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Analysis of crystallization property of LDPE/Fe3O4 nano-dielectrics based on AFM measurements

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Abstract

In this paper, the microstructure of LDPE/Fe3O4 nano-dielectric and pure LDPE films are respectively measured through AFM, and the influence of Fe3O4 nanoparticles (NPs) and magnetic field processing on the crystallization property of the nano-dielectric films are also analyzed. The result shows that the grown direction of crystal plates in the LDPE matrix is ruleless. While as the doping of the Fe3O4 NPs, thickness the crystal plates decreases, and they are packed tightly, this decreases the amorphous area, free volume, and increases the crystallinity of the nano-dielectric film, which proves that the Fe3O4 NPs work as heterogeneous nucleating agents in the nano-dielectric films. After magnetic field processing at 130 °C, the oriented growth of the crystal plates increases, and all the crystal plates of the nano-dielectrics films and the LDPE matrix are stretched with different level, which result in the decrease of their crystallinity. All the results are all accordant with that of XRD measurement measured before.

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Acknowledgements

We gratefully acknowledge the support of this research by Financial support from the Natural Science Foundation of Educational Bureau of Hei Longjiang Province (No. 12521079) and Natural Science Foundation of Heilongjiang Province (No. QC2013C042).

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Authors and Affiliations

  1. College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, People’s Republic of China

    Dong Zhang, Xuan Wang, Wei Song, Zhi Sun, Bai Han & Qing-Quan Lei

  2. Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, People’s Republic of China

    Dong Zhang, Xuan Wang, Wei Song, Zhi Sun, Li-Juan He, Bai Han & Qing-Quan Lei

  3. Hei Longjiang Provincal Key Laboratory of Dielectric Engineering, Harbin University of Science and Technology, Harbin, 150080, People’s Republic of China

    Dong Zhang, Xuan Wang, Wei Song, Zhi Sun, Li-Juan He, Bai Han & Qing-Quan Lei

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  1. Dong Zhang
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  2. Xuan Wang
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Correspondence to Dong Zhang.

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Zhang, D., Wang, X., Song, W. et al. Analysis of crystallization property of LDPE/Fe3O4 nano-dielectrics based on AFM measurements. J Mater Sci: Mater Electron 28, 3495–3499 (2017). https://doi.org/10.1007/s10854-016-5948-5

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  • DOI: https://doi.org/10.1007/s10854-016-5948-5

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