THERMODYNAMICS AND KINETICS OF THE OXYGEN-EXCHANGE IN SINGLE CHAINS YBA2CU3O7-X(123) AND Y2BA4CU7O15-X(247) SUPERCONDUCTORS

Authors
CONDER K KRUGER C KARPINSKI J
Citation
K. Conder et al., THERMODYNAMICS AND KINETICS OF THE OXYGEN-EXCHANGE IN SINGLE CHAINS YBA2CU3O7-X(123) AND Y2BA4CU7O15-X(247) SUPERCONDUCTORS, Physica. C, Superconductivity, 282, 1997, pp. 527-528
Citations number
2
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
2
Pages
527 - 528
Database
ISI
SICI code
0921-4534(1997)282:<527:TAKOTO>2.0.ZU;2-N
Abstract
Thermodynamics of an oxygen exchange with oxygen atmosphere have been investigated by thermogravimetry in the pressure range of 0.0001 - 100 bar. A defect structure model was used to describe the thermodynamics of the oxygen nonstoichiometry. Chemical diffusion was directly measu red during a low temperature (<325 degrees C) oxidation of oxygen defi cient powder samples. A ''moving boundary'' model of the oxidation was assumed for the characterisation of the chemical diffusion of oxygen.