"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

IR and Raman investigation of x(CuO·V2O5)(1-x) [P2O5·CaF2] glass system

N. VEDEANU1, O. COZAR1,* , I. ARDELEAN1, B. LENDL2

Affiliation

  1. Babes-Bolyai University, Department of Biomedical Physics, Cluj-Napoca 400084, Romania
  2. Vienna University of Technology, Institute of Chemical Technologies and Analytics, A-1060 VIENNA, Austria

Abstract

x(CuO·V2O5)(1-x)[P2O5·CaF2] glass system with 0 x 40 mol% were investigated using IR and Raman spectroscopy in order to put in evidence the structural changes induced by the transition metal (TM) oxides (Cu2+ and V4+ ions). Both IR and Raman spectra presents the specific bands for the phosphate network. For x 7 mol% the depolymerization of the phosphate network appears and new short units or ring structural units occur. Non-bridging oxygen atoms are involved in the V-O-P and Cu-O-P bonds. 2D correlation spectroscopy method was also used for the analysis of the structural unit formation in these glasses. Hetero-spectral correlation analysis indicates that between the IR band at 840 cm-1 attributed to V-O-V stretching vibration and Raman band at 710 cm-1 and 1175 cm-1 attributed to P-O-P stretching vibration and PO2 stretching respectively exists a strong correlation. A correlation exist also between the IR band at ~ 650 cm-1 attributed to P-O-P symmetric stretching and the Raman band at 1175 cm –1 due to the symmetric stretching vibration of PO2 group..

Keywords

Glass, CuO-V2O5-P2O5-CaF2, Infrared spectroscopy, Raman scattering.

Submitted at: Oct. 14, 2005
Accepted at: Jan. 26, 2006

Citation

N. VEDEANU, O. COZAR, I. ARDELEAN, B. LENDL, IR and Raman investigation of x(CuO·V2O5)(1-x) [P2O5·CaF2] glass system, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 1, pp. 78-81 (2006)