Melt synthesis and structural properties of opal-V2O5 and opal-VO2 nanocomposites

Authors :: Kurdyukov, D.
Grudinkin, S.
Nashchekin, A.
Smirnov, A.
Trofimova, E.
Yagovkina, M.
Pevtsov, A.
Golubev, V.
Source :: Physics of the Solid State; February 2011, Vol. 53 Issue: 2 p428-434, 7p
Publication Year :: 2011
Abstract: Abstract: A method has been proposed for filling bulk and film opals with V<subscript>2</subscript>O<subscript>5</subscript> and V<subscript>2</subscript>O<subscript>5</subscript>: W melts under the action of capillary forces. The VO<subscript>2</subscript> and VO<subscript>2</subscript>: W (1.8 mol %) compounds have been synthesized from the V<subscript>2</subscript>O<subscript>5</subscript> and V<subscript>2</subscript>O<subscript>5</subscript>: W precursors in opal pores. The phase composition and morphology of the nanocomposites prepared have been investigated. It has been revealed that, in the opal-V<subscript>2</subscript>O<subscript>5</subscript> composite, the filler compound has a texture formed by the directional crystallization of the melt in pores of the opal film. The tunable photonic crystal heterostructure opal/opal-VO<subscript>2</subscript> has been synthesized using liquid chemical etching.

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