Deposition and properties of superconducting MgB2 thin films

X. X. Xi, X. H. Zeng, A. V. Pogrebnyakov, A. Soukiassian, S. Y. Xu, Y. F. Hu, E. Wertz, Q. Li, Y. Zhong, C. O. Brubaker, Z. K. Liu, E. M. Lysczek, J. M. Redwing, J. Lettieri, D. G. Schlom, W. Tian, H. P. Sun, X. Q. Pan

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Abstract

The recently discovered superconductor MgB2 with Tc at 39 K has great potential in superconducting electronics. In this paper, we review the deposition techniques used for MgB2 thin films in the light of a thermodynamic study of the Mg-B system with the calculation of phase diagrams (CALPHAD) modeling technique. This thermodynamic study identifies a growth window in the pressure-temperature phase diagram, in which the magnesium pressure is very high for likely in situ growth temperatures. A Hybrid Physical-Chemical Vapor Deposition (HPCVD) technique that successfully achieves such a high Mg pressure is shown to produce in situ epitaxial MgB2 thin films with bulk superconducting properties.

Original languageEnglish (US)
Pages (from-to)801-806
Number of pages6
JournalJournal of Superconductivity and Novel Magnetism
Volume16
Issue number5
StatePublished - Dec 1 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Xi, X. X., Zeng, X. H., Pogrebnyakov, A. V., Soukiassian, A., Xu, S. Y., Hu, Y. F., Wertz, E., Li, Q., Zhong, Y., Brubaker, C. O., Liu, Z. K., Lysczek, E. M., Redwing, J. M., Lettieri, J., Schlom, D. G., Tian, W., Sun, H. P., & Pan, X. Q. (2003). Deposition and properties of superconducting MgB2 thin films. Journal of Superconductivity and Novel Magnetism, 16(5), 801-806.