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Determination of the valence of manganese and iron in Mn- and MnZn-ferrites from the shift in x-ray absorption K-edges

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Abstract

The concept of effective coordinate charge is used to show that the relative shift in the K absorption edge of ions of transition metals in simple oxides and ferrites is determined by their valence. Formulas are obtained linking the shortwave shift of the K-edge with the valence of the ions in ferrites having the structure of a spinel. A method is proposed for determining the mean valence of ions of iron and manganese in manganese-bearing ferrites. The method is used to study cooling of commercial MnZn-ferrite with different oxygen partial pressures.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 95–98, October, 1985

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Kirichok, P.P., Kopaev, A.V. & Pashchenko, V.P. Determination of the valence of manganese and iron in Mn- and MnZn-ferrites from the shift in x-ray absorption K-edges. Soviet Physics Journal 28, 849–852 (1985). https://doi.org/10.1007/BF00897964

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Keywords

  • Oxide
  • Oxygen
  • Iron
  • Ferrite
  • Manganese