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Hyperfine Interactions

, Volume 226, Issue 1–3, pp 545–552 | Cite as

Mössbauer spectroscopy in the investigation of new mineral–related materials

  • Frank J. BerryEmail author
  • Benjamin P. de Laune
  • Colin Greaves
  • Mariana J. Whitaker
  • Michael F. Thomas
  • José F. Marco
Article
  • 95 Downloads

Abstract

New materials based on the composition of the mineral schafarzikite, FeSb\(_{2}\textit {O}_{4}\), have been synthesised. \(^{57}\)Fe- and \(^{121}\)Sb- Mössbauer spectroscopy shows that iron is present as Fe\(^{2+}\) and that antimony is present as Sb\(^{3+}\). The presence of Pb\(^{2+}\) on the antimony sites in materials of composition FeSb\(_{1.5}\)Pb\(_{0.5}\textit {O}_{4}\) induces partial oxidation of Fe\(^{2+}_{}\)to Fe\(^{3+}\). The quasi-one-dimensional magnetic structure of schafarzikite is retained in FeSb\(_{1.5}\)Pb\(_{0.5}\textit {O}_{4}\) and gives rise to weakly coupled non-magnetic Fe\(^{2+}\) ions coexisting with Fe\(^{3+}\) ions in a magnetically ordered state. A similar model can be applied to account for the spectra recorded from the compound Co\(_{0.5}\)Fe\(_{0.5}\)Sb\(_{1.5}\)Pb\(_{0.5}\textit {O}_{4}\).

Keywords

Schafarzikite FeSb\(_{2}\textit {O}_{4}\) Mössbauer spectroscopy One dimensional magnetic structure 

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Frank J. Berry
    • 1
    Email author
  • Benjamin P. de Laune
    • 1
  • Colin Greaves
    • 1
  • Mariana J. Whitaker
    • 1
  • Michael F. Thomas
    • 2
  • José F. Marco
    • 3
  1. 1.School of ChemistryUniversity of Birmingham, EdgbastonBirminghamUK
  2. 2.Department of PhysicsUniversity of LiverpoolLiverpoolUK
  3. 3.Instituto de Quimica Fisica ‘Rocasolano’CSICMadridSpain

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