Issue |
Europhys. Lett.
Volume 58, Number 5, June 2002
|
|
---|---|---|
Page(s) | 737 - 743 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2002-00411-9 | |
Published online | 01 May 2002 |
X-ray study of the structure and order in lithographic Cu3Au nano-cuboids
1
Max-Planck Institut für Metallforschung -
D-70569 Stuttgart, Germany and Universität Stuttgart, Institut für
Theoretische und Angewandte Physik D-70569 Stuttgart, Germany
2
Institut für Festkörper- und Werkstofforschung -
D-01069 Dresden, Germany
3
Laboratoire de Physique
des Solides, Université Paris Sud 91405 Orsay, France
Received:
21
December
2001
Accepted:
6
March
2002
We present a structural and thermodynamic study of lithographically
produced Cu3Au nano-structures on a sample which contained both
an array of periodically arranged nano-cuboids with a size of
nm3 and a closed thin film. It is shown that the
coherence features of the X-ray beam and the periodical arrangement of
the nano-structures give rise to an unusual interference pattern which
is exploited as a control tool for the sample quality during the
experiment. With this in hand, the L12-A2 phase transformation
in the nano-structures is investigated together with the behaviour of
the thin film which can be compared in situ. The temperature-dependent study at this order-disorder phase transformation yields a
remarkable difference in the transition temperature Tc, where Tc
of the nano-cuboids is about 200 K lower than in the closed film.
PACS: 68.35.Rh – Phase transitions and critical phenomena / 68.65.-k – Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties / 61.10.Eq – X-ray scattering (including small-angle scattering)
© EDP Sciences, 2002
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