Investigation of structural, thermal, and electrical properties of magnesium substituted cobalt ferrite reinforced polyaniline nanocomposites
Source abstract
Abstract
Abstract In the present work, PANI/ Mg x Co 1 − x Fe 2 O 4 (x = 0.2, 0.4, 0.6, 0.8) nanocomposites were synthesized via in-situ oxidation polymerization. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) confirmed the formation of nanocomposites. Morphological study of synthesized materials was carried out by scanning electron microscope (SEM) analysis which confirms the construction of magnetic conducting phases in composite materials.Thermogravimetric analysis (TGA) of composites revealed that the thermal stability of the composite with large concentration of magnesium is superior due to higher interaction between the polymer and ferrite nanoparticles. The calculated activation energy of the materials from DC conductivity measurement was found to be considerable sensitive with the varying amount of magnesium contents in the synthesized materials. Dielectric measurements (e' and e'') and AC conductivity ( σ ac ) of samples were studied through impedance analyzer in the frequency range of 100 Hz to 10 MHz. The different investigated properties of fabricated materials are presenting them as promising materials for various high frequency applications.
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Research context
OpenAlex topics: Conducting polymers and applications · Multiferroics and related materials · Electromagnetic wave absorption materials
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