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Growth of a-axis-oriented HgBa2CaCu2Ox thin films by rapid quenching

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Abstract

High-quality a-axis-oriented HgBa2CaCu2Ox superconducting thin films have been grown on (100) LaAlO3 substrates using a modified conventional method that contains a short annealing time of 5 min, rapid-quenching process, and an alternative encapsulated approach. We found that the preferred orientations of HgBa2CaCu2Ox thin films can be controlled by rapid quenching at specific temperatures: 800, 700, 600, and 500 °C. The films rapidly quenched in water from 700 °C during a cooling cycle showed predominantly a-axis orientation perpendicular to the film surface. Phase was confirmed by x-ray diffraction pole figures. The a-axis films exhibited a zero-resistance transition temperature >120 K, which is comparable to epitaxial c-axis-oriented films.

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Author notes

  1. S. H. Yun

    Present address: Applied Physics, Johannes-Kepler University Linz, A-4040, Linz, Austria

Authors and Affiliations

  1. Department of Physics, Materials Physics, Royal Institute of Technology, SE-100 44, Stockholm, Sweden

    S. H. Yun & U. O. Karlsson

  2. Department of Condensed Matter Physics, Royal Institute of Technology, SE-100 44, Stockholm, Sweden

    B. J. Jönsson & K. V. Rao

  3. Department of Physics, Linköping University, SE-58183, Linköping, Sweden

    L. D. Madsen

Authors
  1. S. H. Yun
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  2. U. O. Karlsson
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  3. B. J. Jönsson
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  4. K. V. Rao
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  5. L. D. Madsen
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Yun, S.H., Karlsson, U.O., Jönsson, B.J. et al. Growth of a-axis-oriented HgBa2CaCu2Ox thin films by rapid quenching. Journal of Materials Research 14, 3181–3184 (1999). https://doi.org/10.1557/JMR.1999.0426

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  • DOI: https://doi.org/10.1557/JMR.1999.0426

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