Recently object of steadfast attention of scientists became nanopowders of oxide rare earth elements, used for reception of optical ceramics. Interest to these materials is caused by prospect of their wide application in a science and technics as laser environments for powerful lasers, optical elements, transparent phosphors, magneto-optical materials.

The purpose of work was obtaining and research nanopowders of oxide lutetium. By the method of colloid synthesis in solution has been synthesized precursor, at further which temperature treatment have been received monodisperse, the spherical form nanoparticles in diameter 60-120 nm. The degree of dispersion of nanoparticles Lu₂O₃ does not exceed 10 %. The specific surface nanopowder Lu₂O₃, appreciated with the help of method BET, makes 14-22 m²/g. By a method of X-ray diffraction it is determined, that received oxide lutetium has cubic symmetry of a crystal lattice with the period 10,39 Å.

One of the major problems for obtaining dense optical nanoceramics is prevention of process of agglomeration nanoparticles which occurs at a stage of drying and annealing precursor. The lead researches on use of various methods of drying precursor (drying on air at room temperature, 60°С, 120°С; azeotropic distillation with use ethyl alcohol; lyophilization; microwave drying) have shown what to prevent agglomeration nanoparticals Lu₂O₃ it is possible at drying precursor on air at room temperature and at drying with the help azeotropic distillation. At the further annealing at temperature 700 °С turn out not agglomerated nanopowders Lu₂O_3.

From isolated monodisperse nanoprticles Lu₂O₃ by colloidal pressure filtration and monoaxial pressing have been received homogeneous dense compacts. The density received compacts makes 45-52 %. The preliminary optical properties of vacuum sintered Lu₂O₃ ceramics have been determined.

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