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Proceedings Paper

Optical and Mossbauer studies on YAG:Eu nanocrystals synthesized by a sol-gel method
Author(s): S. Georgescu; S. Constantinescu; A. M. Chinie; A. S. Stefan; O. Toma; I. Bibicu
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Paper Abstract

Optical and Mossbauer spectroscopy were used to put into evidence the morphological changes induced by the thermal treatments in the YAG:Eu nanocrystals synthesized by a sol-gel method. Both methods exhibit a drastic change of the monitored parameters (ratio of the areas of the electric and the magnetic dipole transitions - for optical spectroscopy and Mossbauer normalized area - for Mossbauer spectroscopy) at the phase transition amorphous-crystalline, followed by a slow evolution of these parameters with the increase of the annealing temperature. This slow evolution is due to the increase in size of the nanocrystals.

Paper Details

Date Published: 1 August 2007
PDF: 5 pages
Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67850A (1 August 2007); doi: 10.1117/12.755960
Show Author Affiliations
S. Georgescu, National Institute for Laser, Plasma and Radiation Physics (Romania)
S. Constantinescu, National Institute for Materials Physics (Romania)
A. M. Chinie, National Institute for Laser, Plasma and Radiation Physics (Romania)
A. S. Stefan, National Institute for Laser, Plasma and Radiation Physics (Romania)
O. Toma, National Institute for Laser, Plasma and Radiation Physics (Romania)
I. Bibicu, National Institute for Materials Physics (Romania)


Published in SPIE Proceedings Vol. 6785:
ROMOPTO 2006: Eighth Conference on Optics

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