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Peculiarities of microstructure of YBa2Cu3O7-δ single crystals heat treated under different conditions

  • Structure, Phase Transformations, and Diffusion
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Abstract

The microstructure of single-crystal YBa2Cu3O7-δ samples has been studied after a reaction with water vapor at 200–300°C and after restoring annealings at 400–930°C. The absorption of water from air during low-temperature annealing was found to lead to the disappearance of twin structure and appearance of stress fields around precipitated particles. During restoring annealing at 930°C, the primary recrystallization of single crystals takes place. The initial twin structure was not formed in the course of subsequent oxidation.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg, 620990, Russia

    N. A. Zyuzeva & I. B. Bobylev

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  1. N. A. Zyuzeva
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  2. I. B. Bobylev
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Correspondence to N. A. Zyuzeva.

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Original Russian Text © N.A. Zyuzeva, I.B. Bobylev, 2014, published in Fizika Metallov i Metallovedenie, 2014, Vol. 115, No. 4, pp. 384–390.

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Zyuzeva, N.A., Bobylev, I.B. Peculiarities of microstructure of YBa2Cu3O7-δ single crystals heat treated under different conditions. Phys. Metals Metallogr. 115, 358–364 (2014). https://doi.org/10.1134/S0031918X14040176

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  • DOI: https://doi.org/10.1134/S0031918X14040176

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