Magnetic and magnetocaloric properties of L-graphdiyne structure: Monte Carlo simulation

Abstract

In this work, using the Monte Carlo study, we illustrated the magnetic and magnetocaloric properties of the L-graphdiyne system with mixed 5/2 and 3/2 spins. We obtain magnetizations and magnetic susceptibilities of the system. The Neel temperature and the reduced compensation temperature are determined. The magnetic entropy changes of L-graphdiyne for several reduced external magnetic fields and the number L of hexagons are displayed. The relative cooling power has been calculated and discussed. Magnetic hysteresis cycles for different L = 1, 2, 3, and T = 2 demonstrate that the magnetization saturation increases with increasing L. In addition, the reduced magnetic coercive field increases with decreasing reduced exchange interaction r. Furthermore, the reduced magnetic coercive field increases with increasing values of the exchange coupling interactions p. In particular, super-paramagnetic behavior has been found for L = 1, due to the low values of the reduced magnetic coercive field.