| Autor: |
K. B. Garg, D.R. Sánchez, S.K. Gaur, R.K. Singhal, J. Larrea, E. M. Baggio-Saitovitch, S. N. Dolia |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
Journal of Magnetism and Magnetic Materials. 320:25-30 |
| ISSN: |
0304-8853 |
| DOI: |
10.1016/j.jmmm.2007.04.036 |
| Popis: |
The 119 Sn Mossbauer spectra have been measured for the intermediate valent CeSn 3 (stoichiometric) and CeSn 3.1 (slightly non-stoichiometric) high-quality single crystals in the temperature range from 300 to 30 K with an aim to look into the local surrounding of the Sn site and its valence state in these crystals. The spectra clearly indicate a para-magnetic ground state throughout the temperature range. Two different doublets with a quadrupole interaction that we associate with two different paramagnetic S 1 and S 2 sites, result from our first attempt to fit the experimental spectra, the ratio between these sites S 1 /S 2 being around 3/1. The magnitudes of isomer shift reveal a 2+ valence state for the Sn, that does not show any change for either the S 1 or the S 2 sites, in the whole investigated temperature range. The different values of quadrupole splitting Δ E Q for S 1 and S 2 again confirm that the Sn atoms have different atomic coordinations. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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