Large magnetorefractive effect in magnetite

J. M. Caicedo; S. K. Arora; R. Ramos; I. V. Shvets; J. Fontcuberta; G. Herranz

doi:10.1088/1367-2630/12/10/103023

Large magnetorefractive effect in magnetite

J. M. Caicedo, S. K. Arora, R. Ramos, I. V. Shvets, J. Fontcuberta, G. Herranz

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We carried out a magneto-optical spectroscopic study of magnetite (Fe ₃O₄) thin films and single crystals at optical wavelengths. We observed a relevant quadratic magneto-optic contribution that can be notably larger than first-order linear magneto-optics at some range of wavelengths in the visible region. These unusual quadratic effects are particularly strong at the Verwey temperature (100-120K) and decay slowly away from this transition temperature. We attribute this remarkable magneto-optical response to a magnetorefractive effect associated with the field-dependent polaronic conductivity at optical frequencies, which interestingly enough is already noticeable at room temperature.

Original language	English
Article number	103023
Journal	New Journal of Physics
Volume	12
DOIs	https://doi.org/10.1088/1367-2630/12/10/103023
Publication status	Published - 2010 Oct 14

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1367-2630/12/10/103023

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title = "Large magnetorefractive effect in magnetite",

abstract = "We carried out a magneto-optical spectroscopic study of magnetite (Fe 3O4) thin films and single crystals at optical wavelengths. We observed a relevant quadratic magneto-optic contribution that can be notably larger than first-order linear magneto-optics at some range of wavelengths in the visible region. These unusual quadratic effects are particularly strong at the Verwey temperature (100-120K) and decay slowly away from this transition temperature. We attribute this remarkable magneto-optical response to a magnetorefractive effect associated with the field-dependent polaronic conductivity at optical frequencies, which interestingly enough is already noticeable at room temperature.",

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AU - Caicedo, J. M.

AU - Arora, S. K.

AU - Ramos, R.

AU - Shvets, I. V.

AU - Fontcuberta, J.

AU - Herranz, G.

PY - 2010/10/14

Y1 - 2010/10/14

N2 - We carried out a magneto-optical spectroscopic study of magnetite (Fe 3O4) thin films and single crystals at optical wavelengths. We observed a relevant quadratic magneto-optic contribution that can be notably larger than first-order linear magneto-optics at some range of wavelengths in the visible region. These unusual quadratic effects are particularly strong at the Verwey temperature (100-120K) and decay slowly away from this transition temperature. We attribute this remarkable magneto-optical response to a magnetorefractive effect associated with the field-dependent polaronic conductivity at optical frequencies, which interestingly enough is already noticeable at room temperature.

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Large magnetorefractive effect in magnetite

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