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Hyperfine Interactions

, Volume 53, Issue 1–4, pp 335–338 | Cite as

Criteria for stabilizing a high spin d4 electronic configuration: Application to the synthesis and the mössbauer characterization of high spin iron (IV) in oxides

  • L. Fournes
  • G. Demazeau
  • Li-Ming Zhu
  • N. Chevreau
  • M. Pouchard
Part I Chemical Structure and Bonding

Abstract

A Mössbauer study has been carried out on different oxides with the general formula (A, A′)2M0.50Fe0.50O4 (A=Ca, Sr, Ba: A′=La; M=Li, Mg, Zn, Ga, Ni). In all these phases with K2NiF4-type-derived structure the distortion of the (FeO6) octahedra is sufficient to stabilize a high spin state for iron (IV)\((t_{2g}^3 d_{z^2 }^l )\). An interpretation of the evolution of Mössbauer parameters is proposed, based on bond competition considerations.

Keywords

High Spin Isomer Shift Electronic Configuration High Spin State Iron Oxidation State 
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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References

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Copyright information

© J.C. Baltzer AG, Scientific Publishing Company 1990

Authors and Affiliations

  • L. Fournes
    • 1
  • G. Demazeau
    • 1
  • Li-Ming Zhu
    • 1
  • N. Chevreau
    • 1
  • M. Pouchard
    • 1
  1. 1.Laboratoire de Chimie du Solide du CNRSTalence CedexFrance

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