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Gorbunov AV, Putzeys T, Urbanavičiūtė I, et al. True ferroelectric switching in thin films of trialkylbenzene-1,3,5-tricarboxamide (BTA). Phys Chem Chem Phys. 2016;18(34):23663-72doi: 10.1039/c6cp03835b.
Gorbunov, A. V., Putzeys, T., Urbanavičiūtė, I., Janssen, R. A., Wübbenhorst, M., Sijbesma, R. P., & Kemerink, M. (2016). True ferroelectric switching in thin films of trialkylbenzene-1,3,5-tricarboxamide (BTA). Physical chemistry chemical physics : PCCP, 18(34), 23663-72. https://doi.org/10.1039/c6cp03835b
Gorbunov, A V, et al. "True ferroelectric switching in thin films of trialkylbenzene-1,3,5-tricarboxamide (BTA)." Physical chemistry chemical physics : PCCP vol. 18,34 (2016): 23663-72. doi: https://doi.org/10.1039/c6cp03835b
Gorbunov AV, Putzeys T, Urbanavičiūtė I, Janssen RA, Wübbenhorst M, Sijbesma RP, Kemerink M. True ferroelectric switching in thin films of trialkylbenzene-1,3,5-tricarboxamide (BTA). Phys Chem Chem Phys. 2016 Aug 24;18(34):23663-72. doi: 10.1039/c6cp03835b. PMID: 27510767.
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Phys Chem Chem Phys. 2016 Aug 24;18(34):23663-72. doi: 10.1039/c6cp03835b.

True ferroelectric switching in thin films of trialkylbenzene-1,3,5-tricarboxamide (BTA).

Physical chemistry chemical physics : PCCP

A V Gorbunov, T Putzeys, I Urbanavičiūtė, R A J Janssen, M Wübbenhorst, R P Sijbesma, M Kemerink

Affiliations

  1. Department of Applied Physics, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
  2. Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee, Belgium.
  3. Complex Materials and Devices, Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden. [email protected].
  4. Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands.
  5. Department of Applied Physics, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands and Complex Materials and Devices, Department of Physics, Chemistry and Biology (IFM), Linköping University, 58183 Linköping, Sweden. [email protected].

PMID: 27510767 DOI: 10.1039/c6cp03835b

Abstract

We have investigated the ferroelectric polarization switching properties of trialkylbenzene-1,3,5-tricarboxamide (BTA), which is a model system for a large class of novel organic ferroelectric materials. In the solid state BTAs form a liquid crystalline columnar hexagonal phase that provides long range order that was previously shown to give rise to hysteretic dipolar switching. In this work the nature of the polar switching process is investigated by a combination of dielectric relaxation spectroscopy, depth-resolved pyroelectric response measurements, and classical frequency- and time-dependent electrical switching. We show that BTAs, when brought in a homeotropically aligned hexagonal liquid crystalline phase, are truly ferroelectric. Analysis of the transient switching behavior suggests that the ferroelectric switching is limited by a highly dispersive nucleation process, giving rise to a wide distribution of switching times.

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