Modeling of Magnetic and Magnetocaloric Properties by the Molecular Mean Field Theory in La0.6Sr0.4Mn0.9V0.1O3 Oxide

Study of the structural, electronic, magnetic and magnetocaloric properties of La0.5Ca0.5Mn0.9V0.1O3 sample: first-principles calculation (DFT–MFT)

“…Due to the effect of the crystal field, for transition metals, the orbital moment ( L ) is blocked ( L = 0). 34 Only the spin moments of ions of manganese (Mn 3+ , Mn 4+ ) are responsible for the magnetism in the compound. Therefore, the total moment J was calculated as J = 0.6 S(Mn 3+ ) + 0.3 S(Mn 4+ ) + 0.1 S(V 5+ ) = 1.65, and the Lande factor was g = 0.6 g (Mn 3+ ) + 0.3 g (Mn 4+ ) + 0.1 g (V 4+ ) = 1.9 where S Mn 3+ = 2, S Mn 4+ = 1.5, S V 5+ = 0, g (Mn 3+ ) = 2, g (Mn 4+ ) = 2 and g (V 5+ ) = 1.…”

“…It is remarked that all magnetization isotherms are reduced in a single curve, which has been adjusted using eqn (1) under the MATLAB soware to extract the experimental M S , J, and g values. 15,34 The obtained values are summarized in Table 3.…”