2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26104The specific heat, heat flux (DTA trace) and dielectric constant of KDP ferroelectric crystal have been measured simultaneously for various electric fields with a conduction calorimeter. The specific heat presents a strong anomaly but these simultaneous measurements allow us to evaluate the latent heat accurately. Latent heat decreases with field and the value of critical electric field --that where latent heat disappears-- is estimated to be (0.44\pm0.03) kV/cm. Incidentally, we have measured simultaneously the dielectric permittivity which suggests that latent heat is developed as domains are growing.7 pages, 6 figures, ReVTeX, twocolumn format, to appear in J. Phys. Cond. MatterOther Condensed Mattertext