Abstract:
We report on physical properties of the two new iron aluminides YFe2Al10 and YbFe2Al10. They are members of a broader rare-earth based family of intermetallics in which unusual properties have been the subject of considerable recent interest. We argue that in both the title compounds electronic correlations are causing a non-Fermi-liquid ground state, but with different consequences for the ground state. Neither of the compounds are magnetically ordered above 0:4 K, but in YFe2Al10 we find evidence from heat capacity, magnetic susceptibility and 27AlNMR results that point toward a low-temperature ferromagnetic instability which may be driving this compound into ferromagnetic quantum criticality.
DOI: 10.1143/JPSJS.80SA.SA043