Giant magnetoimpedance near a metal–insulator transition: Study of Fe in a $V_2O_3$ matrix

Kale, Sangeeta and Lofland, SE and Bhagat, SM and Sebastian, Litty and Ramesha, K and Gopalakrishnan, J and Ogale, SB and Li, YH and Garrison, J (2000) Giant magnetoimpedance near a metal–insulator transition: Study of Fe in a $V_2O_3$ matrix. In: Applied Physics Letters, 77 (17). pp. 2725-2727.

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Abstract

We report microwave absorption measurements as a function of temperature (from 290 to 125 K) and magnetic field (from 0 to 0.3 T) in mm-thick parallelepipeds of sintered $V_2O_3$ and $V_2O_3$ containing micron-size Fe precipitates. As before, it turns out that near the metal–insulator (MI) transition, the loss exhibits a sharp peak as a function of temperature. On application of a magnetic field, the peak temperature for ($V_2O_3$ + Fe) changes by a few kelvin, causing a giant magnetoimpedance ( \approx 200% in 0.1 T field) in the neighborhood of the MI transition.

Item Type:	Journal Article
Additional Information:	Copyright for this article belongs to American Institute of Physics (AIP).
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	11 Apr 2005
Last Modified:	19 Sep 2010 04:18
URI:	http://eprints.iisc.ernet.in/id/eprint/2965

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