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Hyperfine Interactions

, 239:31 | Cite as

Magnetic interactions in Fe1−xMxSb2O4, M = Mg, Co, deduced from Mössbauer spectroscopy

  • Frank J. BerryEmail author
  • Benjamin P. de Laune
  • Colin Greaves
  • Hien-Yoong Hah
  • Charles E. Johnson
  • Jacqueline A. Johnson
  • Saeed Kamali
  • Jose F. Marco
  • Michael F. Thomas
  • Mariana J. Whitaker
Open Access
Article
Part of the following topical collections:
  1. Proceedings of the 4th Mediterranean Conference on the Applications of the Mössbauer Effect (MECAME 2018), Zadar, Croatia, 27-31 May 2018

Abstract

Magnesium- and cobalt- substituted FeSb2O4, of composition Fe1−xMgxSb2O4 (x = 0.25, 0.50, 0.75) and Fe0.25Co0.75Sb2O4 have been examined by 57Fe Mössbauer spectroscopy. The complex spectra recorded from the magnetically ordered materials are interpreted in terms of models in which the dominant magnetic interactions occur along the rutile-related chains of FeO6 octahedra in the magnetic structure of FeSb2O4. In materials of the type Fe1−xMgxSb2O4, the diamagnetic Mg2+ ions have no magnetic moment and behave as non-magnetic blocks which disrupt the magnetic interactions in the chains along the c-axis forming segments of iron-containing chains separated by Mg2+ ions. In Fe0.25Co0.75Sb2O4 the spectra are composed of components from different configurations of neighbouring Fe2+ and Co2+ ions.

Notes

Acknowledgments

We thank the Engineering and Physical Science Research Council for financial support of this research (EPSRC EP/L014114/1) and also acknowledge financial support from Spanish MINECO (Project MAT 2015-64110-C2-1-P). Data associated with the results shown in this paper are accessible from the University of Birmingham Archive: http://epapers.bham.ac.uk/3097/.

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Copyright information

© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Frank J. Berry
    • 1
    Email author return OK on get
  • Benjamin P. de Laune
    • 1
  • Colin Greaves
    • 1
  • Hien-Yoong Hah
    • 2
  • Charles E. Johnson
    • 2
  • Jacqueline A. Johnson
    • 2
  • Saeed Kamali
    • 2
  • Jose F. Marco
    • 3
  • Michael F. Thomas
    • 4
  • Mariana J. Whitaker
    • 1
  1. 1.School of ChemistryThe University of BirminghamBirminghamUK
  2. 2.Center for Laser ApplicationsUniversity of Tennessee Space InstituteTullahomaUSA
  3. 3.Instituto de Quimica Fisica “Rocasolano”, CSICMadridSpain
  4. 4.Department of PhysicsUniversity of LiverpoolLiverpoolUK

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