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Information × Registration Number 0224U003009, 0121U111453 , R & D reports Title Laser Ceramics for Detector of Harmful Substances popup.stage_title Head Ragulya Andrii V., д.т.н. Registration Date 26-03-2024 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description2  The phase equilibria in the ternary system based on lanthanum, lutetium, and erbium oxides at 1200 °C in the entire concentration range were studied and the corresponding isothermal section was constructed. It was found that in the ternary system La2O3–Lu2O3–Er2O3 at 1200 ºС, fields of solid solutions are formed based on the cubic (С) modification of Lu2O3 and Er2O3, hexagonal (А) modifications of La2O3, and ordered phases of the perovskite type LaLuO3 and LaErO3 (R). The formation of new phases was not detected in the studied system. Based on the data regarding the phase equilibria in the ternary La2O3–Lu2O3–Er2O3 system, the optimal compositions for the synthesis of nanomaterials based on the ordered phase of the LaLnO3 perovskite type were determined. Solubility limits and concentration dependences of periods of crystal lattices of phases formed in the system were determined. Based on the obtained results, regarding the structure of ternary state diagrams based on REE oxides, optimal compositions were selected and nanopowders of the LaLnO3 phase were synthesized. Precursors for obtaining nanopowders based on the perovskite phase were synthesized by the method of heterogeneous deposition. The factors influencing the synthesis of precursors and the formation of nanopowders obtained from them have been established. These include temperature and pH of the solution, urea concentration, drying and thermal decomposition conditions Product Description popup.authors Zamula Maryna V. Kolesnichenko Valerii H. Korniienko Oksana A. Rahulia Andrii V. popup.nrat_date 2024-03-26 Close