Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1492341 | Materials Research Bulletin | 2006 | 7 Pages |
Abstract
The difference has been revealed between the statistical distributions of centrosymmetric and noncentrosymmetric titanates over crystal symmetry systems. Space formations of Ti-O polyhedra has been analyzed for 52 noncentrosymmetric titanates. The type of Ti-O polyhedra space formations is dependent on the stoichiometric ratio, SR = n(O)/n(Ti), where n(O) is the number of oxygen and n(Ti) is the number of titanium atoms in formal composition of the compound. Individual (Ti-O) polyhedra are found for SR â¥Â 3.5 (SR â¥Â 6 for octahedra), chains and layers of the polyhedra exist in the range stoichiometric ratio, SR = 3.5-7.0. Only framework formations are possible at SR â¤Â 3.5.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A.S. Korotkov, V.V. Atuchin,