Fig. 2. Barocaloric performance of (CH₃–(CH₂)₉)₂NH₂Cl obtained by the quasi-direct method.

a Heat flow curves under variable pressure measured at a temperature rate 1 K/min. b Pressure-dependent phase transition temperature from (a). c Isothermal entropy change ΔS at variable pressure from the pressure-variable entropy curves (Supplementary Fig. S5). d Reversible entropy change ΔS_r by overlapping of pressurization and depressurization from (c). e Adiabatic temperature change ΔT_ad from pressure-variable entropy curves (Supplementary Fig. S7). f Reversible adiabatic temperature change ΔT_r from heating entropy curve at atmosphere pressure and cooling entropy curves under applied pressure.