RELAXATION PHENOMENA IN THE CLUSTER-GLASS PHASE OF ITINERANT MAGNETICMATERIAL OF FEXTIS2 CRYSTALS

Field-cooled thermoremanent magnetization (TRM) in the cluster-glass p hase of FexTiS2 (x = 1/4, T-g = 53 K) using the anomalous Hall effect have been measured over the cooling-field range H-FC = 0.005-0.14 T, t emperature range 12-40 K below T-g, and time range 10(-1)-10(4) s with the waiting time t(w) = 180-18000 s. The observed decay curves of TRM over the wide time span can be represented by theoretical expressions based on an existing domain model. Discussion is given for the differ ence in the dynamical parameters between the cluster- and spin-glass p hases of the intercalation compound, such as the minimum relaxation ti me t(0) in the equilibrium relaxation spectrum, the domain growth rate t(2), and the time-dependent maximum relaxation time tau(max)(t) char acterizing the non-equilibrium relaxation.