Abstract
Mn-doped SrTiO3 samples (3% Mn) with different deviations from stoichiometry have been investigated using XAFS spectroscopy. It was shown the under various preparation conditions manganese atoms can sub-stitute A and B sites of the perovskite structure and are in them in different charge states. Impurity Mn4+ ions that substitute Ti sites occupy on-center position in the lattice, whereas Mn2+ ions that substitute Sr sites are off-center and are displaced from the lattice sites by a distance of 0.32Å.
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Original Russian Text © A.I. Lebedev, I.A. Sluchinskaya, A. Erko, V.F. Kozlovskii, 2009, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 89, No. 9, pp. 545–549.
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Lebedev, A.I., Sluchinskaya, I.A., Erko, A. et al. Direct evidence for off-centering of Mn impurity in SrTiO3 . Jetp Lett. 89, 457–460 (2009). https://doi.org/10.1134/S0021364009090070
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DOI: https://doi.org/10.1134/S0021364009090070