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.
引用
收藏
页码：1435 / 1440
页数：6
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