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Structure and morphology of spherical crystalline (Y1 − x Eu x )2O3 particles

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Abstract

The structure and morphology of monodisperse spherical particles of (Y1 − x Eu x )2O3 solid solutions prepared through the low-temperature thermolysis of an amorphous precursor under isothermal conditions (t = 800°C) have been analyzed in detail in relation to the particle size and composition. The results demonstrate that, in addition to having a polycrystalline (block) structure, the spherical (Y1 − x Eu x )2O3 particles are porous, with a mesoscopic residual pore size. Reducing the diameter of the spherical particles from 400 to 70 nm reduces their porosity and improves their structural perfection. The addition of Eu3+ cations stimulates the growth of crystalline blocks that form a spherical particle, activating diffusion processes in the cation sublattice of the solid solution.

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Authors and Affiliations

  1. Institute for Single Crystals, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkiv, 61001, Ukraine

    O. S. Bezkrovnyi, Yu. V. Yermolayeva, V. V. Yanovskii, N. A. Dulina & A. V. Tolmachev

  2. Institute of Inorganic Chemistry, University of Duisburg-Essen, Universitaetsstr. 5-7, D-45117, Essen, Germany

    O. Prymak

  3. Institute for Single Crystals Science and Technology Complex, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkiv, 61001, Ukraine

    V. N. Baumer

  4. Frantsevich Institute of Materials Science Problems, National Academy of Sciences of Ukraine, vul. Krzhizhanovskogo 3, Kyiv, 03142, Ukraine

    N. I. Danilenko

Authors
  1. O. S. Bezkrovnyi
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  2. Yu. V. Yermolayeva
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  3. V. V. Yanovskii
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  4. N. A. Dulina
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  5. O. Prymak
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  6. V. N. Baumer
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  7. N. I. Danilenko
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  8. A. V. Tolmachev
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Correspondence to O. S. Bezkrovnyi.

Additional information

Original Russian Text © O.S. Bezkrovnyi, Yu.V. Yermolayeva, V.V. Yanovskii, N.A. Dulina, O. Prymak, V.N. Baumer, N.I. Danilenko, A.V. Tolmachev, 2015, published in Neorganicheskie Materialy, 2015, Vol. 51, No. 1, pp. 57–63.

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Bezkrovnyi, O.S., Yermolayeva, Y.V., Yanovskii, V.V. et al. Structure and morphology of spherical crystalline (Y1 − x Eu x )2O3 particles. Inorg Mater 51, 51–56 (2015). https://doi.org/10.1134/S0020168515010021

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  • DOI: https://doi.org/10.1134/S0020168515010021

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