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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 46,
  • Issue 2,
  • pp. 273-276
  • (1992)

Eu3+ Ion Luminescence Spectra from Lanthanide Sesquioxides Exhibiting Three Different Crystal Structures

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Abstract

We have investigated the Eu<sup>3+</sup> ion luminescence spectra from different host crystals of the lanthanide sesquioxides exhibiting either the A, B, or C form. The Eu<sup>3+</sup> ion luminescence spectra from B-type Eu<sub>2</sub>O<sub>3</sub> and from Eu<sup>3+</sup>-doped A-type La<sub>2</sub>O<sub>3</sub> and C-type Lu<sub>2</sub>O<sub>3</sub> were obtained at room temperature. It is suggested that the luminescence from <i>f-f</i> transitions in the Eu<sup>3+</sup> ion can be used to determine the crystal structure, because the different Eu<sup>3+</sup> ion site symmetries in the different crystal structures give rise to different characteristic spectral splitting patterns.

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