Microstructure of Zirconia-Based Sol-Gel Glasses Studied by SANS

0454103 - ÚJF 2016 RIV PL eng J - Článek v odborném periodiku
Ryukhtin, Vasil - Strunz, Pavel - Kopitsa, G. P. - Ezdakova, K. V. - Gubanova, N. N. - Ivanov, V. K. - Baranchikov, A. Y. - Angelov, Borislav - Feoktistov, A. - Pipich, V. - Levinský, P.
Microstructure of Zirconia-Based Sol-Gel Glasses Studied by SANS.
Acta Physica Polonica A. Roč. 128, č. 4 (2015), s. 582-584. ISSN 0587-4246. E-ISSN 1898-794X.
[ISPMA 13 - 13th INTERNATIONAL SYMPOSIUM ON PHYSICS OF MATERIALS. Praha, 31.08.2014 - 04.09.2014]
Grant CEP: GA ČR GB14-36566G; GA MŠMT LM2011019
Institucionální podpora: RVO:61389013 ; RVO:61389005
Klíčová slova: sol-gel method * SANS * USANS
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 0.525, rok: 2015

Zirconia-based bulk glasses were prepared for the first time by sol-gel method. Such materials are very promising for application as photochromic devices, catalytic systems, chemical sensors, lasers and other nonlinear optics devices. Obtained transparent and semi-transparent materials were studied by small and ultra-small angle neutron scattering (SANS and USANS) methods. As evidenced by SANS, morphology of zirconia glasses is very sensitive to parameters of sol-gel synthesis, e.g. temperature and concentration of reactants. SANS data correlates rather well with surface porosity data. Increasing water concentration in reaction mixtures containing zirconium propylate leads to a significant increase in fractal cluster size, while decrease of the temperature results in an increase of the fractal dimension. The obtained results indicate that parameters of the microstructure and consequently physical properties of zirconia glasses can be effectively controlled by parameters of synthesis.
Trvalý link: http://hdl.handle.net/11104/0254799