Abstract
The electrical conductivity of YBa2Cu3O7 – δ is found to change sharply near the T–OII and OII–OI structural phase transitions. This finding is interpreted using Kroger's quasi-chemical reactions and a phenomenological model of oxygen nonstoichiometry which considers the formation of oxygen divacancies at T < 750 K and δ < 0.5.
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Kalanda, N.A., Trukhan, V.M. & Marenkin, S.F. Electrical Transport and Phenomenological Model of Oxygen Nonstoichiometry in YBa2Cu3O7 – δ . Inorganic Materials 38, 694–699 (2002). https://doi.org/10.1023/A:1016292409175
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DOI: https://doi.org/10.1023/A:1016292409175