Investigation of the magnetic behavior and structural chemistry within the pseudobinary silicide system CeOs x Ru2−x Si2 |
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| Authors: | K. Hiebl C. Horvath P. Rogl M. J. Sienko |
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| Affiliation: | (1) Institut für Physikalische Chemie, Universität Wien, IX., Währingerstrasse 42, A-1090 Wien, Austria;(2) Baker Laboratory of Chemistry, Cornell University, 4853 Ithaca, New York, USA |
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| Abstract: | The crystal chemistry and the magnetism in the pseudobinary system CeOsxRu2–xSi2 has been investigated in the temperature range of 1.5 K to 1,100 K and for various concentrations. From Guinier X-ray powder diffractometry all alloys were found to be isostructural and to crystallize with the ThCr2Si2-type of structure. No significant deviations from the ThCr2Si2-atomic order and symmetry were observed in the as-cast alloys with respect to those heat treated at 1,000°C and at 500°C, quenched. From magnetic susceptibilities it is shown that the 4f-electrons demagnetize at low temperatures. The data were interpreted in terms of interconfiguration fluctuations, based on a model derived by Sales and Wohlleben. A maximum valence change is observed in CeOs1.4Ru0.6Si2, ranging from 3.27 at 700 K to 3.70 at 5 K. |
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