The electronic structure of La1–x Ga x MnO3+δ. solid solutions is studied by X-ray photoelectron spectroscopy (XPS). The valence state of the manganese is estimated by various methods: by analyzing the difference in the binding energies of the Mn2p3/2 and O1s electronic levels, analyzing exchange splitting in the spectrum of Mn3s, and from the dependence of the binding energy of the XPS spectrum of Mn2p3/2 on the calcium concentration. The state of oxidation of the manganese in the compositions containing calcium lies between Mn3+ and Mn4+. The efficacies of these methods are compared. A correlation is found between the type of crystalline structure of La1–x Ga x MnO3+δ. (0 ≤ x < 1) and the binding energy of the Mn2p3/2 peak.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 76, No. 3, pp. 419–427, May–June, 2009.
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Estemirova, S.H., Fetisov, A.V. & Fetisov, V.B. X-ray photoelectron spectroscopy study of the electronic structure of La1–x Ca x MnO3+δ solid solutions. J Appl Spectrosc 76, 394–401 (2009). https://doi.org/10.1007/s10812-009-9180-4
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DOI: https://doi.org/10.1007/s10812-009-9180-4