High temperature ferromagnetism in GdFe2Zn20: large, local moments embedded in the nearly ferromagnetic Fermi liquid compound YFe2Zn20

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dc.creatorJia, S.
dc.creatorBud'ko, S. L.
dc.creatorSamolyuk, G. D.
dc.creatorCanfield, P. C.
dc.date2006-06-23
dc.date2006-10-13
dc.date.accessioned2026-07-07T07:12:50Z
dc.date.available2026-07-07T07:12:50Z
dc.descriptionThe RFe$_2$Zn$_{20}$ series manifests strongly correlated electron behavior for the non-magnetic R = Y member and remarkably high temperature, ferromagnetic ordering ($T_C$ = 86 K) for the local moment bearing R = Gd member (a compound that is less than 5% atomic Gd). In contrast, the isostructural RCo$_2$Zn$_{20}$ series manifests a more typical ordering temperature ($T_N$ = 5.7 K for GdCo$_2$Zn$_{20}$) and YCo$_2$Zn$_{20}$ does not show signs of correlated electron behavior. Studies of R(Fe$_x$Co$_{1-x}$)$_2$Zn$_{20}$ (R = Gd, Y), combined with bandstructure calculations for the end members, reveal that YFe$_2$Zn$_{20}$ is a nearly ferromagnetic Fermi liquid and that the remarkably high $T_C$ associated with GdFe$_2$Zn$_{20}$ is the result of submerging a large local moment into such a highly polarizable matrix. These results indicate that the RFe$_2$Zn$_{20}$ series, and more broadly the RT$_2$Zn$_{20}$ (T = Fe, Co, Ni, Mn, Ru, Rh, Os, Ir, Pt) isostructural family of compounds, offer an exceptionally promising phase space for the study of the interaction between local moment and correlated electron effects near the dilute R limit.
dc.identifierhttps://arxiv.org/abs/cond-mat/0606615
dc.identifierhttp://arxiv.org/abs/cond-mat/0606615
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/112217
dc.subjectStrongly Correlated Electrons
dc.titleHigh temperature ferromagnetism in GdFe2Zn20: large, local moments embedded in the nearly ferromagnetic Fermi liquid compound YFe2Zn20
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