Dynamic magnetic properties and magnetocaloric effect of a bilayer graphdiyne-like nanoribbon

Abstract This study conducts Monte Carlo simulation to investigate the dynamic magnetic, thermodynamic properties and magnetocaloric effect of a bilayer graphdiyne-like nanoribbon described by a ferrimagnetic mixed-spin (1/2, 5/2) two-dimensional Ising model applied in a time-dependent magnetic field. The results show that a strong crystal field can reduce critical temperature T C , and an enhanced exchange coupling can increase T C . Extending the oscillation period of the magnetic field from 50 to 1000 also results in a decline in T C , and the peak value of magnetic entropy change reaches its maximum when the oscillation period is 200. The peak value of adiabatic entropy change − Δ S m fluctuates between 0.061 and 0.0738, and is proportional to the variation range of the external magnetic field. As the range in the amplitude of the oscillating field increases from 0 to 2.0, the − Δ S m peak rises significantly. Phase diagrams between the critical temperature and various parameters were also constructed.