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

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)557-561
頁數5
期刊Journal of Low Temperature Physics
131
發行號3-4
DOIs
出版狀態已發佈 - 2003 五月

ASJC Scopus subject areas

  • 原子與分子物理與光學
  • 材料科學(全部)
  • 凝聚態物理學

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