Abstract
A novel low density polyethylene (LDPE) with multiferroic bismuth ferrite (BiFeO3) nano-dielectric was successfully prepared via a solution-melt blending method. The structure, thermal, magnetic, as well as dielectric properties of the nano-dielectric were examined. The microstructures of LDPE/BiFeO3 were characterized by Fourier transform infrared, X-ray diffraction, and scanning electron microscopy. Microstructural analysis indicated that BiFeO3 nanoparticles were well dispersed in the LDPE matrix and the structure of LDPE was unchanged even after doping with BiFeO3 nanoparticles. The differential scanning calorimetry data of the thermal properties revealed that melting temperature has decreased and crystallinity has increased. The reason was that amount of nucleation agents was increased and crystal propagation rate was changed. The corresponding magnetic and dielectric properties were measured using vibrating sample magnetometer and broadband dielectric spectrometer. The results showed that the magnetization behaviour of diamagnetic LDPE was transformed due to the antiferromagnetism of BiFeO3. In addition, the dielectric permittivity and loss of LDPE/BiFeO3 increased with increasing BiFeO3 filler concentrations in the LDPE matrix due to different response mechanisms.
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Acknowledgments
This work was supported by the National 973 Project of China (No. 2012CB723308), the National Natural Science Foundation of China (No. 51307037), the Natural Science Funds of Heilong Jiang Province (Nos. QC2013C042, QC2014C053, and QC2015063), and the Scientific Research Project of Department Education of Heilongjiang Province (No. 12521079). The work was also partly supported by the Open Fund of Key Laboratory of Material Research and Application of Heilongjiang Province Colleges and Universities.
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Song, W., Sun, Z., Zhang, D. et al. Synthesis and characterization of low density polyethylene with multiferroic bismuth ferrite nanocomposite. J Mater Sci: Mater Electron 27, 2328–2334 (2016). https://doi.org/10.1007/s10854-015-4029-5
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DOI: https://doi.org/10.1007/s10854-015-4029-5