Abstract
The ionic conductivity of oxygen was studied in the dense ceramic YBa 2Cu 3O 6+ x using the oxygen permeation measurements. The temperature interval of measurements was 600–850°C and the limits of the partial pressure of oxygen were 0.06-1.00 atm. The method was based on the direct determination of the steady flow of oxygen through the specimen in the conditions of constant temperature with a small gradient of oxygen chemical potential along the sample. The oxygen diffusion coefficient was calculated. The activation energy ( U) of the oxygen conductivity (diffusion coefficient) was determined in the interval 0.35< x<0.6. The dependence of the activation energy on the oxygen content in the tetragonal phase, U=2.80-1.45 x (eV), was found. This dependence was explained by the interaction of the mobile oxygen ions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
