Synthesis of Nanosized Powders with the Structure of Perovskite
Journal Title: Фізика і хімія твердого тіла - Year 2015, Vol 16, Issue 1
Abstract
The aim of this work was to create and study of ferrite lanthanum powders, using sol-gel technology with participation of auto-combustion. After the sintering at a temperature of 1123 K only one phase, which corresponded to the solid solution LaFeO3, was obtained. It was found that obtained powders were agglomerated, and the size of the crystallites were less than 50 nm. It was researched the processes of phase transitions and chemical reactions, which the heating of synthesized material in the temperature range 298 - 1173 K accompany. It was shown that the process of forming of LaFeO3 phase occurs by heating the powder at a temperature of 1043 K.
Authors and Affiliations
V. S. Bushkova, B. K. Ostafiychuk, Yu. M. Tafiychuk, I. P. Yaremiy
Ignition and Self-Supporting Burning of Gas-Air Mixtures with Hydrogen Admixtures on Platinum Wire
The proposed work describes analytical identification of hydrogen admixture concentration and catalyst temperatures limit values beyond which catalytic flameless steady combustion of gas-air mixtures at ambient temperatu...
Quasielastic Light Scattering and Heat Transfer in Pb2P2S6 Crystals
By analyzing of the central peak on Brillouin light scattering spectra, quasielastic scattering light of Pb2P2S6 crystals was investigated. It was found the differences between empirical and calculated (in terms of therm...
Quantum-Chemical Research of Fluoro Containing Hydrocarbons, That Have Fire Extinguishing Effect
Research of probable destruction products of fire extinguishing substances have been provided by quantum-chemical calculations. It was shown that formation of atomic fluorine and fluorinated radicals promote to retardati...
Structure Formation and Corrosion Behaviour of Quasicrystalline Al–Ni–Fe Alloys
The formation of quasicrystalline decagonal phase and related crystalline phases was investigated by a combination of optical metallography, powder X-ray diffraction, atomic absorption spectroscopy and differential therm...
Effect of Ionizing Radiation on the Structure, Electro-Physical and Optical Characteristics of Cd1-xZnxTe Crystals
Based on X-ray studies, conditions for growth of high structural perfect Cd1-хZnxTe (0,02≤х≤0,1) crystalshave been optimized. In crystals obtained, changes in the structure, electrical parameters and optical transmission...