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

doi:10.1063/1.1319508

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

Physics

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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 language	English (US)
Pages (from-to)	2725-2727
Number of pages	3
Journal	Applied Physics Letters
Volume	77
Issue number	17
DOIs	https://doi.org/10.1063/1.1319508
State	Published - Oct 23 2000

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1319508

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title = "Giant magnetoimpedance near a metal-insulator transition: Study of Fe in a V2O3 matrix",

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.",

author = "Sangeet{\'a} Kale and Lofland, {S. E.} and Bhagat, {S. M.} and Litty Sebastian and K. Ramesha and J. Gopalakrishnan and Ogale, {S. B.} and Li, {Y. H.} and J. Garrison",

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T1 - Giant magnetoimpedance near a metal-insulator transition

T2 - Study of Fe in a V2O3 matrix

AU - Kale, Sangeetá

AU - Lofland, S. E.

AU - Bhagat, S. M.

AU - Sebastian, Litty

AU - Ramesha, K.

AU - Gopalakrishnan, J.

AU - Ogale, S. B.

AU - Li, Y. H.

AU - Garrison, J.

PY - 2000/10/23

Y1 - 2000/10/23

N2 - 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.

AB - 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.

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

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