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M: Metallphysik
M 28: Nanoskalige Materialien II
M 28.2: Fachvortrag
Thursday, March 29, 2001, 12:00–12:15, S5.3
Structural and Thermodynamic Investigations of Cu3Au-Nano-Cuboids — •T. Schülli1, J. Trenkler1, I. Mönch2, D. Le Bolloc’h3, and H. Dosch1 — 1Max-Planck-Institut für Metallforschung, Heisenbergstr. 1, 70569 Stuttgart — 2Institut für Festkörper- und Werkstofforschung, Helmholtzstr. 20, 01069 Dresden — 3European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
The understanding of the influence of nano-structuring on the thermodynamic properties of an epitaxially grown thin film is of crucial importance for the study of nano-thermodynamics. In this talk, we introduce a structural and thermodynamic study of well-defined 200x200x13 nm3 large Cu3Au nano-cuboids fabricated by electron beam lithographic methods. Via our partial coherence model and a sample design containing both a closed thin film and periodically arranged nano-cuboids, we are able to in-situ study their properties at the order-disorder phase transformation when using coherent x-ray diffraction. The experiments yielded a phase transformation temperature of the nano-cuboids by more than 200 K lower than in the thin film.