Significant enhancement of dielectric permittivity and percolation behaviour of La2-: XSrxNiO4/poly(vinylidene fluoride) composites with different Sr doping concentrations. Meeporn, K.; Chanlek, N.; and Thongbai, P. RSC Advances, 10(5):2747-2756, 2020. cited By 0
Significant enhancement of dielectric permittivity and percolation behaviour of La2-: XSrxNiO4/poly(vinylidene fluoride) composites with different Sr doping concentrations [link]Paper  doi  abstract   bibtex   
The percolation behaviour and dielectric properties of La2-xSrxNiO4 (LSNO)/poly(vinylidene fluoride) (PVDF) composites with different Sr doping concentrations were investigated. The semiconducting LSNO filler particles with x = 0.2 (LSNO-1) and x = 0.4 (LSNO-2) were prepared using a chemical combustion method. The microstructures, thermal properties, and phase compositions of the polymer composites and filler particles were systematically investigated. The conductivity of the LSNO fillers increased with the Sr content and had an important impact on the dielectric properties of the LSNO/PVDF composites. The percolation threshold of the LSNO-2/PVDF composite was lower than that of the LSNO-1/PVDF composite. An ultra-high dielectric permittivity (ϵ′) of 3384.7 (at 1 kHz and room temperature), which was approximately 340 times higher than that of pure PVDF, was obtained for the LSNO-2/PVDF composite with a filler volume fraction of 25 vol%. The enhanced dielectric properties were attributed to interfacial polarisation at the semiconductor-insulator interface, a micro-capacitor model, and the intrinsically remarkable dielectric properties of the LSNO ceramic. © 2020 The Royal Society of Chemistry.
@ARTICLE{Meeporn20202747,
author={Meeporn, K. and Chanlek, N. and Thongbai, P.},
title={Significant enhancement of dielectric permittivity and percolation behaviour of La2-: XSrxNiO4/poly(vinylidene fluoride) composites with different Sr doping concentrations},
journal={RSC Advances},
year={2020},
volume={10},
number={5},
pages={2747-2756},
doi={10.1039/c9ra09719h},
note={cited By 0},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078437261&doi=10.1039%2fc9ra09719h&partnerID=40&md5=1e5d8b35e2a3c810eea072dcf15e9ed3},
affiliation={Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand; Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang District, Nakhon Ratchasima, 30000, Thailand; Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand; Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), NANOTEC-KKU RNN on Nanomaterials Research and Innovation for Energy, Khon Kaen University, Khon Kaen, 40002, Thailand},
abstract={The percolation behaviour and dielectric properties of La2-xSrxNiO4 (LSNO)/poly(vinylidene fluoride) (PVDF) composites with different Sr doping concentrations were investigated. The semiconducting LSNO filler particles with x = 0.2 (LSNO-1) and x = 0.4 (LSNO-2) were prepared using a chemical combustion method. The microstructures, thermal properties, and phase compositions of the polymer composites and filler particles were systematically investigated. The conductivity of the LSNO fillers increased with the Sr content and had an important impact on the dielectric properties of the LSNO/PVDF composites. The percolation threshold of the LSNO-2/PVDF composite was lower than that of the LSNO-1/PVDF composite. An ultra-high dielectric permittivity (ϵ′) of 3384.7 (at 1 kHz and room temperature), which was approximately 340 times higher than that of pure PVDF, was obtained for the LSNO-2/PVDF composite with a filler volume fraction of 25 vol%. The enhanced dielectric properties were attributed to interfacial polarisation at the semiconductor-insulator interface, a micro-capacitor model, and the intrinsically remarkable dielectric properties of the LSNO ceramic. © 2020 The Royal Society of Chemistry.},
document_type={Article},
source={Scopus},
}
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