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On the magnetic and valence properties of Ce---Mg---Y compounds |
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| Authors: | H. Flandorfer A. Kostikas P. Rogl C. Godart M. Giovannini A. Saccone R. Ferro |
| Affiliation: | a Institut für Physikalische Chemie, Universität Wien, Währingerstraße 42, A-1090, Wien, Austria b Institute of Materials Science, NCSR, Demokritos, Aghia Paraskevi, Gr-15310, Athens, Greece c CNRS, UPR 209, P.. A. Briand, 92195, Meudon, France d CNRS, LURE, University of Paris Sud, 91405, Orsay, France e Istituto di Chimica Generale, Università di Genova, Viale Benedeno XV, 3, I-16123, Genova, Italy |
| Abstract: | The structural and magnetic properties of a series of novel compounds in the ternary Ce---Mg---Y system have been studied by X-ray diffraction. SQUID magnetometry and XAS spectroscopy. The crystal structures of the compounds Ce0.34Y0.67Mg2 and Ce0.49Y0.51Mg4.7 have been refined by the Rietveld technique. Magnetic data are consistent with a tripositive ground state 2F5/2 for the cerium atom. The XAS measurements confirm this result. Crystal field effects are apparent in the magnetic data at temperatures below about 50 K in the compounds with higher Ce concentration. |
| Keywords: | Ce---Mg---Y compounds Magnetism X-ray absorption Solid solutions Rietveld refinements |
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