Singh, Pooja and Rout, P. K. and Husale, Sudhir and Gupta, Anurag and Singh, Manju and Rakshit, R. K. and Dogra, Anjana (2016) Non-linear polaronic conduction in magnetite nanowires. Journal of Magnetism and Magnetic Materials, 419. 566 -571. ISSN 0304-8853

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Abstract

We report the temperature dependent current (1) - voltage (V) characteristics of Fe3O4 nanowires with varying width (w) of 132, 358, and 709 nm. While the widest nanowire (w=709 nm) shows ohmic I(V) curves for all temperatures, those for w=132 and 358 nm show nonlinearity, which can be expressed by a combination of linear (V) and cubic (V-3) terms. The behaviour of conductance (linear bias component of current) and non-linearity in these nanowires is related to small polaron hopping related conduction. Moreover, we observed an anomalously large hopping lengths, which may be related to the size of percolation cluster and/or antiphase domain. Our study presents first experimental evidence for such non-linear polaronic conduction in magnetite nanowires.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Uncontrolled Keywords:	Pulsed laserdeposition Focused ionbeam Magnetite nanowire
Subjects:	Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	07 Mar 2018 10:55
Last Modified:	07 Mar 2018 10:55
URI:	http://npl.csircentral.net/id/eprint/2305

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