Linking Three-Dimensional Morphology to Piezoelectric Response in P(VDF-TrFE)
Abstract
Synchrotron small-angle and wide-angle X-ray scattering (SAXS/WAXS) puts in evidence a hierarchical organization of ferroelectric poly(vinylidene fluoride–trifluoroethylene) [P(VDF–TrFE)] that rationalizes its anisotropic piezoelectric response. The material is organized into stacks with a periodicity of ∼60 nm along the c-axis. These stacks consist of grains separated by isotropic amorphous (IA) regions. After poling, the grains separated by 1.5 nm IA regions along the a-axis are composed of crystalline or ordered amorphous (OA) domains, with characteristic sizes of ∼16 nm along the a-axis and ∼22 nm along the c-axis. Complementary Raman scattering puts in evidence that the OA phase has an all-trans conformation with a lower density than the crystalline one. Ferroelectric domains connected along the b-axis give rise to a large d33 piezoelectric coefficient. An analytical elastic model allows linking successfully the local piezoelectric coefficients to the macroscopic ones.
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BibTeX
@article{revenant2026linking,
title = {{Linking Three-Dimensional Morphology to Piezoelectric Response in P(VDF-TrFE)}},
author = {Christine Revenant and Simon Toinet and Joseph Faudou and Gilbert André Chahine and Isabelle Morfin and Raphaël Ramos and Mohammed Benwadih},
journal = {Macromolecules},
year = {2026},
month = aug,
doi = {10.1021/acs.macromol.6c01400},
url = {https://hal.science/hal-05758870v1},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Linking Three-Dimensional Morphology to Piezoelectric Response in P(VDF-TrFE)
AU - Christine Revenant
AU - Simon Toinet
AU - Joseph Faudou
AU - Gilbert André Chahine
AU - Isabelle Morfin
AU - Raphaël Ramos
AU - Mohammed Benwadih
PY - 2026
DA - 2026/08/28
JO - Macromolecules
DO - 10.1021/acs.macromol.6c01400
UR - https://hal.science/hal-05758870v1
AB - Synchrotron small-angle and wide-angle X-ray scattering (SAXS/WAXS) puts in evidence a hierarchical organization of ferroelectric poly(vinylidene fluoride–trifluoroethylene) [P(VDF–TrFE)] that rationalizes its anisotropic piezoelectric response. The material is organized into stacks with a periodicity of ∼60 nm along the c-axis. These stacks consist of grains separated by isotropic amorphous (IA) regions. After poling, the grains separated by 1.5 nm IA regions along the a-axis are composed of crystalline or ordered amorphous (OA) domains, with characteristic sizes of ∼16 nm along the a-axis and ∼22 nm along the c-axis. Complementary Raman scattering puts in evidence that the OA phase has an all-trans conformation with a lower density than the crystalline one. Ferroelectric domains connected along the b-axis give rise to a large d33 piezoelectric coefficient. An analytical elastic model allows linking successfully the local piezoelectric coefficients to the macroscopic ones.
SN - 0024-9297
SN - 1520-5835
ER -