Abstract
The Mn3s X-ray photoelectron spectra of manganites were studied. It was shown that for the formal valence of manganese from 3+ to 3.3+, the doping holes are O2p in character; as the valence of manganese increases further, the Mn3d states acquire holes. For La0.7Sr0.3MnO3, the Mn3p-3d resonance spectra provided information about the occupied and unoccupied Mn3d states, and the correlation energy U = 6.7 eV was determined experimentally. An analysis of X-ray dichroism on the L absorption spectra of three-dimensional La7/8Sr1/8MnO3 showed that the cooperative Jahn Teller distortion of the orthorhombic phase at 240 K was related to (x 2 − z 2)/(y 2 − z 2) type orbital ordering.
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Original Russian Text Copyright © 2008 by V. R. Galakhov, M. C. Falub, K. Kuepper, and M. Neumann
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Translated from Zhurnal Strukturnoi Khimii, Vol. 49, Supplement, pp. S58–S62, 2008.
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Galakhov, V.R., Falub, M.C., Kuepper, K. et al. X-ray spectroscopy of lanthanum manganites: Nature of doping holes, correlation effects, and orbital ordering. J Struct Chem 49 (Suppl 1), 54–58 (2008). https://doi.org/10.1007/s10947-008-0201-6
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DOI: https://doi.org/10.1007/s10947-008-0201-6