X-ray spectroscopic studies of a-site ordered perovskite LaMn 3B4O12(B=V, Cr)

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Abstract

We investigated the electronic structure of LaMn3B 4O12 (LMVO) and LaMn3B4O 12 (LMCO) by X-ray absorption spectroscopy (XAS) and resonant X-ray emission spectroscopy (RXES) measurements around Mn 2p edges. The Mn 2p-XAS spectra showed that the Mn valence is trivalent for LMCO and divalent for LMVO. These results indicate that the A'-site can accommodate not only Jahn-Teller ions but also non-Jahn-Teller ions. The Mn 2p-RXES spectra showed the difference of the hybridization between Mn-3d and O-2p orbitals. According to theoretical calculation results, LMCO is candidates for the negative charge transfer energy compound. © 2012 The Surface Science Society of Japan.

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Mizumaki, M., Saito, T., Uozumi, T., & Shimakawa, Y. (2012). X-ray spectroscopic studies of a-site ordered perovskite LaMn 3B4O12(B=V, Cr). E-Journal of Surface Science and Nanotechnology, 10, 575–577. https://doi.org/10.1380/ejssnt.2012.575

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