Abstract :
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 = 1 and S = 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.
