Cation Distribution of ZnFe204 and CoFe204 Spinels From Anomalous X-Ray Scattering

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Abstract

The distribution of Zn2+ and Co2+ cations in ferrite spinels has been determined by applying anomalous X-ray scattering (AXS) near the K absorption edges of Fe, Co and Zn. The energy dependence of the reflection intensities of ZnFe204, detected at the Fe K and Zn K absorption edges, can only be explained when all Zn2+ being allocated to the tetrahedral site formed by oxygens. On the other hand, the results for CoFe204 suggest that 78% of Co2+occupy the octahedral site, and that the present CoFe204 sample is classified as inverse spinel, although a partial disorder is included. The usefulness of this AXS method coupled with the common Rietveld analysis was well-recognized by determining the cation distribution even in a system with next neighboring elements of the periodic table.

Original languageEnglish
Pages (from-to)1199-1204
Number of pages6
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume50
Issue number12
DOIs
Publication statusPublished - 1995 Dec 1

Keywords

  • Anomalous X-ray scattering
  • CoFe2O4
  • Ferrite
  • Rietveld
  • Spinel
  • Synchrotron radiation
  • ZnFe2O4

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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