In situ growth and doping of oxycarbonate Sr2CuO2(CO3) epitaxial thin films

K. W. Chang, B. W. Wessels*, W. Qian, V. P. Dravid, J. L. Schindler, C. R. Kannewurf, D. B. Studebaker, T. J. Marks, R. Feenstra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Epitaxial cuprate oxycarbonate Sr2CuO2(CO3) thin films have been prepared by metal-organic chemical vapor deposition. The effects of deposition conditions on phase stability have been determined. X-ray diffraction, transmission electron microscopy, Rutherford backscattering spectroscopy, inductively coupled plasma atomic emission spectroscopy, and Fourier transform infrared spectroscopy were used to characterize the oxycarbonate thin films. The resistivity of the undoped Sr2CuO2(CO3) thin films decreases from ∼0.2 Ω cm to ∼0.01 Ω cm upon post annealing in oxygen, but semiconducting behavior is observed. Doping has been achieved through partial substitution of BO3-3 for CO2-3. Superconductivity with a Tc (onset) of 34 K and a Tc (zero) of 20 K has been obtained.

Original languageEnglish (US)
Pages (from-to)11-20
Number of pages10
JournalPhysica C: Superconductivity and its applications
Volume303
Issue number1-2
DOIs
StatePublished - Jul 10 1998

Keywords

  • Chemical vapor deposition
  • Infrared spectroscopy
  • Oxycarbonate thin films
  • RBS spectroscopy
  • TEM
  • Transport properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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