Article
Cited 1 time in 
Cited 1 time in 
Cited 1 time in
Metadata Downloads
Polarization-dependent soft X-ray absorption spectroscopy study of layered thermoelectric cobalt oxide: Bi2-xPbxSr2Co2O8+delta SCIE SCOPUS KCI
- Title
- Polarization-dependent soft X-ray absorption spectroscopy study of layered thermoelectric cobalt oxide: Bi2-xPbxSr2Co2O8+delta
- Date Issued
- 2008-08
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- The electronic structures of Bi2-xPbxSr2Co2O8+delta (x = 0; 0.4 0.6) thermoelectric single crystals have been investigated by using polarization-dependent soft X-ray absorption spectroscopy (XAS). The Co ions are found to be in the Co3+-Co4+ mixed-valence states with a low-spin configuration, and the lowest unoccupied states are found to have mainly an out-of-plane Co a(1g) character. With increasing x in Bi2-xPbxSr2Co2O8+delta all the peaks in the O 1s XAS spectra become broadened, suggesting that the improved thermoelectric property in Bi2-xPbxSr2Co2O8+delta for x > 0 is due to the enhanced delocalized character of Co a(1g) hole carriers.
- Keywords
- XAS; thermoelectric; electronic structure; valence states; TRANSITION-METAL COMPOUNDS; SINGLE-CRYSTALS; (BI,PB)-SR-CO-O SYSTEM; NACO2O4
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 53, no. 2, page. 1010 - 1013, 2008-08
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
Communities & Collection
Related Researcher
- 민병일MIN, BYUNG IL
- Dept of Physics