Speaker
Description
Ca$_{3}$Co$_{2}$O$_{6}$ is a frustrated Ising-like magnet with uniaxial anisotropy along its crystallographic c-axis. Magnetic field applied along this axis induces metamagnetic transition with occurrence of a magnetization plateau at ⅓ of maximum magnetization. We aim to understand the dynamics of this transition using bulk and microscopic methods and eliminate compound specific features to identify universal aspects behind them.
Magnetization was measured on several samples as function of magnetic field at different temperatures to compare metamagnetic phase transitions in positive, negative and zero field regions, and AC susceptibility to study their frequency dependence, and determine average size and distribution of magnetic clusters. Maximum d$M$/d$H$ calculated from the magnetization measurements were not reflected in $\chi_{\rm AC}$ indicating complex size-dependence of oscillating clusters.
