XPS and x-ray absorption-edge studies of the surface and bulk valence states of cerium in ceco2

Rao, CNR and Sarma, DD and Sarode, PR and Vijayaraghavan, R and Dhar, SK and Malik, Sk (1981) XPS and x-ray absorption-edge studies of the surface and bulk valence states of cerium in ceco2. In: Journal of Physics C: Solid State Physics, 14 (15). L451-L454.

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Abstract

XPS and LIII X-ray absorption edge studies regarding the valence state of cerium have been carried out on the intermetallic compounds CeCo2, which becomes superconducting at low temperatures. It is observed from XPS that the surface shows both Ce3+ and Ce4+ valence states, while the X-ray absorption edge studies reveal only Ce4+ in the bulk. Thus valence fluctuation and superconductivity do not coexist in the bulk of this compound.

Item Type:	Editorials/Short Communications
Publication:	Journal of Physics C: Solid State Physics
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	08 Feb 2012 09:27
Last Modified:	08 Feb 2012 09:27
URI:	http://eprints.iisc.ac.in/id/eprint/43358

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