Spin-glass like features in cluster-glass compounds La1-δMn0.7Fe0.3O3

The static and dynamic features of magnetization are investigated using dc magnetization and ac susceptibility measurements on La1-delta Mn0.7Fe0.3O3 for delta = 0 and 0.13. The results indicate that short range ferromagnetic clusters coexist with the glassy magnetic state. The analysis on the frequency dependence of spin freezing temperature (T-f) using the Vogel-Fulcher law and the dynamical scaling behaviour near Tf indicates that the spin freezing temperature behaves like a spin-glass transition temperature for both the compounds. The cluster-glass states of both the compounds exhibit similar characteristic features.