Valence states of transition-metal ions in cubic perovskites SrMn1-xFexO3
SCIE
SCOPUS
- Title
- Valence states of transition-metal ions in cubic perovskites SrMn1-xFexO3
- Authors
- Lee, HJ; Kim, G; Kang, JS; Dabrowski, B; Han, SW; Lee, SS; Hwang, C; Jung, MC; Shin, HJ; Lee, HG; Kim, JY; Min, BI
- Date Issued
- 2007-05-01
- Publisher
- AMER INST PHYSICS
- 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10594
- DOI
- 10.1063/1.2713206
- ISSN
- 0021-8979
- Article Type
- Article
- Citation
- JOURNAL OF APPLIED PHYSICS, vol. 101, no. 9, 2007-05-01
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