An X-ray Absorption Spectroscopic study of YBa2Cu3-xFexO7+y

M. Faiz*, X. Zhou, E. J. Moler, S. A. Kellar, Z. Hussain, N. M. Hamdan, Kh A. Ziq

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We report a study of X-ray absorption near-edge structure of the O K and Cu L3 edges in YBa2Cu3-xFexO7+y for x=0.01, 0.05 and 0.15. We attribute the peaks below 529 eV in the O K edge spectra of YBa2Cu3-xFexO7+y to holes on the O sites. Our results show hole filling with increasing Fe content, which means that Fe enters the structure primarily in the formally trivalent oxidation state. Cu L3 edge spectra reveal increased amounts of Cu3+ with increasing Fe content. The results are discussed in terms of charge balancing.

Original languageEnglish
Pages (from-to)707-711
Number of pages5
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume101-103
DOIs
StatePublished - 1999

Bibliographical note

Funding Information:
The authors acknowledge the support and help provided by the Physics Department of King Fahd University of Petroleum and Minerals at Dhahran, Saudi Arabia, and Lawrence Berkeley National Laboratory at Berkeley, USA, for this study. This work was partially supported by US–DOE.

Keywords

  • High-T superconductors
  • XANES
  • XRD
  • YBaCuFeO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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