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Sol-gel preparation and characterization of perovskite lanthanum lithium titanate

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Popovici IC, E. Chirila, V. Popescu, V. Ciupina, G. Prodan

Editorial: Journal of Material Science, 42(10), p.3373-3377, 2007.

Rezumat:

Lanthanum lithium titanate, belonging to the solid solution La0.66Li0.33TiO3, was prepared by sol-gel method from LiNO3, La(NO3)3·6H2O and Ti(OC4H9)4 in ideal cation stoichiometry for La0.66Li0.33TiO3. The synthesized product was characterized by X-ray powder diffractometry (XRD) and thermal analyses (DTA-TG). Electron microscopy investigations (SEM and TEM) was used to evaluate the morphology of synthesized La0.66Li0.33TiO3.
The bulk quantities of nano-sized particles of layered La0.66Li0.33TiO3 have been obtained at 1,000°C using the modified sol-gel method. The mean diameter of La0.66Li0.33TiO3 nano-crystals was about 123 nm.

Cuvinte cheie: lanthanum lithium titanate, sol-gel method, XRD, SEM, TEM