Manufacture of GdBa2Cu3O7−x Superconducting Thin Films Using High-Thermal-Stability Precursors Playing the Role of Intermediate-Phase Grain-Growth Inhibitors

Xiao Tang, Dong He, Zhao Yue, Jean-Claude Grivel

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We have developed a fluorine-free metal–organic decomposition method using acrylic acid as the solvent for the synthesis of GdBCO superconducting thin films. Commonly used propionic acid was also used to make a comparison with acrylic acid. Acrylic acid was found to be polymerized during drying, resulting in high thermal stability of the precursor solution. Due to the elevated decomposition temperature of the organic compounds in the acrylic-acid-based precursor, the formation of intermediate phases such as CuO was found delayed; therefore, the grain growth and phase segregation were suppressed. The superior quality of pyrolyzed films induced by the use of polymerizable acrylic acid is reflected in the Jcof the GdBCO films, which achieved 1.2MA/cm2.
Original languageEnglish
Article number7500104
JournalI E E E Transactions on Applied Superconductivity
Volume24
Issue number1
Number of pages4
ISSN1051-8223
DOIs
Publication statusPublished - 2014

Keywords

  • Acrylic acid
  • GdBCO
  • grain-growth inhibitor
  • polymerization
  • thin films

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