Distribution, structures and nonlinear properties of noncentrosymmetric titanates

Journal Article · Thu Oct 12 00:00:00 EDT 2006 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2006.03.019· OSTI ID:20891931

Korotkov, A S ^[1]; Atuchin, V V ^[1]

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1. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090 (Russian Federation)

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 {>=} 3.5 (SR {>=} 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 {<=} 3.5.

• OSTI ID: 20891931
• Journal Information: Materials Research Bulletin, Vol. 41, Issue 10; Other Information: DOI: 10.1016/j.materresbull.2006.03.019; PII: S0025-5408(06)00118-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
CRYSTALS
LAYERS
OPTICAL PROPERTIES
STOICHIOMETRY
TITANATES
TITANIUM