Magnetic properties of the mixed spin 1/2 and spin 1 hexagonal nanotube system: Monte Carlo simulation study

In order to study the magnetic properties of a mixed spin 1/2 Ising model and spin 1 Blume-Capel model in a hexagonal nanotube two layers system, we carried out a Monte Carlo simulation with the Metropolis algorithm. By means of the magnetic susceptibility curves, the phase diagram for a finite size lattice is obtained. In association with previous analytic results, an uncommon increase in the magnetization with temperature is described by the existence of an unstable state with a non-zero order parameter.