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Title: Structural, Electrical and Dielectric Properties of Hexa-ferrite-Polyaniline Nano-composites

Abstract

Ferrite-polyaniline (PANI) composites were prepared by in situ polymerization of polyaniline with the general formula (1 − x) ferrite + (x) PANI where x = 0, 0.25, 0.5, 0.75, 1. The samples were characterized by XRD, SEM, electrical resistivity, and dielectric measurements. X-ray diffraction reveals single phase formation of CaBaCo{sub 2}Al{sub 0.5}Fe{sub 11.5}O{sub 22} Y-type ferrite, whereas polyaniline exhibits an amorphous nature. At room temperature, the resistivity of nano-composites increases with the increase of ferrite filler contents from 3.17 × 10{sup 4} to 3.19 × 10{sup 7} Ω cm. Real and imaginary parts of the complex permittivity of the PANI-ferrite composites follow the Maxwell-Wagner model. Based on the Jonscher Law, the AC conductivity of PANI-ferrite composites experiences an increase with the increase in frequency. The exponent calculated from AC conductivity reveals that the hopping is the likely conduction mechanism. The activation energy obtained from temperature-dependent measurements is consistent with room temperature resistivity. Due to the light weight, low cost and flexibility of design, the ferrite-polymer composites are considered useful for microwave devices.

Authors:
; ;  [1]
  1. Bahauddin Zakariya University, Department of Physics (Pakistan)
Publication Date:
OSTI Identifier:
22771330
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 5; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACTIVATION ENERGY; DIELECTRIC MATERIALS; ELECTRIC CONDUCTIVITY; FERRITES; MICROWAVE RADIATION; NANOCOMPOSITES; PERMITTIVITY; POLYMERIZATION; POLYMERS; SCANNING ELECTRON MICROSCOPY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; X-RAY DIFFRACTION

Citation Formats

Ajmal, Muhammad, Islam, M. U., and Ali, Absar. Structural, Electrical and Dielectric Properties of Hexa-ferrite-Polyaniline Nano-composites. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4332-X.
Ajmal, Muhammad, Islam, M. U., & Ali, Absar. Structural, Electrical and Dielectric Properties of Hexa-ferrite-Polyaniline Nano-composites. United States. doi:10.1007/S10948-017-4332-X.
Ajmal, Muhammad, Islam, M. U., and Ali, Absar. Tue . "Structural, Electrical and Dielectric Properties of Hexa-ferrite-Polyaniline Nano-composites". United States. doi:10.1007/S10948-017-4332-X.
@article{osti_22771330,
title = {Structural, Electrical and Dielectric Properties of Hexa-ferrite-Polyaniline Nano-composites},
author = {Ajmal, Muhammad and Islam, M. U. and Ali, Absar},
abstractNote = {Ferrite-polyaniline (PANI) composites were prepared by in situ polymerization of polyaniline with the general formula (1 − x) ferrite + (x) PANI where x = 0, 0.25, 0.5, 0.75, 1. The samples were characterized by XRD, SEM, electrical resistivity, and dielectric measurements. X-ray diffraction reveals single phase formation of CaBaCo{sub 2}Al{sub 0.5}Fe{sub 11.5}O{sub 22} Y-type ferrite, whereas polyaniline exhibits an amorphous nature. At room temperature, the resistivity of nano-composites increases with the increase of ferrite filler contents from 3.17 × 10{sup 4} to 3.19 × 10{sup 7} Ω cm. Real and imaginary parts of the complex permittivity of the PANI-ferrite composites follow the Maxwell-Wagner model. Based on the Jonscher Law, the AC conductivity of PANI-ferrite composites experiences an increase with the increase in frequency. The exponent calculated from AC conductivity reveals that the hopping is the likely conduction mechanism. The activation energy obtained from temperature-dependent measurements is consistent with room temperature resistivity. Due to the light weight, low cost and flexibility of design, the ferrite-polymer composites are considered useful for microwave devices.},
doi = {10.1007/S10948-017-4332-X},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 5,
volume = 31,
place = {United States},
year = {2018},
month = {5}
}