Crystal field effect on the magneto caloric properties of the mixed spin-7/2 and spin-3/2 3D-ising ferrimagnet: A Monte Carlo simulation

Ferromagnetic vanadium disulfide VS2monolayers with high Curie temperature and high spin polarization

“…It is worth noting that the simple 2D Ising model can hardly meet our exploration of the magnetic and thermal properties of complex systems. Therefore, we here use the extended 2D Ising model 35–39 to conduct relevant simulations. In this framework, the Hamiltonian of the VS 2 monolayer can be expressed as: , where J represents the nearest-neighboring exchange coupling in the layer, D represents the crystal field for sublattice V, and h is the external longitudinal magnetic field.…”

“…It is worth noting that the simple 2D Ising model can hardly meet our exploration of the magnetic and thermal properties of complex systems. Therefore, we here use the extended 2D Ising model [35][36][37][38][39] to conduct relevant simulations. In this framework, the Hamiltonian of the VS 2 monolayer can be expressed as:…”

Electronic structure and magnetothermal properties of two-dimensional ScCl

“…50 Considering the structural characteristics of monolayer ScCl, the 2D periodic boundary conditions were adopted and 1 × 10 6 iterations were calculated for each spin flip in a 30 × 30 × 1 supercell. In addition, based on the 2D Ising model, 51–54 the Hamiltonian of monolayer ScCl can be expressed as follows: where J represents the exchange coupling between the nearest magnetic atoms (Sc), D represents the magnetocrystalline anisotropy of the monolayer ScCl, and h represents the longitudinal magnetic field intensity exerted on the system. S z i in the formula represents the spin value projection of the i th magnetic atom along the z direction, where the projected values are discrete ( S z i = ±1/2).…”

“…50 Considering the structural characteristics of monolayer ScCl, the 2D periodic boundary conditions were adopted and 1 Â 10 6 iterations were calculated for each spin flip in a 30 Â 30 Â 1 supercell. In addition, based on the 2D Ising model, [51][52][53][54] the Hamiltonian of monolayer ScCl can be expressed as follows:…”