Kinetics of magnetization processes in a quasi-one-dimensional Ising superantiferromagnet [{CH3}3NH]CoCl3 · 2H2O

Abstract

The processes of magnetization reversal in a single crystal of CoTAC are investigated in the temperature range 4.2–0.5 K. The relaxation processes as a function of the magnetic field, temperature, and time are studied. It is shown that the results obtained are described within the model of interacting superparamagnetic formations—nanoclusters. The characteristic constants of interaction, the energy of barriers and the size of domains are determined.

Multicritical behavior of the two-dimensional transverse Ising metamagnet in a longitudinal magnetic field

“…On the other hand, through the years, experimental realizations of magnetic materials exhibiting the above characteristics have been studied. For example, Chernyi and co-workers [5] have considered the kinetics of a magnetization process in quasi-one-dimensional Ising su- It is worth mentioning that superfluid mixtures of the two helium isotopes 3 He and 4 He, and a class of anisotropic metamagnets such as FeCl 2 , FeBr 2 and Ni(NO 3 ) 2 · 2H 2 O, although microscopically different at first sight, show in their thermodynamic behavior a striking similarity in that they exhibit a phase diagram in which a line of λ−type transition points (second-order transition line) ends up at a tricritical point (see, for instance, reference [2]).…”

“…On the other hand, through the years, experimental realizations of magnetic materials exhibiting the above characteristics have been studied. For example, Chernyi and co-workers [5] have considered the kinetics of a magnetization process in quasi-one-dimensional Ising su- (second-order transition line) ends up at a tricritical point (see, for instance, reference [2]).…”