XPS study on La0.67Ca0.33Mn1−xCoxO3 compounds
2014
Abstract The electronic structure of the polycrystalline La 0.67 Ca 0.33 Mn 1− x Co x O 3 compounds with x = 0.5, 0.6, 0.7, 0.8, 0.9 and 1 has been investigated by X-ray photoelectron spectroscopy (XPS). The valence band and the transition metal core level spectra were analyzed. Several contributions from the Mn 3d, Co 3d and of extensively hybridized Mn3d-O2p and Co3d-O2p states were found in the spectral region between 2 eV and 5 eV. The core level spectra show the presence of Co 4+ and Co 2+ states.
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