Electric field induced polarization rotation in squaric acid crystals revisited

Abstract

Using the previously developed model we revisit the problem of the electric field induced polarization rotation in antiferroelectric crystals of squaric acid. We test an alternative set of the model parameters, according to which the dipole moments associated with the H${}_2$C${}_4$O${}_4$ groups are assumed to be parallel to the diagonals of the $ac$ plane. The $T$-$E$ phase diagrams and the polarization curves $P(E)$ for the fields directed along the $a$ axis and along one of the diagonals are considered. Comparison of the theoretical results with the newly published experimental data confirm the validity of the model. The calculations reveal no apparent advantage of the new set of the parameters over the previously used set.

9 pages, 4 figures, 1 table. arXiv admin note: text overlap with arXiv:2112.09942

References in corpus (2)

• Polarization rotation by external electric field in two-dimensional antiferroelectric squaric acid, H${}_2$C${}_4$O${}_4$
• Influence of external field direction on polarization rotation in antiferroelectric squaric acid H${}_2$C${}_4$O${}_4$

Cited by in corpus (1)

• Negative/positive electrocaloric effect in antiferroelectric squaric acid