Preparation and characterization of Bi2Sr2CaCu2O8+δ thin films on MgO single crystal substrates by chemical solution deposition

Jean-Claude Grivel, Katarzyna Kepa, T. Hlásek, Niels Hessel Andersen, K. Rubešová

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Bi2Sr2CaCu2O8 thin films have been deposited on MgO single crystal substrates by spin-coating a solution based on 2-ethylhexanoate precursors. Pyrolysis takes place between 200°C and 450°C and is accompanied by the release of 2-ethylhexanoic acid, CO2 and H2O vapour. Highly c-axis oriented Bi2Sr2CaCu2O8 films were obtained after heat treatment at 840°C in air. The highest Tc of 81K was measured in a 10-layer film. Subsequent post-annealing in Ar and pure O2 did not improve the superconducting properties of the films and resulted in the appearance of Bi2CaCuO5 or Bi2(Sr, Ca)2CuO6 impurities.
Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume486
Pages (from-to)32-36
ISSN0921-4534
DOIs
Publication statusPublished - 2013

Keywords

  • Bi2Sr2CaCu2O8
  • Thin film
  • Chemical solution deposition

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