Theory of oxygen diffusion in the YBa2Cu3O7−x superconducting compound
Jae-Sung Choi, Mehmet Sarikaya, Ilhan A. Aksay, Ryoichi Kikuchi
DOI 10.1103/PhysRevB.42.4244 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
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 pair’s 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Oxygen-vacancy ordering in the Ba2YCu3O7−x (0≤x≤1) superconducting system
similarity 0.96C. Chaillout et al.
Source status unknown — claims are unverified
Model for the role of oxygen defects in oxygen-defect superconductors
similarity 0.95J. W. Halley & Herbert B. Shore
Source status unknown — claims are unverified
Microstructure, lattice parameters, and superconductivity of YBa2(Cu1−xFex)3O7−δ for 0≤x≤0.33
similarity 0.95Youwen Xu et al.
Source status unknown — claims are unverified
Long-range Coulomb interactions and the onset of superconductivity in the high-Tc materials
similarity 0.95S. Doniach & M. Inui
Source status unknown — claims are unverified
Fluctuations of vortices in layered high-Tc superconductors
similarity 0.95L. N. Bulaevskii et al.
Source status unknown — claims are unverified
Critical Dynamics of Superconductors in the Charged Regime
similarity 0.95Courtney Lannert et al.
Source status unknown — claims are unverified