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Oxygen Absorption and Structural Transition in a Model YBa2 Cu3 O7-y

Published online by Cambridge University Press:  28 February 2011

C. Varea  and
A. Robledo
C. Varea
Affiliation:
Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Mexico 04510 D.F., Mexico.
A. Robledo
Affiliation:
Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apdo. 20–364, Mexico OlOOO D.F., Mexico.
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Abstract

We describe the properties of a model for the absorption of oxygen in the basal planes of YBa2 Cu3 O7-y. The model consists of a layered oxygen lattice gas in equilibrium with an external source of O2 wherethe Cu-mediated oxygen-oxygen interactions are coupled to the elastic energy of the crystal. Our predictions for the dependence of oxygen-ordering, and unit cell dimensions with temperature and oxygen partial pressure are in quantitative agreement with experiment.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 527
Copyright
Copyright © Materials Research Society 1988

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References

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