Published August 1980
| Version v1
Journal article
Surface effects on Sm valence in amorphous Sm alloys
- 1. Strasbourg-1 Univ., 67 (France)
Description
The results are presented of XPS and X-ray absorption measurements performed on amorphous Sm Au and La Sm Au compounds. The XPS Sm 3dsub(5/2) core level spectra in these compounds reveal that at the surface (5 to 7 A) the samarium ions present both the Sm2+ (4f6) and Sm3+ (4f5) configurations. When the concentration in samarium decreases it is shown that the Sm2+ configuration is strongly enhanced at the surface whereas the X-ray absorption measurements indicate on the contrary that in the bulk only the Sm3+ configuration is present. Comparison is made with similar findings in pure crystalline Sm and various crystalline rare earth compounds. (author)
Additional details
Publishing Information
- Journal Title
- Solid State Commun.
- Journal Volume
- 35
- Journal Issue
- 7
- Series
- Solid State Commun.
- Journal Page Range
- 547-550
- ISSN
- 0038-1098
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 11567062
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION SPECTRA; AMORPHOUS STATE; CATIONS; CHEMICAL COMPOSITION; ELECTRONIC STRUCTURE; ENERGY LEVELS; GOLD ALLOYS; LANTHANUM ALLOYS; PHOTOELECTRON SPECTROSCOPY; SAMARIUM; SAMARIUM ALLOYS; SAMARIUM COMPOUNDS; SURFACES; VALENCE; X RADIATION
- Descriptors DEC
- ALLOYS; CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTS; IONIZING RADIATIONS; IONS; METALS; RADIATIONS; RARE EARTH ALLOYS; RARE EARTH COMPOUNDS; RARE EARTHS; SPECTRA; SPECTROSCOPY; TRANSITION ELEMENT ALLOYS