Kumar, S. Anoop and Singh, Avanish Pratap and Singh, Avanish Pratap and Saini, Parveen and Khatoon, Fehmeeda and Dhawan, S. K. (2012) Synthesis, charge transport studies, and microwave shielding behavior of nanocomposites of polyaniline with Ti-doped gamma-Fe2O3. Journal of Materials Science, 47 (5). pp. 2461-2471. ISSN 0022-2461

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Abstract

This article reports the synthesis, charge transport studies, and microwave shielding properties of polyaniline-Ti-doped gamma-Fe2O3 nanocomposite. The composite has been prepared by the in situ chemical oxidative polymerization using dodecylbenzenzesulfonic acid as a dopant. These resulting polymer composites have been found thermally stability up to 260 A degrees C with magnetization value of similar to 10 emu/g. The temperature dependence of electrical conductivity reveals the applicability of Mott's 3D-VRH model. The composites has shown the shielding effectiveness of 35.64-45.20 dB (> 99.99% attenuation) in 12.4-18 GHz (Ku-Band) frequency range. The enhancement of SE has been due to combination of dielectric and magnetic losses leading to decrease in skin depth increase in total (sigma(T)) conductivity and better matching of input impedance.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s Springer Verlag
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:47
Last Modified:	19 Aug 2026 10:47
URI:	https://npl.csircentral.net/id/eprint/3372

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