Photonic Hall Effect in ferrofluids: Theory and Experiments

Details Photonic Hall Effect in ferrofluids: Theory and Experiments Photonic Hall Effect in ferrofluids: Theory and Experiments

2000-04-06

arxiv.org/abs/cond-mat/0004101v1

Phys. Rev. E, 62(3), 3934-43 (2000)

Physics

Condensed Matter

Soft Condensed Matter

20 pages, 11 figures, submitted

Scientific paper

10.1103/PhysRevE.62.3934

An experimental and theoretical study on the Photonic Hall Effect (PHE) in liquid and gelled samples of ferrofluids is presented. The ferrofluids are aqueous colloidal suspensions of Fe(_{2})CoO(_{4}) particles, which can be considered as anisotropic and absorbing Rayleigh scatterers. The PHE is found to be produced by the orientation of the magnetic moments of the particles, as is also the case for the Faraday effect. The dependence of the PHE with respect to the concentration of the scatterers, the magnetic field and the polarization of the incident light is measured in liquid and in gelled samples and is compared to a simple model based on the use of a scattering matrix and the single scattering approximation.

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