Valence states of transition-metal ions in cubic perovskites SrMn1-xFexO3
- Authors
- Lee, H. J.; Kim, G.; Kang, J.-S.; Dabrowski, B.; Han, S. W.; Lee, S. S.; Hwang, C.; Jung, M. C.; Shin, H. J.; Lee, H. G.; Kim, J.-Y.; Min, B. I.
- Issue Date
- May-2007
- Publisher
- AMER INST PHYSICS
- Citation
- JOURNAL OF APPLIED PHYSICS, v.101, no.9, pp 1 - 3
- Pages
- 3
- Journal Title
- JOURNAL OF APPLIED PHYSICS
- Volume
- 101
- Number
- 9
- Start Page
- 1
- End Page
- 3
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/148428
- DOI
- 10.1063/1.2713206
- ISSN
- 0021-8979
1089-7550
- Abstract
- The electronic structures of SrMn1-xFexO3 (0 <= x <= 1) have been investigated by using photoemission spectroscopy (PES) and soft x-ray absorption spectroscopy (XAS). Mn ions in SrMnO3 are found to be in the nearly tetravalent (Mn4+) states, but with a small mixture of the Mn2+ configuration. With increasing x in SrMn1-xFexO3, Mn ions remain in the 4+ states. Fe ions in SrMn1-xFexO3 are also in the nearly tetravalent (Fe4+) states for the whole range of x. Valence-band PES reveals that the occupied Mn t(2g)(3) states are located about 2.5 eV below E-F, while the occupied Fe t(2g)(3)e(g)(1) states are broader than the Mn 3d occupied states, and are located between 3 and 6 eV below E-F. The large overlap between Fe 3d and the O 2p states is found in SrFeO3, reflecting the strong hybridization between the Fe 3d states and the O 2p states, in agreement with the metallic nature of SrFeO3. (c) 2007 American Institute of Physics.
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