Optical study of three-dimensional magnetic photonic crystals opal/Fe3O4

Optical and magneto-optical properties of three-dimensional magnetic photonic crystals, based on magnetite Fe3O4 embedded into an opal film matrix, are investigated in both transmission and reflection. A strong enhancement of the polar Kerr effect and a modification of the Faraday effect have been f...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2009-04, Vol.321 (7), p.840-842
Main Authors: Pavlov, V.V., Usachev, P.A., Pisarev, R.V., Kurdyukov, D.A., Kaplan, S.F., Kimel, A.V., Kirilyuk, A., Rasing, Th
Format: Article
Language:English
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Summary:Optical and magneto-optical properties of three-dimensional magnetic photonic crystals, based on magnetite Fe3O4 embedded into an opal film matrix, are investigated in both transmission and reflection. A strong enhancement of the polar Kerr effect and a modification of the Faraday effect have been found near the photonic band-gap of about 1.8 eV. Unusual changes of hysteresis curves and their dependence on photon energy have been revealed in the spectral region where the magneto-optical effect reverses its sign. This phenomenon has been explained by two types of magnetite particles inside the opal matrix having different coercive fields and spectral behaviour.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2008.11.065