Relaxation phenomena of remanent magnetizations in spin- and cluster-glasses of itinerant magnetic FexTiS2 crystals studied by Hall effect

Relaxation phenomena of isothermal remanent magnetization (IRM) and field-cooled thermoremanent magnetization (TRM) in spin- and cluster-glass phases of intercalation compound FexTiS2 have been studied using the anomalous Hall effect. After an applied magnetic field is switched off, the time decay of Hall resistivity (or remanent magnetization) follows a power law of the form rho(H)(t) = At--m where A is a constant and m an exponent. In both IRM and TRM, the exponent m depends appreciably on the applied magnetic field intensity and temperature, for which we have obtained a universal relationship with a newly introduced quantity of ''relative relaxed magnetization''.