We have performed self-consistent spin-polarized calculations for ${\mathrm{Fe}}_3$Pt (which crystallizes in the ${\mathrm{Cu}}_3$Au structure) at various Wigner-Seitz radii using the linear muffin-tin orbital atomic sphere approximation method. The average magnetic moment obtained at equilibrium lattice constant (1.99${\mathrm{\mu }}_{\mathit{B}}$) is close to the experimental value (2.15${\mathrm{\mu }}_{\mathit{B}}$). We have calculated the Curie temperature of this compound at various Wigner-Seitz radii, using the model proposed by Mohn and Wohlfarth. The quantities which are obtainable from the band-structure calculations are the only requisite for this model. The variation of the Curie temperature with Wigner-Seitz radii, i.e., with pressure, ${\mathit{T}}_{\mathit{C}}$(P) is then compared with the experimental data.

• Received 7 August 1995

DOI:https://doi.org/10.1103/PhysRevB.52.13471