NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2012, 3 (2), P. 100–115
SPINODAL DECOMPOSITION IN THE SIO2–TIO2 SYSTEM AND HIERARCHICALLY ORGANIZED NANOSTRUCTURES FORMATION
Svetlana Kirillova – St. Petersburg Electrotechnical University “LETI”, St. Petersburg, Russia, assistant, firstname.lastname@example.org
Vyacheslav Almjashev – St. Petersburg Electrotechnical University “LETI”, St. Petersburg, Russia, assistant, email@example.com
Victor Gusarov – Saint Petersburg State Institute of Technology (Technical University), St. Petersburg, Russia, Head of Department, Doctor of science, Professor, Corresponding member of RAS, Victor.V.Gusarov@gmail.com
Phase formation in the liquid phase separation region of the SiO2-TiO2 system was experimentally studied. A thermodynamically optimized phase diagram of the SiO2-TiO2 system has been constructed. The curve of phase spinodal decomposition was calculated. It is shown that the phase decomposition in the liquid phase region occurs through a spinodal mechanism at the melt rapid cooling. It has been experimentally demonstrated that this
phenomenon leads to the formation of hierarchically organized nanostructures.
Keywords: spinodal decomposition, hierarchically organized nanostructure, phase diagram, silicon dioxide, titanium dioxide.
PACS 81.30.Bx, 64.75.Jk