Abstract
The local environment and oxidation state of a Mn impurity in strontium titanate doped with 3% Mn were studied by X-ray absorption fine structure spectroscopy. The effect of the synthesis conditions on the incorporation of the impurity into A and B sites was studied. It was established that Mn ions substituting for Ti are in the Mn4+ oxidation state and are on-center. Mn ions substituting for Sr are in the Mn2+ oxidation state and off-center, and are displaced from the lattice site by 0.32 Å absorption near the edge structure can be used to determine the ratio of Mn atoms incorporated into A and B sites in the lattice.
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Original Russian Text © I.A. Sluchinskaya, A.I. Lebedev, A. Erko, 2010, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2010, Vol. 74, No. 9, pp. 1289–1291.
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Sluchinskaya, I.A., Lebedev, A.I. & Erko, A. Local environment and oxidation state of a Mn impurity in SrTiO3 determined from XAFS data. Bull. Russ. Acad. Sci. Phys. 74, 1235–1237 (2010). https://doi.org/10.3103/S1062873810090145
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DOI: https://doi.org/10.3103/S1062873810090145