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Effects of the Final Heat-Treatment Conditions on Microstructures of YbBa2Cu3O7- δ Superconducting Final Films Deposited on LaAlO3(001) Substrates by the Dipping—Pyrolysis Process

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Advances in Superconductivity XII

Abstract

We investigated effects of final heat-treatment conditions on microstructures of YbBa2Cu3O7-δ films formed on LaAlO3(001) substrates by the dipping-pyrolysis process. First, we prepared amorphous precursor films by heating the spin-coated substrates at 425 °C in air. Subsequently, YbBa2Cu3O7-.δ films were prepared by heat-treating these precursor films at 750°C in an Ar gas flow under various conditions of heating rate and holding time. Microstructures of the final films were studied by transmission electron microscopy. In conclusion, it was found that rapid heating rate at the final heat-treatment is necessary for the epitaxial growth of the superconducting films, and that long holding time is effective for the grain growth of the crystals.

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© 2000 Springer Japan

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Shibata, J., Yamagiwa, K., Hirabayashi, I., Hirayama, T., Ikuhara, Y. (2000). Effects of the Final Heat-Treatment Conditions on Microstructures of YbBa2Cu3O7- δ Superconducting Final Films Deposited on LaAlO3(001) Substrates by the Dipping—Pyrolysis Process. In: Yamashita, T., Tanabe, Ki. (eds) Advances in Superconductivity XII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-66877-0_176

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  • DOI: https://doi.org/10.1007/978-4-431-66877-0_176

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-70270-2

  • Online ISBN: 978-4-431-66877-0

  • eBook Packages: Springer Book Archive

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