Fig. 1: Comparison of low hydrostatic pressure cooling for selected materials.
From: Large barocaloric effect in intermetallic La1.2Ce0.8Fe11Si2H1.86 materials driven by low pressure
Barocaloric cooling strength defined as the ratio of the adiabatic temperature change to the applied pressure for typical phase-transitioned intermetallics and non metallics: La1.2Ce0.8Fe11Si2H1.86 (this work), Fe49Rh5146, MnCoGeB0.0347, MnCoGe0.99In0.0148, Mn3GaN12, Gd5Si2Ge226, LaFe11.33Co0.47Si1.228, Ni49.26Mn36.08In14.6613, CeSb49, neopentylglycol (marked as NPG)16, natural rubber (marked as NR)21, (NH4)2SO4 (marked as NHSO)19, Rb2KTiOF5 (marked as RbKTiOF)17, (NH4)3MoO3F3 (marked as NHMOF)18, and (NH4)2NbOF5 (marked as NHNbOF)17. Indirectly measured data were from hydrostatic pressure-dependent differential thermal analysis (DTA)12,47 and differential scanning calorimetry (DSC)19,26. The value of ΔTBCE for different materials is obtained from a low pressure of ~1 kbar, at which condition the barocaloric behavior is almost linear with applied pressure.
