Giant magnetoimpedance near a metal-insulator transition: Study of Fe in a V2O3 matrix

Sangeetá Kale, S. E. Lofland, S. M. Bhagat, Litty Sebastian, K. Ramesha, J. Gopalakrishnan, S. B. Ogale, Y. H. Li, J. Garrison

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

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 V2O3 and V2O3 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 (V2O3 + Fe) changes by a few kelvin, causing a giant magnetoimpedance (≈ 200% in 0.1 T field) in the neighborhood of the MI transition.

Original languageEnglish (US)
Pages (from-to)2725-2727
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number17
DOIs
StatePublished - Oct 23 2000

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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