Electrocaloric effect in KH_{2}PO_{4} family crystals

Vdovych, Moina, Levitskii, Zachek
2014 Condensed Matter Physics  
The proton ordering model for the KH$_{2}$PO$_{4}$ type ferroelectrics is modified by taking into account the dependence of the effective dipole moments on the proton ordering parameter. Within the four-particle cluster approximation we calculate the crystal polarization and explore the electrocaloric effect. Smearing of the ferroelectric phase transition by a longitudinal electric field is described. A good agreement with experiment is obtained.
doi:10.5488/cmp.17.43703 fatcat:l6upysy6nvhxlhfh6yump7gffa