Investigation of activated oxygen molecules on the surface of Y 2O3 nanocrystals by Raman scattering
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 93512 |
Journal / Publication | Journal of Applied Physics |
Volume | 114 |
Issue number | 9 |
Publication status | Published - 7 Sept 2013 |
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DOI | DOI |
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Attachment(s) | Documents
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-84884950304&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(56ed5111-7192-453d-b67d-50608a98f959).html |
Abstract
Activation of surface oxygen molecules on cubic Y2O3 nanocrystals (NCs) is investigated. As the annealing temperature under O 2 is increased, the strong Raman band at 965 cm-1 previously never assigned weakens gradually, while the intensity of the 378 cm-1 Raman band arising from Y3+-O2- vibration increases. X-ray diffraction reveals no structural change during annealing and energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and theoretical calculation suggest that the interstitial oxygen O2 2- connected to the F centers gives rise to the 965 cm-1 Raman band. The results provide direct evidence of the existence of activated oxygen ions on Y2O3 NCs. © 2013 AIP Publishing LLC.
Research Area(s)
Citation Format(s)
Investigation of activated oxygen molecules on the surface of Y 2O3 nanocrystals by Raman scattering. / Xu, J. Q.; Xiong, S. J.; Wu, X. L. et al.
In: Journal of Applied Physics, Vol. 114, No. 9, 93512, 07.09.2013.
In: Journal of Applied Physics, Vol. 114, No. 9, 93512, 07.09.2013.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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