2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22348Magnetic susceptibility, entropy and specific heat are calculated at the equilibrium points of phase transition to a phase of coexistence of ferromagnetic order and superconductivity in a new class of spin-triplet ferromagnetic superconductors. The results are discussed in view of application to metallic ferromagnets as UGe$_2$, ZrZn$_2$, URhGe.7 pages, 1 fig, LaTex; corrected math. formulaSuperconductivitytext