Abstract
YBa2Cu3O7 − x films of b orientation have been grown on the surface of (100)SrLaGaO4 crystal. It is demonstrated that the films pass to the superconducting state at a temperature of 89 K. In the nonsuper-conducting region, the film resistance decreases linearly with a decrease in temperature at a rate of 30 Ω per 100°C. According to the X-ray diffraction data on the crystallographic structure of the YBa2Cu3O7 − x films, they are single-crystal and b-oriented. It is shown that the films contain no domains of other crystallographic orientations, including a-oriented domains. Therefore, the films are free of structural twins.
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Original Russian Text © E.A. Stepantsov, R. Arpaia, F. Lombardi, 2015, published in Kristallografiya, 2015, Vol. 60, No. 3, pp. 440–444.
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Stepantsov, E.A., Arpaia, R. & Lombardi, F. Growth of twin-free b-oriented YBa2Cu3O7 − x films. Crystallogr. Rep. 60, 393–396 (2015). https://doi.org/10.1134/S1063774515030207
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DOI: https://doi.org/10.1134/S1063774515030207