Frequency-dependent dielectric and electric modulus properties of Li–Ni–Sm–Fe–O spinel embedded in conducting polymer |
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| Authors: | Lunhong Ai Jing Jiang Liangchao Li |
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| Affiliation: | (1) Laboratory of Applied Chemistry and Pollution Control Technology, College of Chemistry and Chemical Engineering, China West Normal University, 637002 Nanchong, China;(2) Department of Chemistry, Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Zhejiang Normal University, 321004 Jinhua, China; |
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| Abstract: | Conducting polymeric nanocomposite containing Li–Ni–Sm–Fe–O spinel was synthesized by the chemical oxidizing of aniline in
the presence of LiNi0.5Sm0.08Fe1.92O4 particles. The dielectric and electric modulus properties of the as-prepared samples were investigated over a frequency range
from 106 to 109 Hz. The dielectric constant (ε′), dielectric loss (ε″) and dissipation factor (tan δ) for all samples presented relatively high values at low frequency and were found to decrease with the frequency. The values
of ε′, ε″ and tan δ of the nanocomposite were lower than that of the pristine PANI. Electric modulus analysis had been carried out to understand
the electrical relaxation process. The dielectric relaxation time for the nanocomposite became longer due to the introduction
of LiNi0.5Sm0.08Fe1.92O4 particles lowering the crystallinity of PANI. |
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