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Spectra of europium-doped yttrium oxide and yttrium vanadate phosphors

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Czechoslovak Journal of Physics B Aims and scope

Abstract

The spectral distributions of the visible absorption and fluorescence emission under electron beam excitation of Eu3+-doped (Y2O3) and (YVO4) powders have been detected and analyzed. (Y2O3: Eu3+) has a cubicC crystal structure with a unit cell dimension a=10·61 Å. Its observed transitions from7 F 0 to many upper states have been recognized; the observed number of Stark components is in agreement with that based on theC 2 site symmetry of the Eu3+ ion in Y2O3. Eu3+-doped yttrium vanadate has a typical zircon tetragonal crystal structure with unit cell dimensions ofc=6·29 Å anda=7·11 Å. The observed transitions in (Eu3+: YVO4) have been identified and assigned in accordance with theD 2d site symmetry of the Eu3+ ion in this lattice.

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Authors and Affiliations

  1. Physics Unit, The National Cancer Institute, Cairo University, Cairo, Egypt

    M. S. Elmanharawy, A. H. Eid & A. Abdel Kader

  2. Electron Microscopy Laboratory, Physics Department, The National Research Centre, Dokki, Cairo, Egypt

    A. H. Eid

  3. El-Nasr Company for Television, Dar El-Salam, Cairo, Egypt

    A. Abdel Kader

Authors
  1. M. S. Elmanharawy
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  2. A. H. Eid
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  3. A. Abdel Kader
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Additional information

The authors would like to express their deep gratitude to Professor G. F. J.Garlick, University of Hull, England, for offering experimental facilities in his Physics Department.

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Elmanharawy, M.S., Eid, A.H. & Kader, A.A. Spectra of europium-doped yttrium oxide and yttrium vanadate phosphors. Czech J Phys 28, 1164–1173 (1978). https://doi.org/10.1007/BF01602806

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  • DOI: https://doi.org/10.1007/BF01602806

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