Novel metal-organic chemical vapor deposition / TlF annealing route to thin films of Tl 1Ba 2Ca 2Cu 3O 9+x

Richard J. McNeely, J. A. Belot, J. L. Schindler, M. P. Chudzik, C. R. Kannewurf, X. F. Zhang, D. J. Miller, Tobin J Marks

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Abstract

Thin films of Tl 1Ba 2Ca 2Cu 3O 9+x have been grown on single crystal (110) LaAlO 3 by a metal-organic chemical vapor deposition process employing Ba(hfa) 2.mep, Ca(hfa) 2.tet, and Cu(dpm) 2 (hfa = hexafluoroacetylacetonate; dpm = dipivaloylmethanate; tet = tetraglyme; mep = methylethylpentaglyme) as the volatile metal sources. A subsequent phase-selective annealing procedure accomplishes thallination using TlF in a bulk oxide pellet. The resulting films are nearly phase-pure and highly oriented and contain negligible fluoride by windowless energy-dispersive x-ray measurements. The films exhibit transport measured T c = 103 K and J c > 10 4 A/cm 2 (77 K, 0 T) and at low temperatures retain J c > 10 5 A/cm 2 (5 K, 4.5 T) as measured by magnetic hysteresis.

Original languageEnglish
Pages (from-to)133-134
Number of pages2
JournalJournal of Superconductivity
Volume11
Issue number1
Publication statusPublished - 1998

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Keywords

  • Fluoride
  • MOCVD
  • Thin films
  • Tl-1223

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

McNeely, R. J., Belot, J. A., Schindler, J. L., Chudzik, M. P., Kannewurf, C. R., Zhang, X. F., Miller, D. J., & Marks, T. J. (1998). Novel metal-organic chemical vapor deposition / TlF annealing route to thin films of Tl 1Ba 2Ca 2Cu 3O 9+x Journal of Superconductivity, 11(1), 133-134.