Magnetic properties and Cluster-glass phenomena in 1-D spin chain compound Ca3-xDyx

Memory and rejuvenation effect on the cluster-glass phase of 1-D spin-chain compound Ca3Co2–xBixO6

“…Similar to the parent compound, the magnetization for x = 0.2 sample starts rising below 22 K. The curve changes its behavior for low-temperature, i.e., the sharp peak in the ZFC curves for x = 0 sample broadens for x = 0.2 sample and shifts towards higher temperature. In the earlier study for the parent compound, the sudden increase in the magnetization below 25 K (T c1 ) is a transition from paramagnetic to partially disordered antiferromagnetic state [3], and the cusp at 9.1 K (T c2 ) has a place on spin-cluster-glass [3]. The transition temperature T c1 and T c2 were determined from dM/dT vs. T plot.…”

“…The crystal structure of Ca 3 Co 2 O 6 consists of an infinite number of chains of alternating face-sharing CoO 6 octahedral (Co1) and CoO 6 trigonal prisms (Co2), which are running along the c-axis. It possesses an Ising-like character with spin parallel to the chains, while the intrachain and inter-chain coupling are ferromagnetic and antiferromagnetic, respectively, which give rise to geometric frustration and unusual magnetic behavior [3,4].…”