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Mössbauer Spectroscopy pp 267–272Cite as

57Fe Mössbauer Studies of Sr2−x Ca x FeReO6 Double Perovskite Compounds

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Abstract

We present a 57Fe Mössbauer study of the Sr2−x Ca x FeReO6 double perovskite series, with x = 0, 0.1, 0.2, 0.5, 1.0, 1.5 and 2.0. The analysis at 300 and 16 K shows iron in three different metal neighbour environments, due to the misplacement of Fe and Re ions (antisite defects). Judging from the isomer shift and hyperfine magnetic field values, iron ions on the perfect ordered structure show intermediate valence state (between Fe3+ and Fe3+), with an effective electronic configuration 3d (5+y), where y decreases from 0.3 to 0.2 as x increases from 0 to 2. Changes in quadrupole shift values for x ⩾ 1.0 confirm the cubic to monoclinic structural transition observed in these compounds.

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Author information

Authors and Affiliations

  1. Physics Department, Trinity College, Dublin 2, Ireland

    A. P. Douvalis, M. Venkatesan & J. M. D. Coey

  2. Materials Science Research Centre, Indian Institute of Technology, Madras, India

    T. Alamelu & U. V. Varadaraju

Authors
  1. A. P. Douvalis
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  2. M. Venkatesan
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  3. J. M. D. Coey
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  4. T. Alamelu
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  5. U. V. Varadaraju
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Editor information

Editors and Affiliations

  1. University of Mainz, Germany

    P. Gütlich  & H. Spiering  & 

  2. University of Essex, Colchester, UK

    B. W. Fitzsimmons

  3. ESRF, Grenoble, France

    R. Rüffer

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© 2003 Springer Science+Business Media New York

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Douvalis, A.P., Venkatesan, M., Coey, J.M.D., Alamelu, T., Varadaraju, U.V. (2003). 57Fe Mössbauer Studies of Sr2−x Ca x FeReO6 Double Perovskite Compounds. In: Gütlich, P., Fitzsimmons, B.W., Rüffer, R., Spiering, H. (eds) Mössbauer Spectroscopy. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0045-1_26

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  • DOI: https://doi.org/10.1007/978-94-010-0045-1_26

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-3993-2

  • Online ISBN: 978-94-010-0045-1

  • eBook Packages: Springer Book Archive

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