Observation of long-range ferromagnetic order in the heavy fermion compound URu1.2Re0.8Si2 by neutron scattering

Torikachvili, M. S.; Rebelsky, L.; Motoya, Kiyoichiro; Shapiro, S. M.; Dalichaouch, Y.; Maple, M. B.

doi:10.1016/0921-4526(90)90142-h

Cited by 9 publications

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“…This logarithmic variation extends down to the ferromagnetic Curie temperature, T C , suggesting that the Kondo behavior survives inside the ferromagnetic phase, implying that the ferromagnetic order and the Kondo behavior do coexist. We would like also to mention UNiSi 2 with a Curie temperature T C = 95 K [12][13][14], UCo 0.6 Ni 0.4 Si 2 with T C = 62 K [15] and URu 2−x Re x Si 2 compounds where T C increases rapidly with concentration x [16][17][18]. The same kind of coexistence has been recently observed in UAsSe with a T C = 109 K [19] and in the neptunium compound NpNiSi 2 , which becomes ferromagnetic at T C = 51.5 K and presents a Kondo behavior [20].…”

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Coexistence of ferromagnetism and Kondo effect in the underscreened Kondo lattice

et al. 2007

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The coexistence of ferromagnetic order and Kondo behavior, that has been experimentally observed in some uranium compounds, is studied in the framework of an underscreened Kondo lattice model within the mean-field approach. For small values of JK compared to the bandwidth, a ferromagnetically ordered solution is obtained, while for larger values of JK a Kondo regime occurs with a Kondo temperature larger than the Curie temperature, suggesting a scenario for the coexistence of Kondo effect and ferromagnetic order.

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