Reconstruction of the Pt(111) surface

Journal Article · Mon Apr 06 04:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.2192· OSTI ID:7111458

Sandy, A R; Mochrie, S G.J. ^[1]; Zehner, D M ^[2]; Gruebel, G; Huang, K G; Gibbs, D ^[3]

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1. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)
2. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6057 (United States)
3. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

The structure of the clean Pt(111) surface has been studied between 300 K and 0.92{ital T}{sub {ital m}} ({ital T}{sub {ital m}}=2045 K) via x-ray scattering. The surface is unreconstructed for temperatures less than 0.65{ital T}{sub {ital m}}, but reconstructs at higher temperatures to form a layer isotropically compressed and incommensurate with the underlying bulk (111) planes. A disordered arrangement of discommensurations separates regions with ideal fcc stacking from regions with faulted stacking. With increasing temperature, both the compression of the surface layer and the orientational order of the discommensurations increase.

• DOE Contract Number: AC05-84OR21400; AC02-76CH00016
• OSTI ID: 7111458
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:14; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
665000 -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COHERENT SCATTERING
COMPRESSION
CRYSTAL STRUCTURE
DEFECTS
DIFFRACTION
ELEMENTS
METALS
MORPHOLOGY
PHASE TRANSFORMATIONS
PLATINUM
PLATINUM METALS
SCATTERING
STRESSES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
X-RAY DIFFRACTION