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2009 | 115 | 1 | 13-17
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Kondo Lattice and Magnetic Properties in Strongly Correlated Electron Systems

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EN
We review here the magnetic properties of some strongly correlated electron systems and especially cerium and uranium compounds. The normal Kondo lattice model with a localized S=1/2 spin can account for the Kondo-magnetism competition observed in cerium or ytterbium systems, while the underscreened Kondo lattice model with a localized S=1 spin can well account for the ferromagnetism - Kondo coexistence observed in some uranium compounds such as UTe. Then, we discuss the spin glass-Kondo competition and present the resulting phase diagrams showing spin glass, Kondo and magnetically ordered phases observed in disordered heavy fermion cerium alloys such as CeNi_xCu_{1-x} alloys.
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  • Laboratoire de Physique des Solides (UMR 8502), CNRS, Université Paris-Sud, 91405 Orsay, France
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bwmeta1.element.bwnjournal-article-appv115n1002kz
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