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- W3201125320 endingPage "836" @default.
- W3201125320 startingPage "832" @default.
- W3201125320 abstract "Percolative composites with negative permittivity have attracted widespread attentions due to their great potential in electromagnetic shielding and microwave devices. Targeting at achieving epsilon-negative properties, the percolative graphite/barium titanate (GR/BaTiO3) composite is herein designed and prepared using hot-pressing sintered process. It's found that the plasma oscillations of delocalized electrons result in the epsilon negative permittivity behaviors when the GR contents exceeds the 2 wt% (percolation threshold), and frequency dependence of the negative permittivity which is in well agreement with the Drude model. Meanwhile, it's demonstrated that the ac conductivity represents a typical metal-like behavior as the conductive networks formed within the composites by the increasing GR loadings. Moreover, the equivalent circuit analysis reveals the relationships between capacitive-inductive transition and the conversion of permittivity changing from positive to negative. This work provides effective possibility for developing excellent dielectric properties of percolative GR/BaTiO3 composite for capacitors and coil-less electrical inductors applications." @default.
- W3201125320 created "2021-09-27" @default.
- W3201125320 creator A5003084839 @default.
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- W3201125320 date "2022-01-01" @default.
- W3201125320 modified "2023-10-13" @default.
- W3201125320 title "Low-frequency plasmonic state and tunable negative permittivity in percolative graphite / barium titanate composites" @default.
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- W3201125320 doi "https://doi.org/10.1016/j.ceramint.2021.09.164" @default.
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