Manometric Determination of the Oxygen Diffusion Coefficients in YBa2Cu3−yFeyO6+x
Kargin J. Cornejo H.E.S. Zhangozin K. Zhanabergenov T. Kassymkhanov Z. Seo J. Holmes S.N. Barnes C.H.W. Aguiar J.A. De Los Santos Valladares L.
December 2024Springer
Journal of Superconductivity and Novel Magnetism
2024#37Issue 11-121965 - 1975 pp.
Thermodynamic parameters, such as the activation energy (Ea) and the diffusion coefficient (D0), of weakly bounded oxygen in Fe-doped YBa2Cu3O6+x (YBa2Cu3-yFeyO6+x) system were obtained utilizing the Manometric technique. It is found that under isothermal conditions, oxygen desorption in YBa2Cu3O6+x (YBCO) occurs following an exponential decay trend and in two distinct stages. During the first stage, the majority of absorbed oxygen is released, while the second stage exhibits a delayed degassing kinetics. Ea and D0 were determined for both, pressed and powdered, samples of the YBCO and YBa2Cu3-yFeyO6+x systems, from experimental kinetic curves, depicting gas release P(t) under isothermal vacuum degassing conditions. It is demonstrated that doping with Fe prevents oxygen exchange in YBCO, as evidenced by the reduction in the quantity of released oxygen with increasing iron index (y). The experimental results validate the efficacy of the Manometric method for analyzing and determining the thermodynamic and kinetic properties of the YBCO superconductor.
Manometry of superconductors , Oxygen diffusion coefficients , Superconductors , YBCO
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L.N. Gumilyov, Eurasian National University, NPJSC, Astana, Kazakhstan
Laboratorio de Ceramicos y Nanomateriales, Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, Ap. Postal 14-0149, Lima, Peru
TSK-Vostok, Astana, Kazakhstan
College of Science and Technology Convergence, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon-do, 26493, South Korea
Department of Electronic and Electrical Engineering, University College London, Torrington Place, London, WC1E 7JE, United Kingdom
Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Ave, Cambridge, CB3 0HE, United Kingdom
Programa de Pós-Graduação em Ciências de Materiais, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, PE, Recife, 50670-901, Brazil
L.N. Gumilyov
Laboratorio de Ceramicos y Nanomateriales
TSK-Vostok
College of Science and Technology Convergence
Department of Electronic and Electrical Engineering
Cavendish Laboratory
Programa de Pós-Graduação em Ciências de Materiais
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