Abstract
We report the structural and magnetic properties of Ca3-xDyxCo2O6 (x = 0, 0.1, 0.2, and 0.3). We found evidence of Cluster-glass (CG)-like freezing phenomena in these samples. The isothermal magnetization curve depicts step-like change indicative of the first-order transition, which decreases with the increase of substitution. The Brillouin function was used to determine the ‘spins’, participating at this first-order transition J12→J32. Relaxation measurements revealed the existence of short-range Cluster-glass-like behavior. Analyzing the results using Vogel-Fulcher law shows that the Vogel-Fulcher temperature (T0) and the relaxation time is around 10 K and 104 s, respectively.
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