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DSC and spectroscopic studies of the structure of V2O5–CdO–P2O5 glasses

N. KERKOURI1,* , M. ET-TABIROU1, A. CHAHINE1, A. MAZZAH2, M. C. DHAMELINCOURT2, M. TAIBI3

Affiliation

  1. Laboratoire de Physico-Chimie des Matériaux Vitreux et Cristallisés (LPCMVC), Faculté des Sciences, Université Ibn Tofail, BP 133, Kenitra 14000, Morocco
  2. Laboratoire de Spectrochimie Infrarouge et Raman, CNRS UMR 8516, Bât C5, Université des Sciences et Technologies de Lille, 59655 Villeneuve d’asq Cedex, France
  3. Laboratoire de Physico-Chimie des Matériaux, Associé à l’AUF (LAF 502), ENS Takaddoum, BP 5118, Rabat 10000, Morocco

Abstract

xV2O5–(50-x)CdO–50P2O5 (0 ≤ x ≤ 50 mol%) glasses were prepared and investigated using DSC, IR spectroscopy and Raman spectroscopy. For low concentrations of V2O5 (x ≤ 20 mol %), the formation of P–O–V bonds increases the crosslink strength of the glass network and leads to increased Tg. For x > 20 mol%, the infrared and Raman spectra show that the vanadium−oxygen structural units formed in the glasses are VO5 and VO4 groups forming chains with V−O−V bridges. The formation of the weaker V−O−V bonds compared with the stronger P–O–P bonds leads to decreased Tg..

Keywords

Glasses, V2O5–CdO–P2O5, DSC, Infrared spectroscopy, Raman spectroscopy.

Submitted at: March 2, 2010
Accepted at: May 26, 2010

Citation

N. KERKOURI, M. ET-TABIROU, A. CHAHINE, A. MAZZAH, M. C. DHAMELINCOURT, M. TAIBI, DSC and spectroscopic studies of the structure of V2O5–CdO–P2O5 glasses, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 5, pp. 1030-1034 (2010)