Large magnetorefractive effect in magnetite
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2010Citation:
Caicedo, J. M., Arora, S. K., Ramos, R., Shvets, I. V., Fontcuberta, J., Herranz, G., Large magnetorefractive effect in magnetite, New Journal of Physics, 12, 2010, 103023-Download Item:
Abstract:
We carried out a magneto-optical spectroscopic study of magnetite (Fe3O4) 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 (100-120 K) 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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Science Foundation Ireland (SFI)
00/PI.1/C042
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http://people.tcd.ie/ivchvetsDescription:
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New Journal of Physics12
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VERWEY, TRANSITION, magnetoresistiance, systems, magnetite, Fe3O4, filmsSubject (TCD):
Nanoscience & MaterialsMetadata
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