Temperature Dependence and Magnetic Properties of FePt Nanoparticles via Monte Carlo Simulation

In this paper, we consider this investigation on the FePt alloy, which has recently attracted considerable interest in its magnetic properties. We use the interaction to perform a lattice Monte Carlo simulation of the FePt alloy on a cubic lattice. We investigated the Here in this paper FePt nanoparticles is modeled in the ordered L10 phase using an effective, classical spin Hamiltonian. It was found that If we add the effect of anisotropy constants we can see that the magnetization in systems with higher anisotropy takes more time to reach zero, this might be due to the higher anisotropy constant of system which leads to the higher relaxation times. We also discuss the effect of Monte Carlo steps in magnetization and curie temperature. As the system dimension increases, we would have more spins to flip. And due to their exchange interactions, more spins involve in the Hamiltonian energy.