Composition and structure of Cu3Pt(001): A (1 × 1) Cu termination with c(2 × 2) underlayer ordering

Y. G. Shen; D. J. O'Connor; K. Wandelt

doi:10.1016/S0039-6028(97)01033-9

Composition and structure of Cu3Pt(001): A (1 × 1) Cu termination with c(2 × 2) underlayer ordering

Y. G. Shen
, D. J. O'Connor
, K. Wandelt

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

22 Citations (Scopus)

Abstract

The composition and structure of the (001) oriented surface of the ordered alloy Cu₃Pt were investigated by low-energy Li⁺ and He⁺ ion scattering, and low-energy electron diffraction. The clean and well-annealed surface exhibited a c(2 × 2) LEED pattern. We present evidence that the c(2 × 2) structure corresponds to an ordered c(2 × 2) Cu-Pt second layer below a (1 × 1) Cu termination. Using Li⁺ ions, from analysis of the Cu and Pt critical shadowing edges, the first interlayer spacing was determined to be contracted by about 3%. The results are discussed on the basis of surface segregation and ordering effects. © 1998 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	23-31
Journal	Surface Science
Volume	406
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(97)01033-9
Publication status	Published - 31 May 1998
Externally published	Yes

Research Keywords

Alloys
Copper
Low energy ion scattering
Low index single crystal surfaces
Platinum
Surface segregation
Surface structure, morphology, roughness, and topography

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10.1016/S0039-6028(97)01033-9

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title = "Composition and structure of Cu3Pt(001): A (1 × 1) Cu termination with c(2 × 2) underlayer ordering",

abstract = "The composition and structure of the (001) oriented surface of the ordered alloy Cu3Pt were investigated by low-energy Li+ and He+ ion scattering, and low-energy electron diffraction. The clean and well-annealed surface exhibited a c(2 × 2) LEED pattern. We present evidence that the c(2 × 2) structure corresponds to an ordered c(2 × 2) Cu-Pt second layer below a (1 × 1) Cu termination. Using Li+ ions, from analysis of the Cu and Pt critical shadowing edges, the first interlayer spacing was determined to be contracted by about 3\%. The results are discussed on the basis of surface segregation and ordering effects. {\textcopyright} 1998 Elsevier Science B.V. All rights reserved.",

keywords = "Alloys, Copper, Low energy ion scattering, Low index single crystal surfaces, Platinum, Surface segregation, Surface structure, morphology, roughness, and topography",

author = "Shen, \{Y. G.\} and O'Connor, \{D. J.\} and K. Wandelt",

year = "1998",

month = may,

day = "31",

doi = "10.1016/S0039-6028(97)01033-9",

language = "English",

volume = "406",

pages = "23--31",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

number = "1-3",

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TY - JOUR

T1 - Composition and structure of Cu3Pt(001)

T2 - A (1 × 1) Cu termination with c(2 × 2) underlayer ordering

AU - Shen, Y. G.

AU - O'Connor, D. J.

AU - Wandelt, K.

PY - 1998/5/31

Y1 - 1998/5/31

N2 - The composition and structure of the (001) oriented surface of the ordered alloy Cu3Pt were investigated by low-energy Li+ and He+ ion scattering, and low-energy electron diffraction. The clean and well-annealed surface exhibited a c(2 × 2) LEED pattern. We present evidence that the c(2 × 2) structure corresponds to an ordered c(2 × 2) Cu-Pt second layer below a (1 × 1) Cu termination. Using Li+ ions, from analysis of the Cu and Pt critical shadowing edges, the first interlayer spacing was determined to be contracted by about 3%. The results are discussed on the basis of surface segregation and ordering effects. © 1998 Elsevier Science B.V. All rights reserved.

AB - The composition and structure of the (001) oriented surface of the ordered alloy Cu3Pt were investigated by low-energy Li+ and He+ ion scattering, and low-energy electron diffraction. The clean and well-annealed surface exhibited a c(2 × 2) LEED pattern. We present evidence that the c(2 × 2) structure corresponds to an ordered c(2 × 2) Cu-Pt second layer below a (1 × 1) Cu termination. Using Li+ ions, from analysis of the Cu and Pt critical shadowing edges, the first interlayer spacing was determined to be contracted by about 3%. The results are discussed on the basis of surface segregation and ordering effects. © 1998 Elsevier Science B.V. All rights reserved.

KW - Alloys

KW - Copper

KW - Low energy ion scattering

KW - Low index single crystal surfaces

KW - Platinum

KW - Surface segregation

KW - Surface structure, morphology, roughness, and topography

UR - https://www.scopus.com/pages/publications/0032074489

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0032074489&origin=recordpage

U2 - 10.1016/S0039-6028(97)01033-9

DO - 10.1016/S0039-6028(97)01033-9

M3 - RGC 21 - Publication in refereed journal

SN - 0039-6028

VL - 406

SP - 23

EP - 31

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Composition and structure of Cu3Pt(001): A (1 × 1) Cu termination with c(2 × 2) underlayer ordering

Abstract

Research Keywords

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