Enhancement of oxygen surface exchange kinetics of SrTiO(3) by alkaline earth metal oxides.
The oxygen incorporation reaction in undoped SrTiO(3) was investigated by electrical measurements (pressure modulation technique) in the temperature range from 650-920 degrees C and by means of tracer exchange experiments in the temperature range from 458-600 degrees C. The surface of the undoped SrTiO(3) single crystals was modified by alkaline earth metal compounds leading to a tremendous enhancement of the effective surface exchange rate for oxygen incorporation as compared to the uncoated surface.
Argirusis
Christos
C
TU Clausthal, Institut für Metallurgie, Robert-Koch-Str. 42, 38678, Clausthal-Zell., Germany. christos.argirusis@tu-clausthal.de.
Wagner
Stefan
S
Menesklou
Wolfgang
W
Warnke
Carsten
C
Damjanovic
Tanja
T
Borchardt
Günter
G
Ivers-Tiffée
Ellen
E
D007700:Kinetics; D008673:Metals, Alkaline Earth / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010103:Oxygen Isotopes / Q000737:chemistry; D013324:Strontium / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
D008673:Metals, Alkaline Earth; D010087:Oxides; D010103:Oxygen Isotopes; D014025:Titanium; C119252:strontium titanium oxide; D010100:Oxygen; D013324:Strontium