Abstract
Abstract In this paper, we study the magnetic properties of a bi-layer graphyne structure with RKKY (Ruderman-Kittel-Kasuya-Yoshida) interaction. The system is composed by two magnetic layers with mixed spins σ = 3/2 and S = 1, separated by (L) non-magnetic ones. Firstly, the ground state phase diagrams are reported and discussed. Then we use the Monte Carlo simulations in order to determine the effect of the RKKY interaction on the system magnetic properties. We find that the transition temperature increases when decreasing the number of non-magnetic layers. This result is confirmed by the displacement of the peak of susceptibility towards the high temperatures. Furthermore, the variation of the total magnetization versus the crystal field remains independent of the parameter L when this one is greater than or equal to three. Besides, the hysteresis loop stays invariable for L ≥ 2.
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