Orientational epitaxy of the hexagonally reconstructed Pt(001) surface

X-ray scattering studies of the orientational epitaxy displayed by the hexagonally reconstructed Pt(001) surface are described. At 1685K, the reconstructed surface layer undergoes a continuous rotational transformation with respect to the underlying bulk and exhibits mean-field behavior. A second, d...

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Bibliographic Details
Published in:Physical review letters 1991-11, Vol.67 (22), p.3117-3120
Main Authors: DOON GIBBS, GRÜBEL, G, ZEHNER, D. M, ABERNATHY, D. L, MOCHRIE, S. G. J
Format: Article
Language:English
Subjects:
360102 - Metals & Alloys- Structure & Phase Studies
COHERENT SCATTERING
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
DOMAIN STRUCTURE
ELEMENTS
EPITAXY
Exact sciences and technology
HIGH TEMPERATURE
INTERFACES
MATERIALS SCIENCE
MEAN-FIELD THEORY
METALS
PHASE TRANSFORMATIONS
Physics
PLATINUM
PLATINUM METALS
SCATTERING
Statistical physics, thermodynamics, and nonlinear dynamical systems
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
Thermodynamics
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION
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Description
Summary:X-ray scattering studies of the orientational epitaxy displayed by the hexagonally reconstructed Pt(001) surface are described. At 1685K, the reconstructed surface layer undergoes a continuous rotational transformation with respect to the underlying bulk and exhibits mean-field behavior. A second, discontinuous rotational transformation is observed at 1580K. These results are inconsistent with the predictions of current theories and lead to a mean-field description of rotational transformations.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.67.3117