Electronic structures of AgNi1-xCoxO2 delafossite oxides
SCIE
SCOPUS
- Title
- Electronic structures of AgNi1-xCoxO2 delafossite oxides
- Authors
- Lee, HJ; Lee, SS; Kim, G; Kang, JS; Song, HK; Shin, YJ; Han, SW; Song, HJ; Shin, HJ; Min, BI
- Date Issued
- 2007-03
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Electronic structures of AgNi1-xCoxO2 (0 <= x <= 1) delafossite oxides have been investigated by using photoemission spectroscopy (PES) and soft X-ray absorption spectroscopy (XAS). T 2p XAS (T = Co, Ni) spectra of AgNi1-xCoxO2 show that the valence states of Co ions are trivalent and do not change with x. In contrast, Ni ions are in the Ni2+-Ni3+ mixed-valent states and the trivalent component increases with increasing x. This finding suggests that the metallic nature of AgNi1-xCoxO2 for low values of x arises from the divalent Ni ions. The valence-band PES study of AgNi1-xCoxO2 reveals that the Ni 3d states are more metallic like than the Co 3d states. (c) 2006 Elsevier B.V. All rights reserved.
- Keywords
- delafossite; PES; XAS; TRANSITION-METAL COMPOUNDS; X-RAY-ABSORPTION; PHOTOEMISSION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23320
- DOI
- 10.1016/j.jmmm.2006.10.864
- ISSN
- 0304-8853
- Article Type
- Article
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 310, no. 2, page. 1620 - 1622, 2007-03
- 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.