XPS and X-ray absorption edge studies of the surface and bulk valence states of cerium in CeCo2

Cnr Rao; D. D. Sarma; P. R. Sarode; R. Vijayaraghavan; S. K. Dhar; S.K. Malik

doi:10.1088/0022-3719/14/15/005

XPS and X-ray absorption edge studies of the surface and bulk valence states of cerium in CeCo2

Journal of Physics C Solid State Physics 14(15): L451-L454

Article 1981 English

Abstract

1 min read

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.

Related publications

Article1980

Valence fluctuation in some Yb intermetallics by X-ray photoemission and X-ray absorption

Cnr Rao, D. D. Sarma, P. R. Sarode, E. V. Sampathkumaran, L.C. Gupta, R. Vijayaraghavan

Chemical Physics Letters

Article1982

LIIIabsorption edge studies of mixed valent cerium intermetallics and related systems

P. R. Sarode, D. D. Sarma, R. Vijayaraghavan, S.K. Malik, Cnr Rao

Journal of Physics C Solid State Physics

Article1981

X-ray absorption spectroscopic study of the mixed valence system CePd3

P. R. Sarode, D. D. Sarma, Cnr Rao, E. V. Sampathkumaran, L.C. Gupta, R. Vijayaraghavan

Materials Research Bulletin

Article1990

VALENCE STATES OF BISMUTH AND THALLIUM IN SUPERCONDUCTING CUPRATES: A Bi–L3 AND Tl–L3 X-RAY ABSORPTION SPECTROSCOPIC STUDY

V. Vijayakrishnan, Giridhar U. Kulkarni, Cnr Rao

Modern Physics Letters B

Article1989

Nature of Pb in superconducting cuprates containing lead: A Pb L3 x-ray absorption near-edge spectroscopy study

Giridhar U. Kulkarni, Gopinathan Sankar, Cnr Rao

Applied Physics Letters

XPS and X-ray absorption edge studies of the surface and bulk valence states of cerium in CeCo<sub>2</sub>

Abstract

Discussion(0)

Related publications

Valence fluctuation in some Yb intermetallics by X-ray photoemission and X-ray absorption

L<sub>III</sub>absorption edge studies of mixed valent cerium intermetallics and related systems

X-ray absorption spectroscopic study of the mixed valence system CePd3

VALENCE STATES OF BISMUTH AND THALLIUM IN SUPERCONDUCTING CUPRATES: A <font>Bi</font>–<font>L</font><sub>3</sub> AND <font>Tl</font>–<font>L</font><sub>3</sub> X-RAY ABSORPTION SPECTROSCOPIC STUDY

Nature of Pb in superconducting cuprates containing lead: A Pb <i>L</i>3 x-ray absorption near-edge spectroscopy study