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Journal of Spectroscopy
Volume 2015, Article ID 478329, 7 pages
http://dx.doi.org/10.1155/2015/478329
Research Article

Spectroscopic Studies of the Behavior of Eu3+ on the Luminescence of Cadmium Tellurite Glasses

1Departamento de Física, Universidad de Sonora, 83000 Hermosillo, SON, Mexico
2Departamento de Investigación en Física, Universidad de Sonora, 83000 Hermosillo, SON, Mexico
3Cátedras Conacyt, Departamento de Física, Universidad de Sonora, 83000 Hermosillo, SON, Mexico
4Centro de Investigación y Estudios Avanzados del IPN, Unidad Saltillo, Avenida Industria Metalúrgica No. 1062, Parque Industrial Saltillo-Ramos Arizpe, 25900 Ramos Arizpe, COAH, Mexico
5Departamento de Ciencias Químicas Biológicas y Agropecuarias, Unidad Regional Sur, 85880 Navojoa, SON, Mexico
6Benemérita Universidad Autónoma de Puebla, Postgrado en Física Aplicada, Facultad de Ciencias Físico-Matemáticas, Avenida San Claudio y Avenida 18 Sur, Colonia San Manuel, Ciudad Universitaria, 72570 Puebla, PUE, Mexico
7The Glass-Ceramics Lab., Instituto Eduardo Torroja de Ciencias de la Construcción (CSIC), 28033 Madrid, Spain

Received 31 October 2014; Accepted 20 May 2015

Academic Editor: Carlos Andres Palacio

Copyright © 2015 I. V. García-Amaya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effect of europium doping on the photoluminescence of ZnO-CdO-TeO2 glasses is analyzed. TeO2-based glasses are of high interest as hosts for laser glasses. The Eu-doped oxide glasses were prepared by the conventional melt-quenching method. Five different concentrations of europium nitrate hexahydrate that varied from 0.3 to 1.5 mol% were used. SEM observations revealed the formation of zinc aluminate spinel and disperse droplets of liquid-liquid phase separation in the glasses. X-Ray diffraction reveals the amorphous structure of the fabricated glasses. FT-IR and Raman spectra show the presence of TeO4 and TeO3+1/TeO3 units that conform with the glass matrix. Raman spectra evidenced a band located at 1556 cm−1 that can be related to interstitial molecular oxygen in the glass matrix. Photoluminescence of the glasses showed light emission due to the following europiumtransitions from its , , and levels to its manifolds: (468 nm), (490 nm), (511 nm), (536 nm), (554 nm), (579.5 nm), (592 nm), (613 nm), (652 nm), and (490 nm). The estimated decay time, , was 0.4 ms for all the glasses.