Direct measurement of the Cu oxidation number of cuprate superconductor ceramics

Z. Dankhazi, A. Szasz, J. Kojnok, H. Kirchmayr, H. Müller, L. M. Watson, M. Gal, K. Torkos, K. Solymos

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Abstract

The Cu oxidation number in YBa2Cu3O7 has been measured directly by soft X-ray fluorescent spectroscopy both at room temperature and at liquid N2 temperature. The measurements are based on a calibration curve from different Ba-O compounds. The effect of changes in oxidation number above and below the transition temperature and its role in high Tc superconductivity are discussed.

Original languageEnglish
Pages (from-to)219-225
Number of pages7
JournalJournal of Superconductivity
Volume4
Issue number3
DOIs
Publication statusPublished - Jun 1 1991

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Keywords

  • Cu oxidation number
  • Cuprate superconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Dankhazi, Z., Szasz, A., Kojnok, J., Kirchmayr, H., Müller, H., Watson, L. M., Gal, M., Torkos, K., & Solymos, K. (1991). Direct measurement of the Cu oxidation number of cuprate superconductor ceramics. Journal of Superconductivity, 4(3), 219-225. https://doi.org/10.1007/BF00620790