Elastocaloric response of PbTiO3 predicted from a first-principles   effective Hamiltonian
  A first-principles based effective Hamiltonian is used within a molecular dynamics simulation to study the elastocaloric effect in PbTiO3. It is found that the transition temperature is a linear function of uniaxial tensile stress. Negative temperature change is calculated, when the uniaxial tensile stress is switched off, as a function of initial temperature Delta-T(T_initial). It is predicted that the formation of domain structures under uniaxial tensile stress degrades the effectiveness of the elastocaloric effect. 
Jordan A. Barr, Scott P. Beckman and Takeshi Nishimatsu
cond-mat.mtrl-sci