2014/05/06 by A. S. Vdovych, A. P. Moina, Vdovych, A. S. +7 · 1 citation
Computer Science · Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Seismic Imaging and Inversion Techniques #Seismology and Earthquake Studies #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1405.1327
15 pages, 16 figures
arxiv created 2014/05/06 · openalex publication_date 2014/05/06 · arxiv updated 2014/05/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The proton ordering model for the KH2PO4 type ferroelectrics is modified by taking into account non-linear effects, namely, the dependence of the effective dipole moments on the proton ordering parameter. Within the four-particle cluster approximation we calculate the crystal polarization, longitudinal dielectric permittivity, specific heat, and explore the electrocaloric effect. Smearing of the ferroelectric phase transition by the longitudinal electric field is described. A good agreement with experiment is obtained.