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Electronic structures of SrMn1-xMoxO3 (0≤x≤ 0. 75) perovskite oxides investigated by XAS and PES : Electronic structures of SrMn<sub>1-<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>3</sub> (0 ≤ x ≤ 0.75) perovskite oxides investigated by XAS and PES
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- Authors
- Issue Date
- 2011-04
- Publisher
- AMER INST PHYSICS
- Citation
- JOURNAL OF APPLIED PHYSICS, Vol.109 No.7
- Abstract
- Electronic structures of perovskite oxides of SrMn1-xMoxO3 (0 <= x <= 0.75) have been investigated by employing soft x-ray absorption spectroscopy (XAS) and photoemission spectroscopy (PES). It is found that the valence states of Mn ions change systematically from Mn4+ for x = 0, to nearly Mn3+ for x = 0.3, and Mn2+ for x = 0.5, and then remain as Mn2+ for x >= 0.5. Both the Mo 3d core-level PES and Mo 3p XAS spectra show that the valence states of Mo ions remain unchanged as being hexavalent (Mo6+) for x <= 0.5 but that they decrease for x > 0.5 with increasing x. This study shows that Mo ions are mixed-valent for x > 0.5 in SrMn1-xMoxO3, either with the Mo4+-Mo6+ configuration or with the Mo4+-Mo5+-Mo6+ configuration. (C) 2011 American Institute of Physics. [doi. 10.1063/1.3560890]
- ISSN
- 0021-8979
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