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Lahiouel R. Pierre J. Siaud E. Galera R. M. Besnus M. J. Kappler J. P. Murani A. P. 《Zeitschrift für Physik B Condensed Matter》1987,67(2):185-191
Magnetic properties, electrical resistivity, specific heat and magnetic excitations have been investigated in Heusler phases CeInAg2–xCux. The hybridization continuously increases from CeInAg2 (antiferromagnetic Kondo lattice) to CeInCu2 (heavy fermion compound). The specific heat coefficient for this last compound is found to reach 1.2 J/mole. K2 at 1.4 K, the Kondo temperature is 6 K and the Wilson ratio is close to 2. 相似文献
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R. Lahiouel R. M. Galera A. P. Murani J. Pierre E. Siaud 《Zeitschrift für Physik B Condensed Matter》1986,62(4):457-462
Magnetic susceptibility, magnetization and parastriction measurements are performed on single crystals of Y1-xCexZn solid solutions. The crystal field splitting and the linewidth of magnetic excitations are measured by inelastic neutron scattering; coupling constantsJn(EF) between 4 electron and conduction band are deduced. Low field susceptibility and parastriction experiments both suggést a 8 ground state. However, the magnetization under high fields and its anisotropy are close to those predicted for a 7 ground state. These contradictions may be attributed to the perturbation of the wave functions of the quartet ground state, due to hybridisation with the conduction band. This occurs since the Kondo temperature is not negligible compared to the crystal field splitting. 相似文献
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