Theory of oxygen diffusion in the YBa2Cu3O7-x superconducting compound

Jae Sung Choi, Mehmet Sarikaya, Ilhan A. Aksay, Ryoichi Kikuchi

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Oxygen diffusion coefficients in the YBa2Cu3O7-x superconducting compound are calculated by employing the pair approximation of the path probability method. The results show that the diffusion of oxygen in this compound is significantly dependent on the oxygen density and the degree of long-range order. It was found that the oxygen diffusion rate in the tetragonal phase is faster than that in the orthorhombic phase, with activation energies for diffusion of 0.8 and 1.2 eV, respectively, with the rate changing abruptly when the phase transformation takes place. We discuss the relationship between oxygen diffusion and each pair probability in connection with each pairs interaction energy values. The kinetics of oxygen diffusion obtained from the present model is discussed in the context of experimental values in the literature and with respect to twin boundary diffusion.

Original languageEnglish (US)
Pages (from-to)4244-4254
Number of pages11
JournalPhysical Review B
Volume42
Issue number7
DOIs
StatePublished - Jan 1 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Theory of oxygen diffusion in the YBa2Cu3O7-x superconducting compound'. Together they form a unique fingerprint.

Cite this