits a surface morphology consisting of an ordered array of deep holes to create a magnetic antidot array. The experiemntal techniques combined here reveal the process of self-assembly of the deposited iron atoms with highest resolution in space, their chemical interaction with the polymer template (formation of oxide) and a remarkable onset of magnetic ordering compared to the growth of compact magnetic iron thin films.