Oxygen stoichiometry and superconductivity in (YLa)(Ba3.4La 0.6)Cu6O14+or-y

J. R. Grasmeder, M. T. Weller, D. H. Gregory, P. C. Lanchester, B. Jayaram

Research output: Contribution to journalArticlepeer-review


The results of a study into the annealing behaviour of an oxygen-rich superconductor, YLa1.6Ba3.4Cu6O 14+or-y(-0.12<y<0.47), are reported. As with YBa 2Cu3O7-d, the oxygen level increases with decreasing quench temperature (Tq), and materials are superconducting only for anneals below 500 degrees C. However, an unusual behaviour of the unit cell symmetry has been observed by powder X-ray diffraction: orthorhombicity increases with increasing Tq, and the superconducting materials in this series are tetragonal.

Original languageEnglish
Article number008
Pages (from-to)125-128
Number of pages4
JournalSuperconductor Science and Technology
Issue number2
Publication statusPublished - 1989
Externally publishedYes

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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