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Author Helgesen, G. ♦ Gibbs, D. ♦ Baddorf, A. P. ♦ Zehner, D. M. ♦ Mochrie, S. G. J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ COPPER ♦ ORDER-DISORDER TRANSFORMATIONS ♦ ROUGHNESS ♦ MONOCRYSTALS ♦ REFLECTIVITY ♦ TEMPERATURE DEPENDENCE ♦ TEMPERATURE RANGE 0273-0400 K ♦ TEMPERATURE RANGE 0400-1000 K ♦ TEMPERATURE RANGE 1000-4000 K ♦ X RADIATION ♦ CRYSTALS ♦ ELECTROMAGNETIC RADIATION ♦ ELEMENTS ♦ IONIZING RADIATIONS ♦ METALS ♦ OPTICAL PROPERTIES ♦ PHASE TRANSFORMATIONS ♦ PHYSICAL PROPERTIES ♦ RADIATIONS ♦ SURFACE PROPERTIES ♦ TEMPERATURE RANGE ♦ TRANSITION ELEMENTS ♦ Metals & Alloys- Structure & Phase Studies
Abstract The specular reflectivity from the (110) surface of a Cu single crystal has been measured for temperatures between 300 and 1100 K. At lower temperatures, the reflectivity is well described by a model which yields a contraction of the spacing between the first and the second surface layers by 8% relative to the bulk layer separation. The fits also show large surface-normal vibrational amplitudes within the first few atomic layers. The line shape of the scattering transverse to the specular direction has two components below 1000 K, and evolves with increasing temperature. However, our data do not preclude the existence of a surface-roughening transition.
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1993-11-15
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 48
Issue Number 20


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