Tunable polarization components and electric field induced crystallization in polyvinylidenefluoride: A piezo polymer

Ganguly, Ronit and Bandyopadhyay, Soumya and Miriyala, Kumaraswamy and Gunasekaran, Vijayabhaskar and Bhattacharya, Saswata and Acharyya, Amit and Ramadurai, Ranjit (2018) Tunable polarization components and electric field induced crystallization in polyvinylidenefluoride: A piezo polymer. Polymer Crystallization. e10027. ISSN 2573-7619

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Polyvinylidenefluoride (PVDF) a semicrystalline pieozoelectric polymer was synthesized with varying process conditions and its ferroelectric domain orientations were studied using piezoresponse force microscope (PFM). PVDF thin films fabricated using tape casting technique with precursor solutions of varying viscosities reveal that the polarization components transform from a dominant planar to an out‐of‐plane configuration with increase in viscosity. Interestingly the planar components possessed a head to head or tail to tail kind of paired domains separated by a distance of ~ 380‐400 nm. Electrostatic energy minimization of an electrically inhomogeneous system containing similar domain arrangements as the experiments shows that the head to head and tail to tail arrangements with a minimum separation distance are more favorable than head to tail arrangements of domains. With increment of applied field, the domains grew in size and shape indicating amorphous to crystalline transformation of PVDF films. Such transformation was evident from X‐ray diffraction studies performed in‐situ in the presence of an applied electric field.

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IITH Creators:
IITH CreatorsORCiD
Acharyya, Amithttp://orcid.org/0000-0002-5636-0676
Ramadurai, Ranjithttp://orcid.org/0000-0003-2991-0027
Item Type: Article
Subjects: Electrical Engineering
Divisions: Department of Material Science Engineering
Depositing User: Team Library
Date Deposited: 08 Nov 2018 04:32
Last Modified: 08 Nov 2018 04:32
URI: http://raiith.iith.ac.in/id/eprint/4521
Publisher URL: http://doi.org/10.1002/pcr2.10027
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