Starting materials and superconductor stoichiometry

C. E. Hamrin, W. D. Arnett, R. J. De Angelis, X. X. Ding, W. D. Ehmann

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Oxygen contents of as-received La2O3 and Nd2O3 were determined by fast neutron activation analysis. X-ray diffraction was used to determine the phases present in these materials. Results of these analyses show that significant amounts of hydroxides (in one case over 90 wt%) were present in all oxide samples. These results carry tremendous implications for the stoichiometry of the superconductor formation reaction and the composition of the final product. The most important conclusion to be drawn from this study is that many of the bulk superconducting ceramics produced to date may be of approximate composition at best.

Original languageEnglish (US)
Pages (from-to)1063-1066
Number of pages4
JournalSolid State Communications
Issue number11
StatePublished - Mar 1989
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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