Non-Fermi-liquid behaviour in CeRhSn

Measurements of the temperature T dependence of the electrical resistivity rho, specific heat C and magnetic susceptibility chi have been made on the compound CeRhSn from about 10 K to temperatures as low as 0.1 K. Over certain temperature intervals, these properties are observed to have non-Fermi- liquid (NFL) temperature T dependences: rho proportional to T-epsilon with epsilon approximate to 1.7, C proportional to - T lnT and chi proportional to T-0.5. While the NFL behaviour can be described by the Griffiths - McCoy model, it may also be related to a weak magnetic transition at 6.2 K that depends on atomic disorder. The resistively determined upper critical field versus temperature curve of the isostructural reference compound without f electrons, LaRhSn, is also reported.