Tuning the magnetic anisotropy, Curie temperature, and Dzyaloshinskii–Moriya interaction in the FeCl₂ monolayer

The emergence of magnetic ordering in two-dimensional materials offers unique opportunities for developing novel spintronics devices. However, these materials suffer from low magnetic critical temperature, in-plane anisotropy, and low magnetic anisotropy energy.<br/>We will discuss a strategy for the ferromagnetic FeCl₂ monolayer (based on first-principles and Monte Carlo simulations) to enhance the <b>Curie temperature</b> to above room temperature and enhance the <b>magnetic anisotropy</b> energy by nearly three orders of magnitude, which is<br/>essential for sustaining long-range magnetic ordering. In addition, we find a <b>non-polar (1T)</b> to <b>polar (1H)</b> structural phase transition and induced <b>Dzyaloshinskii–Moriya</b> interaction, which is crucial for generating chiral magnetic structures such as skyrmions.