Magnetocaloric Effect, Electronic and Magnetic Properties in Manganite Perovskites

The study conducted on PrSrMnO perovskite involved the utilization of first principal calculations and Monte Carlo simulations to investigate its magnetocaloric effect, electronic properties, and magnetic properties. First, the electronic and magnetic properties were determined by treating the exchange–correlation potential with the generalized gradient approximation. It was found that PrSrMnO perovskite exhibits ferromagnetic behaviour and possesses a half-metallic nature with 100% spin polarization. This characteristic is significant in relation to the compound’s colossal magnetoresistance properties. Furthermore, the magnetic moment and the thermal variation of magnetization of PrSrMnO perovskite were obtained through the first principal calculations. These calculations provide valuable insights into the material’s magnetic behaviour and how it changes with temperature. To study the temperature dependence of the magnetic entropy change and the adiabatic temperature, Monte Carlo simulations were employed. These simulations allow for the investigation of the thermodynamic properties of the material, such as its response to changes in temperature and magnetic field. Based on the Monte Carlo simulations, the Curie temperature, which represents the temperature at which the material transitions from a ferromagnetic to a paramagnetic state, was deduced. Additionally, the field dependence of the relative cooling power, a measure of the material’s efficiency in magnetic refrigeration applications, was determined. In summary, the combination of first principal calculations and Monte Carlo simulations provided valuable insights into the magnetocaloric effect, electronic properties, and magnetic properties of PrSrMnO perovskite, including its half-metallic nature, Curie temperature, and field dependence of relative cooling power.