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'Synchrotron radiation' in keywords Facet   section ZfN Section A  [X]
Facet   Publication Year 1995  [X]
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1Author    Y. Waseda, K. Shinoda, K. SugiyamaRequires cookie*
 Abstract    a tio n D is tr ib u tio n o f Z n F e 20 4 a n d C o F e 20 4 S p in e ls F r o m A n o m a lo u s X -R a y S c a tte r in g 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 ZnFe20 4, 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 CoFe20 4 suggest that 78% of Co2+ occupy the octahedral site, and that the present CoFe20 4 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. 
  Reference    Z. Naturforsch. 50a, 1199—1204 (1995); received November 6 1995 
  Published    1995 
  Keywords    Anomalous X-ray scattering, Rietveld, Synchrotron radiation, Ferrite, Spinel, ZnFe20 4, CoFe20 4 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-1199.pdf 
 Identifier    ZNA-1995-50a-1199 
 Volume    50