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

被引：86
作者：
Baji, Avinash [1 ]
Mai, Yiu-Wing [1 ]
Li, Qian [2 ]
Liu, Yun [2 ]
机构：
[1] Univ Sydney, CAMT, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
[2] Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2011年 / 71卷 / 11期
基金：
澳大利亚研究理事会;
关键词：
Nano composites; Fibers; Functional composites; Electro-spinning; THIN-FILMS; POLY(VINYLIDENE FLUORIDE); DIELECTRIC BEHAVIOR; NANOCOMPOSITES; NANOFIBERS; MORPHOLOGY;
D O I：
10.1016/j.compscitech.2011.05.017
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
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. (C) 2011 Elsevier Ltd. All rights reserved.
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收藏
页码：1435 / 1440
页数：6
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