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TeO2–WO3 Glasses: Infrared, XPS and XANES Structural Characterizations

✍ Scribed by P. Charton; L. Gengembre; P. Armand

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
285 KB
Volume
168
Category
Article
ISSN
0022-4596

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✦ Synopsis

Transparent (1Àx)TeO 2 -xWO 3 glasses with 0rxr0.325 mol were synthesized by the fast quenching technique. Several complementary techniques as infrared, X-ray photoelectron and X-ray absorption spectroscopies were used to approach the structure of these tungsten oxide-tellurite glasses. Special attention was paid to the oxidation state and the coordination state of tungsten atoms. The structural results show that (1Àx)TeO 2 -xWO 3 glasses present characteristic tellurium environments which vary with their chemical composition while tungsten ions always adopt an octahedral configuration. # 2002 Elsevier Science (USA)

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