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Titolo:
PHASE-BEHAVIOR OF AU AND PT SURFACES
Autore:
GRUBEL G; GIBBS D; ZEHNER DM; ABERNATHY DL; SANDY AR; MOCHRIE SGJ;
Indirizzi:
EUROPEAN SYNCHROTRON RADIAT FACIL,DIV EXPT,BP 220 F-38043 GRENOBLE FRANCE RISO NATL LAB,DEPT PHYS DK-4000 ROSKILDE DENMARK OAK RIDGE NATL LAB,DIV SOLID STATE OAK RIDGE TN 37831 MIT,DEPT PHYS CAMBRIDGE MA 02139 BROOKHAVEN NATL LAB,DEPT PHYS UPTON NY 11973
Titolo Testata:
Surface science
, volume: 287, anno: 1993,
parte:, B
pagine: 842 - 846
SICI:
0039-6028(1993)287:<842:POAAPS>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAY-SCATTERING MEASUREMENTS; AU(001) SURFACE; ORIENTATIONAL EPITAXY; AU(111) SURFACE; STRESS TENSOR; RECONSTRUCTIONS; MONOLAYERS; TRANSITION; PLATINUM; GRAPHITE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
G. Grubel et al., "PHASE-BEHAVIOR OF AU AND PT SURFACES", Surface science, 287, 1993, pp. 842-846

Abstract

We summarize the results of X-ray scattering studies of the Au(001) and Pt(001) surfaces between 300 K and their respective bulk melting temperatures (T(m)). Both surfaces exhibit three distinct structural phases. At high temperatures (0.88T(m) < T < T(m)) both surfaces are disordered. The Pt(001) surface is rough. At a temperature of T/T(m) almost-equal-to 0.88 there are reversible phase transformations to incommensurate, corrugated-hexagonal phases. Below T/T(m) almost-equal-to 0.8 hexagonal domains rotate with respect to the substrate orientation. InPt, the rotational transformation is continuous and shows mean-field behavior. In Au, the rotational transformation is mainly discontinuous.

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Documento generato il 21/09/20 alle ore 12:38:24