Superconducting NdBa2Cu3O7-δ thin films grown on bare (11̄02) sapphire by pulsed laser deposition

T. Y. Cheng, P. I. Lin, S. F. Chen, S. J. Liu, J. Y. Juang, J. Y. Lin, K. H. Wu, T. M. Uen, Y. S. Gou, R. L. Wang, H. C. Li

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Abstract

Superconducting NdBa2 Cu3 O7-δ (NBCO) thin films with Tc=89 K have been successfully grown on bare (11 02) sapphire substrates by pulsed laser deposition (PLD). The X-ray diffraction results show that the as-grown NBCO films are all c-axis oriented with no observable second phase. The c-axis parameter decreases monotonically with increasing the deposition temperature (Ts), suggesting that the corresponding degradation of Tc for Ts> 790 °C might not originate from oxygen deficiency. It is conceived that the film-substrate reaction that occurring at the interface may cause Ba-deficiency and hence enhance Nd-Ba antisite substitutions.

Original languageEnglish
Pages (from-to)557-561
Number of pages5
JournalJournal of Low Temperature Physics
Volume131
Issue number3-4
DOIs
Publication statusPublished - 2003 May

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Cheng, T. Y., Lin, P. I., Chen, S. F., Liu, S. J., Juang, J. Y., Lin, J. Y., Wu, K. H., Uen, T. M., Gou, Y. S., Wang, R. L., & Li, H. C. (2003). Superconducting NdBa2Cu3O7-δ thin films grown on bare (11̄02) sapphire by pulsed laser deposition. Journal of Low Temperature Physics, 131(3-4), 557-561. https://doi.org/10.1023/A:1022967706861