High coverages of oxygen on Cu(110) investigated with XPS, LEED, and HREELS

A. P. Baddorf; J. F. Wendelken

doi:10.1016/0039-6028(91)90869-T

High coverages of oxygen on Cu(110) investigated with XPS, LEED, and HREELS

A. P. Baddorf, J. F. Wendelken

Scanning Tunneling Microscopy Group

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

Oxygen sites and coverages involved in the oxidation of Cu(110) have been investigated using HREELS, XPS and LEED. High coverages of atomic oxygen were formed using low exposures of O₂ by adsorbing at 15-20 K, irradiating with X-rays, and subsequently warming the crystal to 300 K. Coverages were determined from O 1s areas in XPS. HREELS measurements disclose three surface sites and one subsurface site during the initial oxidation process. Long-bridge and tilted 3- or 4-coordinated sites are occupied before oxygen moves below the surface to form Cu₂O. Oxide growth proceeds in islands. After the oxide appears, a third surface site is occupied when O atoms are insufficiently mobile to enter bulk sites. Only p(2 × 1) and c(6 × 2) long-range structures are observed with LEED.

Original language	English
Pages (from-to)	264-271
Number of pages	8
Journal	Surface Science
Volume	256
Issue number	3
DOIs	https://doi.org/10.1016/0039-6028(91)90869-T
State	Published - Oct 2 1991

Funding

We appreciate stimulating discussions with David Zehner and Greg Gruzalski. This research is sponsored by the Division of Materials Sciences, US Department of Energy under contract DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc.

Funders	Funder number
Division of Materials Sciences
U.S. Department of Energy	DE-AC05-840R21400

Access to Document

10.1016/0039-6028(91)90869-T

Cite this

@article{b6e4ad86c6f64af885c940227a3b4b45,

title = "High coverages of oxygen on Cu(110) investigated with XPS, LEED, and HREELS",

abstract = "Oxygen sites and coverages involved in the oxidation of Cu(110) have been investigated using HREELS, XPS and LEED. High coverages of atomic oxygen were formed using low exposures of O2 by adsorbing at 15-20 K, irradiating with X-rays, and subsequently warming the crystal to 300 K. Coverages were determined from O 1s areas in XPS. HREELS measurements disclose three surface sites and one subsurface site during the initial oxidation process. Long-bridge and tilted 3- or 4-coordinated sites are occupied before oxygen moves below the surface to form Cu2O. Oxide growth proceeds in islands. After the oxide appears, a third surface site is occupied when O atoms are insufficiently mobile to enter bulk sites. Only p(2 × 1) and c(6 × 2) long-range structures are observed with LEED.",

author = "Baddorf, {A. P.} and Wendelken, {J. F.}",

year = "1991",

month = oct,

day = "2",

doi = "10.1016/0039-6028(91)90869-T",

language = "English",

volume = "256",

pages = "264--271",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - High coverages of oxygen on Cu(110) investigated with XPS, LEED, and HREELS

AU - Baddorf, A. P.

AU - Wendelken, J. F.

PY - 1991/10/2

Y1 - 1991/10/2

N2 - Oxygen sites and coverages involved in the oxidation of Cu(110) have been investigated using HREELS, XPS and LEED. High coverages of atomic oxygen were formed using low exposures of O2 by adsorbing at 15-20 K, irradiating with X-rays, and subsequently warming the crystal to 300 K. Coverages were determined from O 1s areas in XPS. HREELS measurements disclose three surface sites and one subsurface site during the initial oxidation process. Long-bridge and tilted 3- or 4-coordinated sites are occupied before oxygen moves below the surface to form Cu2O. Oxide growth proceeds in islands. After the oxide appears, a third surface site is occupied when O atoms are insufficiently mobile to enter bulk sites. Only p(2 × 1) and c(6 × 2) long-range structures are observed with LEED.

AB - Oxygen sites and coverages involved in the oxidation of Cu(110) have been investigated using HREELS, XPS and LEED. High coverages of atomic oxygen were formed using low exposures of O2 by adsorbing at 15-20 K, irradiating with X-rays, and subsequently warming the crystal to 300 K. Coverages were determined from O 1s areas in XPS. HREELS measurements disclose three surface sites and one subsurface site during the initial oxidation process. Long-bridge and tilted 3- or 4-coordinated sites are occupied before oxygen moves below the surface to form Cu2O. Oxide growth proceeds in islands. After the oxide appears, a third surface site is occupied when O atoms are insufficiently mobile to enter bulk sites. Only p(2 × 1) and c(6 × 2) long-range structures are observed with LEED.

UR - http://www.scopus.com/inward/record.url?scp=0026244364&partnerID=8YFLogxK

U2 - 10.1016/0039-6028(91)90869-T

DO - 10.1016/0039-6028(91)90869-T

M3 - Article

AN - SCOPUS:0026244364

SN - 0039-6028

VL - 256

SP - 264

EP - 271

JO - Surface Science

JF - Surface Science

IS - 3

ER -

High coverages of oxygen on Cu(110) investigated with XPS, LEED, and HREELS

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this