Electrocaloric effect in KH<sub>2</sub>PO<sub>4</sub> family crystals
- A.S. Vdovych
- A.P. Moina
- R.R. Levitskii
- I.R. Zachek
Publication date
December 2014
DOI Publisher
Institute for Condensed Matter Physics Journal
Condensed Matter PhysicsAbstract
The proton ordering model for the KH2PO4 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
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