Magneto-Optical Study of Opal Thin Films

The structure and optical properties of artificial opal thin films, which were synthesized from silica spheres by a modified self-assembly protocol, in the absence and under the applied magnetic field were studied. The surface characterization showed a homogeneous well-ordered face centered cubic st...

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Veröffentlicht in:	IEEE transactions on magnetics 2011-10, Vol.47 (10), p.2596-2599
Hauptverfasser:	Dung, Phan Tien, Nga, Pham Thu, Nhat, Hoang, Avoine, A., Schwob, C., Tho, Nguyen Duc
Format:	Artikel
Sprache:	eng
Schlagworte:	Angular dependence Annealing colloidal photonic crystals Condensed Matter Cross-disciplinary physics: materials science rheology Exact sciences and technology Indexes magnetic field Materials science Methods of deposition of films and coatings film growth and epitaxy opal Optical films Oscillators Other topics in materials science Photonic crystals Physics Silicon compounds specular reflectance spectra Substrates
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Beschreibung
Zusammenfassung:	The structure and optical properties of artificial opal thin films, which were synthesized from silica spheres by a modified self-assembly protocol, in the absence and under the applied magnetic field were studied. The surface characterization showed a homogeneous well-ordered face centered cubic structure of silica balls at average size 305 ± 5 nm. The reflection measurements showed the main reflection plane (1 1 1) besides a minor secondary (2 0 0) plane. The applied field (up to 1000 Oe) induced a systematical splitting of several lines which showed an increase in intensity according to the increase in applied field and thickness of substrate coating MnO 2 layer.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2011.2157996