Monte Carlo study of an Ising nanoisland with bilayer graphene-like structure in a longitudinal magnetic field

In this work, we have investigated a ferrimagnetic mixed-spin (2, 5/2) Ising nanoisland with bilayer graphene-like structure within the framework of Monte Carlo simulation. The unique magnetic and thermodynamic behaviors of the system have been revealed under the effects of the Hamiltonian parameters and temperature. We obtain the phase diagrams of the blocking temperatures and discontinuous points. For certain parameters, there are rich multiple-cycle hysteresis behaviors, which is caused by competition among various Hamiltonian parameters. Some results obtained can be compared with other theoretical and experimental studies.