The decomposition reaction of YBa2Cu3O7-x in hydrogen reduction

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In the present study the maximum oxygen contents of the superconducting oxides, YBa2Cu3O7-x have been determined by the thermogravimetric analysis (TGA). Decomposition reactions in hydrogen atmosphere were also determined by the X-ray diffraction analysis, especially by considering the several inflections exhibited in the TGA curve of YBa2Cu3O7-x in hydrogen reduction to 950°C. Particular decomposition reaction at the long plateau of 615-760°C has been identified as chemical reactions, Ba4Y2O7 → Ba2Y2O5 + 2BaO and 3BaCuO2 → Ba2Cu3O5 + BaOx without weight loss.

Original languageEnglish
Pages (from-to)259-262
Number of pages4
JournalMaterials Letters
Issue number4-5
StatePublished - Jul 1996


  • Hydrogen reduction
  • Superconductors
  • YBaCuO


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