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Local environment of 119Sn4+ probe ions in the bulk and on the surfaces of substituted chromites with perovskite-type structure Y1–x Ca x CrO3

  • P. B. Fabrichnyi
  • M. I. Afanasov
  • E. M. Mezhuev
  • A. Wattiaux
  • C. Labrugère
  • C. Delmas
Proceedings of the 13th International Conference “Mössbauer Spectroscopy and its Applications”

Abstract

A specific feature of the Mössbauer spectra of 119Sn in Y1–x Ca x CrO3 samples containing 0.3 at % Sn4+ in the bulk of crystallites is an extra sextet component corresponding to hyperfine field H(119Sn) = 65 kOe at 4.2 K. This effect is explained by the formation of Sn4+ impurity associates in the chromium sublattice. A drastic weakening in spin polarization is observed for the Sn4+ ions in surface sites, but is found not to be related to the presence of heterovalent Ca2+ ions.

Keywords

Chromite Spin Polarization Crystallite Surface 119Sn Nucleus Probe Cation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Allerton Press, Inc. 2015

Authors and Affiliations

  • P. B. Fabrichnyi
    • 1
  • M. I. Afanasov
    • 1
  • E. M. Mezhuev
    • 1
  • A. Wattiaux
    • 2
  • C. Labrugère
    • 3
  • C. Delmas
    • 2
  1. 1.Faculty of ChemistryMoscow State UniversityMoscowRussia
  2. 2.Institut de Chimie de la Matière Condensée de BordeauxUniversité de BordeauxPessac CedexFrance
  3. 3.Plateforme Aquitaine de Caractérisation des Matériaux, Pessac CedexUniversité de BordeauxBordeauxFrance

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