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Evidence for a cubic-to-icosahedral transition of quasi-free Pd-H-clusters controlled by the hydrogen content On the phase transitions in Pd-H-clusters
被引：0
作者：
A. Pundt
M. Dornheim
M. Guerdane
H. Teichler
H. Ehrenberg
M.T. Reetz
N.M. Jisrawi
机构：
[1] Institute of Materials Physis,
[2] University of Göttingen,undefined
[3] 37073 Göttingen,undefined
[4] Germany,undefined
[5] Darmstadt University of Technology,undefined
[6] Institute of Materials Science,undefined
[7] 64287 Darmstadt,undefined
[8] Germany,undefined
[9] Max-Planck-Institut für Kohlenforschung,undefined
[10] 45470 Mühlheim,undefined
[11] Germany,undefined
[12] Department of Physics,undefined
[13] Birzeit University,undefined
[14] P.O. Box 14,undefined
[15] Birzeit,undefined
[16] Palestine,undefined
来源：
The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
|
2002年
/
19卷
关键词：
PACS. 64.70.Nd Structural transitions in nanoscale materials – 61.46.+w Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals – 68.65.-k Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties;
D O I：
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摘要：
An in situ synchrotron radiation study of quasi-free five nanometer-sized palladium clusters during hydrogen absorption is combined with molecular dynamics simulations to investigate the structural development. In the diffraction patterns, strong intensity changes are found that provide evidence for a structural phase transformation that is significantly different from the α-\documentclass[12pt]{minimal}
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\begin{document}\end{document}-Pd-H bulk phase transition. The structural transition is reversible and driven by the hydrogen concentration. The intensity changes are consistent with a cubic-to-icosahedral structural phase transition obtained in molecular dynamical simulations using embedded-atom-method potentials.
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页码：333 / 337
页数：4
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