Eur. Phys. J. Appl. Phys.
Volume 51, Number 3, September 2010
|Number of page(s)||4|
|Section||Imaging, Microscopy and Spectroscopy|
|Published online||02 September 2010|
Structural studies of copper doped 2TeO2–PbO–Ag2O glass by FT-IR and Raman spectroscopies
Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
2 Institut de Ciencia de Materials de Barcelona, CSIC, Esfera UAB, 08193 Bellaterra, Spain
Corresponding author: email@example.com
Revised: 18 May 2010
Accepted: 23 June 2010
Published online: 2 September 2010
The FT-IR absorption and Raman scattering were used in order to obtain information concerning the short range order in xCuO·(100-x)[ 2TeO2·PbO·0.2Ag2O] (0 ≤ x ≤ 5 mol%) glasses. Moreover, the changes in tellurium atoms coordination that occurs with copper oxide addition were followed. Both techniques reveal that tellurium is disposed in the network structure in trigonal bipyramids (TeO4), trigonal pyramids (TeO3) along with TeO3+1 polyhedra units. Increasing the CuO content in the glasses changes the coordination of tellurium atoms from 4 to 3 through the so-called 3+1 intermediate units, simultaneously with the increase of the non-bridging oxygen (NBOs) ions amount causing a depolymerization process in the glass structure.
© EDP Sciences, 2010
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