Polyaniline/LiNi0.5La0.08Fe1.92O4 Nanocomposite: A Study of Dielectric and Electric Modulus Spectroscopy |
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| Authors: | Jing Jiang Lun-Hong Ai |
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| Institution: | 1. Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province , China West Normal University , Nanchong, China;2. College of Chemistry and Chemical Engineering , China West Normal University , Nanchong, China |
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| Abstract: | Polyaniline(PANI)/LiNi0.5La0.08Fe1.92O4 nanocomposite was synthesized by an in situ polymerization of aniline in the presence of LiNi0.5La0.08Fe1.92O4 nanoparticles. The dielectric properties of a PANI/LiNi0.5La0.08Fe1.92O4 (10 wt% weight ratio of LiNi0.5La0.08Fe1.92O4 to aniline monomer) nanocomposite were investigated in the frequency range of 106–109 Hz. The dielectric constant (?′) and dielectric loss (?″) were frequency dependent, having relatively high values at low frequency and decreasing with increasing frequency. The values of ?′ and ?″ of PANI/LiNi0.5La0.08Fe1.92O4 nanocomposite were found to be lower than those of the pristine PANI. Electric modulus analysis was carried out to understand the electrical relaxation process. |
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| Keywords: | dielectric properties electric modulus nanocomposite polyaniline |
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