Influence of mechanochemical processing to luminescence properties in Y2O3 
powder

Gajović, Andreja; Tomašić, N.; Djerdj, Igor; Su, Dang Sheng; Furić, K.

doi:10.1016/j.jallcom.2007.02.083

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Influence of mechanochemical processing to luminescence properties in Y₂O₃ powder

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Su, Dang Sheng
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Gajović, A., Tomašić, N., Djerdj, I., Su, D. S., & Furić, K. (2008). Influence of mechanochemical processing to luminescence properties in Y₂O₃ powder. Journal of Alloys and Compounds, 456(1-2), 313-319. doi:10.1016/j.jallcom.2007.02.083.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-FEA4-4

Abstract

In high purity Y₂O₃ powders presence of small amount of erbium ions in cation sites was identified due to the luminescence bands observed by Raman spectrometer. The decrease of the luminescence intensity during high-energy ball-milling was explained. The mechanochemical processing induced the changes of Y₂O₃ microstructure introducing distortion of the crystal lattice and oxygen vacancies in the cubic phase, substitution of tungsten at the cation sites in c-Y₂O₃, and incomplete phase transition of Y₂O₃ from the cubic to the monoclinic structure. The influence of the particle-size decrease, caused by ball-milling, to luminescence was also considered.