Surface electrical properties of (La,Sr)(Co,Fe,Mn)O-3

Authors
Bak, T Nowotny, J Rekas, M Sorrell, CC Vance, ER
Citation
T. Bak et al., Surface electrical properties of (La,Sr)(Co,Fe,Mn)O-3, SOL ST ION, 135(1-4), 2000, pp. 563-565
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
135
Issue
1-4
Year of publication
2000
Pages
563 - 565
Database
ISI
SICI code
0167-2738(200011)135:1-4<563:SEPO(>2.0.ZU;2-U
Abstract
The effect of p(O2) change on work function (WF) of oxide electrode materia ls, such as (La,Sr)(Mn,Co)O-3 and (La,Sr)(Mn,Fe)O-3, was determined at 1073 K during oxidation and reduction. Oxidation of both LSM and LSC results in WF changes that are rate controlled by oxygen chemisorption. Replacement o f Mn with Fe in LSM, results in a decrease of the chemisorption-related sur face barrier to a negligible level. (C) 2000 Elsevier Science B.V. All righ ts reserved.