Magnetic properties and magnetocaloric effect of borophene monolayer doped: A Monte Carlo Study

In this work, the magnetic and magnetocaloric properties of a doped borophene monolayer were investigated using Monte Carlo simulations based on the Metropolis algorithm. The system, composed of spin-\(\:1\) boron atoms and spin-\(\:3/2\:\)dopant atoms, was analyzed under varying exchange couplings, anisotropies, and external magnetic fields. Results show that increasing \(\:{J}_{AA}\) enhances the thermal stability of the ferrimagnetic phase and shifts the critical temperature to higher values, while anisotropy modifies the transition behavior. The magnetocaloric response exhibits pronounced entropy change \(\:(-\varDelta\:Sₘ)\) and adiabatic temperature change\(\:\:\varDelta\:{T}_{ad}\) peaks around \(\:{T}_{c}\), whose magnitudes decrease for stronger couplings. Moreover, the relative cooling power (RCP) increases with higher magnetic fields, confirming the system’s efficiency and tunability for nanoscale magnetic refrigeration applications.