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

doi:10.1016/j.compscitech.2011.05.017

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

91 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 language	English
Pages (from-to)	1435-1440
Number of pages	6
Journal	Composites Science and Technology
Volume	71
Issue number	11
DOIs	https://doi.org/10.1016/j.compscitech.2011.05.017
Publication status	Published - 28 Jul 2011

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

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.",

keywords = "A. Fibers, A. Functional composites, A. Nano composites, E. Electro-spinning",

author = "Avinash Baji and Mai, {Yiu Wing} and Qian Li and Yun Liu",

year = "2011",

month = jul,

day = "28",

doi = "10.1016/j.compscitech.2011.05.017",

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AU - Baji, Avinash

AU - Mai, Yiu Wing

AU - Li, Qian

AU - Liu, Yun

PY - 2011/7/28

Y1 - 2011/7/28

N2 - 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.

AB - 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.

KW - A. Fibers

KW - A. Functional composites

KW - A. Nano composites

KW - E. Electro-spinning

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DO - 10.1016/j.compscitech.2011.05.017

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EP - 1440

JO - Composites Science and Technology

JF - Composites Science and Technology

IS - 11

ER -

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

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