X-ray luminescence properties of rare-earth doped orthotantalate

This paper reports the X-ray luminescence emission spectra of YTaO 4 and GdTaO 4 activated by rare-earth ions. The luminescence efficiency of M′-type YTaO 4 activated by rare-earth ions was calculated. An assumption model was used to explain the luminescent properties under X-ray excitation. The mod...

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Bibliographic Details
Published in:Materials research bulletin 2000-09, Vol.35 (12), p.1921-1931
Main Authors: Li, Bo, Gu, Zhennan, Lin, Jianhua, Su, Mian-Zeng
Format: Article
Language:English
Subjects:
A. Composites
A. Inorganic compounds
Condensed matter: electronic structure, electrical, magnetic, and optical properties
D. Luminescence
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other solid inorganic materials
Photoluminescence
Physics
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Summary:This paper reports the X-ray luminescence emission spectra of YTaO 4 and GdTaO 4 activated by rare-earth ions. The luminescence efficiency of M′-type YTaO 4 activated by rare-earth ions was calculated. An assumption model was used to explain the luminescent properties under X-ray excitation. The model assumes that the TaO 4 3− group absorbs all the excitation energy, then transfers part of the energy to rare-earth ions, followed by emission of rare-earth ions. The calculation results agree with experimental results for M′-type YTaO 4 activated by Sm 3+, Tb 3+, and Dy 3+. M′-type YTaO 4:Eu 3+ is an exception because Eu 3+ may be involved in the process of energy absorption.
ISSN:0025-5408
1873-4227
DOI:10.1016/S0025-5408(00)00404-9