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Applied Physics A

, Volume 43, Issue 3, pp 213–218 | Cite as

57Fe,61Ni, and121Sb Mössbauer study of oxidic spinel ferrites CoxNi5/3−xFeSb1/3O4

  • G. Dehe
  • P. Griesbach
  • P. Gütlich
  • J. Suwalski
Solids and Materials

Abstract

Antimony substituted nickel ferrites Co x Ni5/3−xFeSb1/3O4 withx=0,1/3,1,4/3, and 5/3 were prepared by the common ceramic technique, and the single-phase structure was confirmed by x-ray powder diffraction.57Fe Mössbauer spectra were recorded at 4.2 K with and without an applied magnetic fieldHlong=60 kOe in order to determine the cation distribution and the spin structure. Utilizing the cation distributions and the Yafet-Kittel spin structures for B-site Fe3+ ions, derived from Mössbauer experiments the calculated magnetic moments are in excellent agreement with the experimental values at 4.2 K. The existence of Ni2+ ions in crystallographic A-sites was confirmed by61Ni Mössbauer spectroscopy. The magnitude of the supertransferred hyperfine field at121Sb nuclei is determined mainly by a covalent spin charge transfer from A-sites, occupied by Fe3+, Ni2+, and Co2+ ions, into the 5s orbital of Sb5+ ions. The different contributions of various magnetic A-site ions to H STHF Sb may be understood by combining the energy differences between the ionic configurations, connected with the electron transfer process and the related exchange integrals.

PACS

75.30 76 

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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • G. Dehe
    • 1
  • P. Griesbach
    • 1
  • P. Gütlich
    • 1
  • J. Suwalski
    • 2
  1. 1.Institut für Anorganische Chemie und Analytische ChemieJohannes-Gutenberg-UniversitätMainzGermany
  2. 2.Department E IIIInstitute of Atomic EnergyOtwockPoland

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