22 May 2013 Experimental studies of cobalt ferrite nanoparticles doped silica matrix 3D magneto-photonic crystals
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Abstract
In this paper, we present the synthesis and the optical properties of 3D magneto-photonic structures. The elaboration process consists in firstly preparing then infiltrating polystyrene direct opals with a homogeneous solution of sol-gel silica precursors doped by cobalt ferrite nanoparticles, and finally dissolving the polystyrene spheres. Scanning Electron Microscopy (SEM) images of the prepared samples clearly evidence a periodic arrangement. Using a home-made polarimetric optical bench, the transmittance as a function of the wavelength, the Faraday rotation as a function of the applied magnetic field, and the Faraday ellipticity as a function of the wavelength and as a function of the applied magnetic field were measured. The existence of deep photonic band gaps (PBG), the unambiguous magnetic character of the samples and the qualitative modification of the Faraday ellipticity in the area of the PBG are evidenced.
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E. Abou Diwan, F. Royer, R. Kekesi, D. Jamon, M. F. Blanc-Mignon, S. Neveu, J. J. Rousseau, "Experimental studies of cobalt ferrite nanoparticles doped silica matrix 3D magneto-photonic crystals", Proc. SPIE 8767, Integrated Photonics: Materials, Devices, and Applications II, 87670W (22 May 2013); doi: 10.1117/12.2016676; https://doi.org/10.1117/12.2016676
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