H-T phase diagram of the metamagnetic transition in $URu_2Si_2$, measured in high d. c. magnetic fields

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20468We have studied the ultrasonic velocity and ac susceptibility of $URu_2Si_2$ in d. c. magnetic fields up to 45T. A significant difference between the constructed H-T phase diagram and that extracted from earlier pulsed fields measurements can be explained in terms of a large magnetocaloric effect. A hysteresis of metamagnetic transition at low temperatures and a new phase separation line have been observed for the first time.8 pages, 4 figuresStrongly Correlated ElectronsH-T phase diagram of the metamagnetic transition in $URu_2Si_2$, measured in high d. c. magnetic fieldstext