Oxygen diffusion in 123-YBCO

  • Marcel Ausloos
  • Andrzej Pękalski
Invited Lectures
Part of the Lecture Notes in Physics book series (LNP, volume 438)


The problem of oxygen diffusion in 123-YBCO is discussed. We briefly recall the type of experiments, their results and theoretical interpretations. We observe the large spread of data values. The tracer diffusion coefficient interpretation is based on the ASYmmetric Next Nearest Neighbor Ising model and its phase diagram. Inclusion of oxygen-vacancy next nearest neighbor (NNN) hopping in the basal planes of YBCO leads to reconciling experimental data and theory. We also observe that the newly found V-Λ transition in the tracer diffusion coefficient at low temperature can be a source of interesting effects including the mark of superconductivity onset.


Oxygen Diffusion Next Near Neighbor Chemical Potential Gradient Chemical Diffusion Coefficient Tracer Diffusion Coefficient 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • Marcel Ausloos
    • 1
  • Andrzej Pękalski
    • 2
  1. 1.SUPRAS, Institute of Physics B5University of LiègeLiègeBelgium
  2. 2.Institute of Theoretical PhysicsUniversity of WroclawWroclawPoland

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