STUDY OF THE OXYGEN-EXCHANGE PROCESS IN LA-SR-CU-O FILMS AT OXIDATION-REDUCTION SURFACE-REACTIONS

Authors
VARLAMOV YD BOBRENOK OF PREDTECHENSKY MR
Citation
Yd. Varlamov et al., STUDY OF THE OXYGEN-EXCHANGE PROCESS IN LA-SR-CU-O FILMS AT OXIDATION-REDUCTION SURFACE-REACTIONS, Sensors and actuators. B, Chemical, 31(1-2), 1996, pp. 119-122
Citations number
9
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
31
Issue
1-2
Year of publication
1996
Pages
119 - 122
Database
ISI
SICI code
0925-4005(1996)31:1-2<119:SOTOPI>2.0.ZU;2-G
Abstract
The mechanism of gas sensing of metal oxides containing oxygen atoms i n the weakly bonding states has been investigated using La-Sr-Cu-O epi taxial films as a model material. The in situ kinetic measurements of film conductivity to monitor the diffusion of oxygen in and out of fil ms at annealing in the different gas ambient conditions were used. It has been shown that the gas sensing properties of oxide are due to the reversible change of oxygen stoichiometry. The rate-determining steps of oxygen exchange processes in the film have been separated.