Magneto-optic material selectivity in self-assembled BiFeO3-CoFe2O4 biferroic nanostructures

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American Institute of Physics

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Abstract

Material selective sensitivity of a magneto-optical polar Kerr effect to magnetic contributions from different inclusions in self-organized magnetic nanostructures is presented. The method is supported by modeling of the magneto-optic response based on the effective medium approximation and by hysteresis loop measurement of the multiferroic BiFeO3-CoFe2O4 self-assembled nanostructure. Magneto-optic selective sensitivity is demonstrated and explained as an effect of different complex diagonal and off-diagonal permittivity tensor elements of two materials.

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bismuth compounds, cobalt compounds, dielectric hysteresis, ferroelectric materials, ferromagnetic materials, inclusions, Kerr magneto-optical effect, magnetic hysteresis, multiferroics, nanostructured materials, permittivity, self-assembly

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Journal of Applied Physics. 2009, vol. 105, issue 7, art. no. 07C124.