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Н. А. Дулина, В. М. Баумер, О. М. Вовк, Т. Г. Дейнека, П. В. Матейченко, Д. C. Софронов, З. П. Сергиенко
«Низкотемпературный синтез люминесцентных нанокристаллических частиц Lu2O3:Eu3? пластинчатой морфологии »
837–847 (2011)

PACS numbers: 61.46.Hk, 68.37.Lp, 78.30.Hv, 78.60.-b, 78.67.-n, 81.07.Wx, 81.70.Pg

The (NH4)xLu(OH)y(CO3)z?nH2O monophase crystalline precursor of Lu2O3 is obtained by precipitation of chlorides from aqueous solution using hydrocarbonate as a precipitant. Precursor is obtained in the form of rhombic plate-like particles with linear dimensions of 10–15 ?m2 and a thickness of several tens of nanometers. Range of presence of (NH4)xLu(OH)y(CO3)z?nH2O crystalline precursor is a molar ratio of the NH4HCO3/Lu3? reagents of about 8–20. We propose the mechanism of formation and thermal decomposition of the crystalline plate-like precursor. Weakly agglomerated cubic-modification lutetium-oxide superfine-particle powder is obtained by low-temperature crystallization of the precursor (T???1000?C). Lu2O3 particles inherit plate-like morphology of the original particles of the carbonate precursor that is a demonstration of the shape-memory effect. Lutetium-oxide particles are composed of not close-packed nanostructured crystallites with linear dimensions of about 50 nm. Luminescent properties of Eu3?-doped Lu2O3 nanostructures with plate-like morphology are investigated too.