Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Synthesis and investigation of properties of composite ceramics LuAG: Ce / Al2O3

V.A. Lapin, A.A. Kravtsov, V.E. Suprunchuk, L.V. Tarala, E.V. Medyanik, F.F. Malyavin

North-Caucasus Federal University

DOI: 10.26456/pcascnn/2023.15.157

Original article

Abstract: The purpose of this work was to study the effect of the aluminum oxide impurity content onthe features of  vacuum sintering, optical and luminescent properties of composite ceramics LuAG:Ce / Al2O3. Ceramic powders LC-1, LC-2, LC-3 of the composition Lu2,98Ce0,02Al5O12 / Al2O3 were synthesized, where the corundum content was 0, 10, 20 wt.% respectively. The dynamics of shrinkage of ceramic compacts by dilatometry, morphology and elemental analysis of the surface of sintered ceramics LuAG are investigated: Ce / Al2O3 – by scanning electron microscopy. Light transmission and luminescence spectra were obtained. It is shown that with an increase in the content of corundum in the composition of ceramic powder, the temperatures of the beginning and end of shrinkage increase. In this case, the residual porosity is concentrated in areas of ceramics containing mainly corundum crystallites, as a material with a higher sintering temperature. It was revealed that the inclusion of the corundum phase prevents the uncontrolled growth of ceramic grains. Composition with a corundum content of 10 wt.% showed the highest value of luminescence intensity. At the same time, with an increase in the proportion of corundum in composite ceramics, a slight broadening of the luminescence spectra was observed.

Keywords: : LuAG:Ce, ceramics, aluminum oxide, luminescence, optical properties, sintering

  • Viacheslav A. Lapin – Ph.D., Senior Researcher, Sector of Physical and Chemical Methods of Research and Analysis of the Research Laboratory of Technology of Advanced Materials and Laser Media of the Scientific Laboratory Complex of Clean Rooms, Faculty of Physics and Technology, North-Caucasus Federal University
  • Alexander A. Kravtsov – Ph.D., Head of the Nanopowder Synthesis Sector of the Research Laboratory of Technology of Advanced Materials and Laser Media of the Scientific Laboratory Complex of Clean Rooms, Faculty of Physics and Technology, North-Caucasus Federal University
  • Victoria E. Suprunchuk – Ph.D., Senior Researcher, Nanopowder Synthesis Sector of the Research Laboratory of Technology of Advanced Materials and Laser Media of the Scientific Laboratory Complex of Clean Rooms, Faculty of Physics and Technology, North-Caucasus Federal University
  • Ludmila V. Tarala – Researcher, Nanopowder Synthesis Sector of the Research Laboratory of Technology of Advanced Materials and Laser Media of the Scientific Laboratory Complex of Clean Rooms, Faculty of Physics and Technology, North-Caucasus Federal University
  • Evgeniy V. Medyanik – Researcher, Ceramics Sintering Sector of the Research Laboratory of Technology of Advanced Materials and Laser Media of the Scientific Laboratory Complex of Clean Rooms, Faculty of Physics and Technology, North-Caucasus Federal University
  • Fedor F. Malyavin – Head of Ceramics Sintering Sector of the Research Laboratory of Technology of Advanced Materials and Laser Media of the Scientific Laboratory Complex of Clean Rooms, Faculty of Physics and Technology, North-Caucasus Federal University

Reference:

Lapin, V.A. Synthesis and investigation of properties of composite ceramics LuAG: Ce / Al2O3 / V.A. Lapin, A.A. Kravtsov, V.E. Suprunchuk, L.V. Tarala, E.V. Medyanik, F.F. Malyavin // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 157-168. DOI: 10.26456/pcascnn/2023.15.157. (In Russian).

Full article (in Russian): download PDF file

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