Optical and Mossbauer studies on YAG:Eu nanocrystals synthesized by a sol-gel method

S. Georgescu; S. Constantinescu; A. M. Chinie; A. S. Stefan; O. Toma; I. Bibicu

doi:10.1117/12.755960

1 August 2007 Optical and Mossbauer studies on YAG:Eu nanocrystals synthesized by a sol-gel method

S. Georgescu, S. Constantinescu, A. M. Chinie, A. S. Stefan, O. Toma, I. Bibicu

Proceedings Volume 6785, ROMOPTO 2006: Eighth Conference on Optics; 67850A (2007) https://doi.org/10.1117/12.755960
Event: ROMOPTO 2006: Eighth Conference on Optics, 2006, Sibiu, Romania

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.

Citation Download Citation

S. Georgescu, S. Constantinescu, A. M. Chinie, A. S. Stefan, O. Toma, and I. Bibicu "Optical and Mossbauer studies on YAG:Eu nanocrystals synthesized by a sol-gel method", Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67850A (1 August 2007); https://doi.org/10.1117/12.755960

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