Magnetic properties in different fullerenes Xn nano-structures: Monte Carlo study

The aim of this work is to study the magnetic properties in deferent fullerenes Xn like nano-structures, where the symbol X can be assigned to any magnetic atom and “n” is the number of these magnetic atoms. Our study is based on the fullerenes: C20, C60 and C70, formed by atoms with mixed spins σ = 1 and S = 1/2. We focus our interest on the examination of the influence of the coupling exchange interactions between atoms, the external magnetic and the crystal fields. Also, we present and discuss the nature of the corresponding ground state phase diagrams. The effect of the compensation and critical temperatures is also presented for different magnetization profiles by using the Monte Carlo simulations. The behavior of the total magnetizations as a function of the physical system parameters is also analyzed and discussed, in this study.