Electrospun poly(vinylidene fluoride-trifluoroethylene) based flexible magnetoelectric nanofibers
| Autor: | I.B. Dzul-Bautista, Nancy Ornelas-Soto, V. A. González-González, Jon Gutiérrez, J.M. Barandiarán, N. Hernández |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry General Physics and Astronomy 02 engineering and technology Dielectric Coercivity 010402 general chemistry 021001 nanoscience & nanotechnology Magnetic hysteresis 01 natural sciences Ferroelectricity Electrospinning 0104 chemical sciences chemistry.chemical_compound Crystallinity Chemical engineering chemistry Nanofiber Materials Chemistry 0210 nano-technology Bismuth ferrite |
| Zdroj: | European Polymer Journal. 109:336-340 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2018.09.045 |
| Popis: | Flexible multiferroic nanofibers of poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) containing 20% w/w of bismuth ferrite doped with neodymium and cobalt (Nd0.05Bi0.95Fe0.95Co0.05O3) nanoparticles were fabricated by electrospinning. SEM micrographs show well aligned nanofibers with average diameter of 420 nm, X-Ray diffraction revealed R3c crystalline structure corresponding to Nd0.05Bi0.95Fe0.95Co0.05O3 and crystallinity β phase of PVDF-TrFE polymer. FTIR spectra and DSC thermogram were used to investigate the crystallization behavior of PVDF-TrFE and showed pure β phase crystals and high degree of crystallinity. Dielectric measurements determined a low conductivity was found (3 × 10−6–1 × 10−9 S) together with a piezoelectric coefficient of 35 pm/V (−d33) and low permittivity (er = 30–42). Obtained nanofibers displayed a ferromagnetic hysteresis loop, with coercivity of 140 mT and remnant magnetization of 0.580 Am2/kg at room temperature. The coexistence of magnetic hysteresis and ferroelectric properties in Nd0.05Bi0.95Fe0.95Co0.05O3/PVDF-TrFE nanofibers indicates magnetoelectric performance and hint for potential applications on technological devices. |
| Databáze: | OpenAIRE |
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