Fig. 2: Hysteresis of H2O.
From: Colossal barocaloric effect in GdCl3-doped H2O for sustainable cooling

a after addition of diverse dopants (including monovalence, divalence and trivalence metal ions and insoluble matters) with the same concentration 0.99 wt% and b various mass ratios of GdCl3. Temperature scanning rate is 1 K/min.