AC SUSCEPTIBILITY STUDY OF CE(FE0.9AL0.1)(2)

Linear and non linear AC Susceptibilities have been experimentally inv estigated for Ce(Fe0.9Al0.1)(2). The results suggest that suppression of domain wall motion is responsible for the observed AC Susceptibilit y behaviour. The observed cusp in AC Susceptibility has nothing to do with the cusp observed in SG systems, eventhough there is a coexistenc e of ferromagnetic and antiferromagnetic phases with competing interac tions in the present system. An attempt has been made to explain the d ifferent natures of the AC Susceptibility behaviours for different Al concentrations in the CeFe2 system by comparing with Al (4%) data.