Properties of YBCO obtained by modified hydroxycarbonate method

L. Ciontea, T. Petrisor, V. Boffa

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Abstract

YBCO was synthesized by the co-precipitation of stoichiometric amounts of nitrate solutions of Y, Ba and Cu using a mixture of NaOH, Na2CO3and H2C2O4in a molar ratio of 5:1:1 as a precipitation agent. Even after prolonged thermal treatment at 950 °C the samples exhibit a zero-resistance critical temperature of about 87 K. This fact indicates a copper deficiency of about 0.1, more reduced than in the case of hydroxycarbonate co-precipitation. The as-synthesized samples have a high density, reaching 94% of the theoretical density. The SEM analyses show a large grain distribution from microns to tens of microns, favourable for good stacking. © 1997 Academic Press Limited.
Original languageEnglish
Pages (from-to)273 - 277
Number of pages5
JournalSuperlattices and Microstructures
Volume21
Issue number3
Publication statusPublished - Apr 1997
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ciontea, L., Petrisor, T., & Boffa, V. (1997). Properties of YBCO obtained by modified hydroxycarbonate method. Superlattices and Microstructures, 21(3), 273 - 277.