Photonic crystal properties of opal-hematite and opal-magnetite films

S. A. Grudinkin; S. F. Kaplan; N. F. Kartenko; D. A. Kurdyukov; V. G. Golubev

doi:10.1117/12.818010

18 November 2008 Photonic crystal properties of opal-hematite and opal-magnetite films

S. A. Grudinkin, S. F. Kaplan, N. F. Kartenko, D. A. Kurdyukov, V. G. Golubev

Proceedings Volume 7138, Photonics, Devices, and Systems IV; 713816 (2008) https://doi.org/10.1117/12.818010
Event: Photonics, Devices, and Systems IV, 2008, Prague, Czech Republic

Abstract

Photonic crystal and structural properties of synthesized opal films filled with the iron oxides: hematite (α-Fe₂O₃) and magnetite (Fe₃O₄) were investigated by means of scanning electron microscopy, X-ray diffraction, and Fourier transforme spectroscopy. Hematite was infiltrated into opal film pores without depositing the oxide onto the outer film surface by the method of lateral infiltration under capillary forces from a liquid precursor. The synthesis of Fe₃O₄ was performed in the opal pores using α→Fe₂O₃ as a precursor. The evolution of Bragg diffraction line from the (111) planes of the f.c.c lattice of the opal-α-Fe₂O₃ film with a various filling degree was studied. The maximum filling degrees both of opal- α-Fe₂O₃ and of opal-Fe₃O₄ films, estimated from the reflection spectra, appeared to be similar and equal to ~ 55% of the pore volume. The reversible chemical transformation of fillers in opal pores α-Fe₂O₃→Fe₃O₄→α-Fe₂O₃ changes only the filler dielectric constant but does not practically produce structural defects that could affect the photonic crystal properties of the composite.

Citation Download Citation

S. A. Grudinkin, S. F. Kaplan, N. F. Kartenko, D. A. Kurdyukov, and V. G. Golubev "Photonic crystal properties of opal-hematite and opal-magnetite films", Proc. SPIE 7138, Photonics, Devices, and Systems IV, 713816 (18 November 2008); https://doi.org/10.1117/12.818010

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