Magnetic characteristics of a ferromagnetic VI3-like bilayer

The mean-field approximation has been used to study the magnetic properties and critical behavior of a ferromagnetic VI${}_3$-like bilayer within the framework of a spin-1 Ising-type model. The influences of specific physical parameters, namely the interlayer exchange interaction $J_{int}$ and the crystal field $D$, on the system’s magnetization and susceptibility have been highlighted and examined. Various phase diagrams have been plotted and discussed in the ($J_{int}$, temperature) and ($D$, temperature) planes. This study yielded some intriguing results, including second- and first-order phase transitions and tricritical behavior. Lastly, the impacts of the external magnetic field and the crystal field on the system’s blocking temperature have been explored under certain physical conditions. The findings of this study may contribute to the development of VI${}_3$-based spintronic technologies.