The formation and characterisation of Ni3+ - an X-ray photoelectron spectroscopic investigation of potassium-doped Ni(110)-O

Authors
Carley, AF Jackson, SD O'Shea, JN Roberts, MW
Citation
Af. Carley et al., The formation and characterisation of Ni3+ - an X-ray photoelectron spectroscopic investigation of potassium-doped Ni(110)-O, SURF SCI, 440(3), 1999, pp. L868-L874
Citations number
22
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028 → ACNP
Volume
440
Issue
3
Year of publication
1999
Pages
L868 - L874
Database
ISI
SICI code
0039-6028(19991010)440:3<L868:TFACON>2.0.ZU;2-5
Abstract
The interaction of potassium with an oxidised Ni(110) single-crystal surfac e has been investigated using X-ray photoelectron spectroscopy (XPS). Incor poration of the alkali metal at room temperature results in suppression of the Ni(2p) satellite structure of NiO and is explained on the basis of a re cent theoretical model. Unambiguous evidence is provided for the formation of Ni3+ after annealing this surface, and at 600 K it is the majority speci es in the surface region. (C) 1999 Elsevier Science B.V. All rights reserve d.