Within Monte Carlo simulation in conjunction with the Metropolis method was used to investigate the magnetocaloric effect in the promising a two-layer system made up of spin \({S}_{{\text{a}}}\) and spin \({S}_{{\text{b}}}\) and having an AABB structure was characterized. The behavior of the isothermal magnetic entropy, the adiabatic temperature change is obtained, the relative cooling power was determined for the two-layer systems consisting of spins evaluated by \({S}_{a}\) and \({S}_{b}\) in each layer taking values in the rang (3/2,2,5/2,3,7/2). In recent years, the experimental behavior of double peaks for bilayer systems theoretically has been established, and an explanation is provided. Aside from that, the conditions that led to the change in behavior from double peak to single peak were gathered and examined. The relationship between spin value and isothermal magnetic entropy also the magnitude of the exchange contact between two layers was discovered. This article provides an updated view.
