Nanoscale investigation of ferroelectric properties in electrospun barium titanate/polyvinylidene fluoride composite fibers using piezoresponse force microscopy

Avinash Baji, Yiu Wing Mai, Qian Li, Yun Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

88 Citations (Scopus)

Abstract

Ferroelectric nanostructures have broad applications in nanoscale electronic devices, sensors and actuators. In this study, a two-step electrospinning process was used to fabricate barium titanate (BaTiO3)/polyvinylidene fluoride (PVDF) composite fibers. Microstructure examination showed that BaTiO3 fibers were well-dispersed within the PVDF fiber matrix and aligned along the fiber axis. X-ray diffraction (XRD) study revealed that crystalline phases corresponding to both PVDF and BaTiO3 were found. The domain switching and associated ferro-/piezo-electric properties of the BaTiO3-PVDF fibers were characterized. Polarization-electric field hysteresis loops obtained using piezoresponse force microscopy (PFM) confirmed the polar domain switching behavior of the fibers. Distinct strain-electric field hysteresis loops were also recorded. Hence, the fibers exhibited well-defined piezoelectric and ferroelectric properties. The results show the potential of these nanostructured composite fibers for applications in miniaturized electronic devices and sensors.

Original languageEnglish
Pages (from-to)1435-1440
Number of pages6
JournalComposites Science and Technology
Volume71
Issue number11
DOIs
Publication statusPublished - 28 Jul 2011
Externally publishedYes

Keywords

  • A. Fibers
  • A. Functional composites
  • A. Nano composites
  • E. Electro-spinning

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Engineering

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