Electrocaloric effect in KH${}_2$PO${}_4$ family crystals

Abstract

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.

10 pages, 6 figures; this article is a shortened version of arXiv:1405.1327 published in Condensed Matter Physics

References in corpus (1)

• Giant electrocaloric effect around T${}_c$