Optical Properties of (ZrO2)1 –x(Y2O3)х (х = 0–0.037) Crystals Grown by Directional Crystallization of the Melt

T. V. Perevalov, V. N. Kruchinin, S. V. Rykhlitskii, V. A. Gritsenko, A. P. Eliseev, E. E. Lomonova

Research output: Contribution to journalArticlepeer-review

Abstract

Abstract: The luminescent and optical properties of materials based on zirconium(IV) oxide grown by crystallization of ZrO2 melts with 0, 2.0, 2.5, 2.8, and 3.7 mol % of Y2O3 are studied. Using Raman spectroscopy, it is found that this material with the Y2O3 concentration below 2 mol % is mainly a monoclinic ZrO2 phase. The photoluminescence spectra of these crystals contain a blue–green band peaking at an energy of 2.4 eV. This fact in combination with the specific features of the refractive index and absorption coefficient dispersions indicates the presence of high concentrations of oxygen vacancies and polyvacancies in the samples. At higher concentrations of Y2O3 in the mixture, the tetragonal ZrO2 modification becomes dominant in the materials under study and the blue–green luminescence intensity decreases. The experimental optical spectra are analyzed in comparison with the ab initio calculated spectra for ideal ZrO2 crystals in the cubic, tetragonal, and monoclinic phases.

Original languageEnglish
Pages (from-to)1963-1969
Number of pages7
JournalOptics and Spectroscopy
Volume128
Issue number12
DOIs
Publication statusPublished - Dec 2020

Keywords

  • zirconia
  • directional crystallization
  • ellipsometry
  • photoluminescence
  • Raman spectroscopy
  • quantum-chemical simulation

OECD FOS+WOS

  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 2.05 MATERIALS ENGINEERING

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