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Phase transitions and polarization switching in quasi-one-dimensional organic ferroelectrics of the phenyltetrazole family

A. P. Moina*

  • *Contact author: alla@icmp.lviv.ua
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Phys. Rev. B 112, 214111 – Published 15 December, 2025

DOI: https://doi.org/10.1103/cf7x-szr4

Abstract

Pseudospin models are proposed for the description of the phase transitions, dielectric characteristics, and polarization switching in two crystals of the phenyltetrazole family. One of them, APHTZ, is a canted ferroelectric, whereas the other, MPHTZ is a simple antiferroelectric. In APHTZ, the electric field, applied perpendicularly to the axis of spontaneous polarization, flips the polarization in one of the two sublattices, effectively rotating the nonzero net polarization by 90∘ and switching the system between two different ferroelectric configurations. The temperature-electric field phase diagrams are constructed. The diagram topology appears to be typical for the Ising-like antiferroelectric systems.

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Phys. Rev. B 112, 214111– Published 15 December, 2025
  • Received 30 September 2025
  • Revised 23 November 2025
  • Accepted 25 November 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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