Clean epitaxial MgB2 films fabricated by the ex situ annealing of chemical vapour deposition-grown B films in Mg vapour

Mina Hanna, Shufang Wang, Andrew David Eck, Rudeger H.T. Wilke, Ke Chen, Arsen Soukiassian, Che Hui Lee, Wenqing Dai, Qi Li, Joan M. Redwing, Darrell G. Schlom, X. X. Xi, Kamel Salama

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Low residual resistivity in superconducting thin films is required for their applications in radio frequency (RF) cavities. Here we report on clean epitaxial MgB2 films fabricated by the ex situ annealing of B films, grown by chemical vapour deposition, in Mg vapour. The films show sharp superconducting transitions at about 40 K and a high residual resistivity ratio of about 10. The result indicates that a clean precursor B film and a contamination-free annealing procedure are important for a viable MgB 2 film fabrication process for RF cavity applications.

Original languageEnglish (US)
Article number045005
JournalSuperconductor Science and Technology
Volume21
Issue number4
DOIs
StatePublished - Apr 1 2008

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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