Monte Carlo study of the magnetic behavior of a mixed spin (1, 3/2) ferrimagnetic nanoparticle

The Monte Carlo simulation technique has been used to study the magnetic behavior of a ferrimagnetic spherical nanoparticle on a simple cubic lattice. The particle is formed by alternate layers of spins σ=1σ=1 and S=3/2S=3/2. The interlayer coupling is antiferromagnetic. The influences of the crystal fields, and the exchange couplings, on the critical and compensation behavior of the nanoparticle, are investigated. The results present rich critical behavior, which includes the first- and second-order phase transitions, thus also the tricritical and critical end points. It is also found that the compensation point can appear for appropriate values of the system parameters.

► The magnetic behavior of an Ising ferrimagnetic nanoparticle has been studied by Monte Carlo simulation.
► The effects of the crystal fields on the phase diagrams have been examined.
► The thermal variations of magnetizations have been investigated.
► The compensation point can appear for appropriate values of the system parameters.
► The dependence of the total susceptibility on the temperature is investigated.