Abstract
The influence of replacements of yttrium and barium in YBa2Cu3O y and doping of this compound with CeO2, ZrO2, and Pr2O3 on the capability of absorbing water from the annealing atmosphere at T = 200°C has been studied. The complication of the chemical composition of the 123-type compounds leads to an enhancement of their stability to aggressive components of the gaseous phase (H2O, CO2). These compounds have a variable chemical composition both in oxygen and water and can exist in three modifications: the oxygen-ordered ortho-phase, the oxygen-disordered tetra-phase, and the pseudocubic phase with a variable water content, which at T = 200°C separates into an oxygen-deficient water-enriched phase and an oxygen-rich anhydrous phase.
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Original Russian Text © I.B. Bobylev, N.A. Zyuzeva, 2013, published in Fizika Tverdogo Tela, 2013, Vol. 55, No. 5, pp. 855–860.
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Bobylev, I.B., Zyuzeva, N.A. Influence of chemical composition on the stability of YBa2Cu3O y in a humid atmosphere. Phys. Solid State 55, 930–936 (2013). https://doi.org/10.1134/S1063783413050053
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DOI: https://doi.org/10.1134/S1063783413050053