Theoretical investigation of rotating magnetocaloric effect in PrRu2

The magnetic anisotropy in the cubic ferromagnetic PrRu ₂ compound (T _C = 34 K) is due to the crystalline electrical field interaction. Using a model Hamiltonian which includes the crystalline electrical field, exchange and Zeeman interactions we calculated the rotating magnetocaloric effect, considering the magnetic field changes along the three main cubic crystallographic directions 〈0 0 1〉, 〈0 1 1〉 and 〈1 1 1〉. The influence of the spin reorientation, along the field directions, on the magnetocaloric potentials were quantitatively obtained and discussed.