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Structural and electrical properties of composites of polymer-iron carbide nanoparticle embedded in carbon

Shekhar, S and Prasad, V and Subramanyam, SV (2006) Structural and electrical properties of composites of polymer-iron carbide nanoparticle embedded in carbon. In: Materials Science and Engineering: B, 133 (1-3). pp. 108-112.

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Abstract

The electrical transport properties of composites of polymer and iron carbide nanoparticle embedded in carbon have been studied from 300K to 1.3K. The composites show percolative type behavior with a low threshold value. The XRD shows amorphous nature of the composite. The temperature dependence of conductivity follows two different Efros-Shklovskii variable range hopping mechanisms {\bf(}$\sigma=\sigma_{0}exp \lbrack-(T_{ES}/T)^{1/2}\rbrack{\bf)}$ with different pre-exponential factors $(\rho_0)$ and different $T_{ES}$ values in range 300K-6K. Thermogravimetric analysis shows that the thermal stability of composites does not depend on filler content to a large extent.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Polymer composites;Pyrolysis;Transport properties; Nanostructures;Transmission electron microscopy
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 23 May 2008
Last Modified: 19 Sep 2010 04:29
URI: http://eprints.iisc.ernet.in/id/eprint/7596

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