Abstract
Kinetic aspects of the oxygen-isotope exchange in YBa2Cu3O7–x (Y123) are discussed. In the structure of Y123 the CuO chains are the “fastest paths” for the 18 O diffusion, from which further exchange with the apical and planar sites takes place. Based on isothermal oxygen-isotope exchange experiments and an assumed diffusion model, oxygen-tracer diffusion coefficients in Y123 have been estimated. Total and site-selective oxygen-isotope effects on transition temperature T c were measured. It was found that T c in Y123 is mainly affected due to the oxygen-isotope substitution in CuO2 planes.
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Conder, K. (2007). Site-Selective Oxygen-Isotope Exchange in YBa2Cu3O7−x . In: Bussmann-Holder, A., Keller, H. (eds) High Tc Superconductors and Related Transition Metal Oxides. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-71023-3_5
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DOI: https://doi.org/10.1007/978-3-540-71023-3_5
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