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Temperature shift of the optical gap in some PbO–ZnO–P2O5 glasses

✍ Scribed by J. Schwarz; H. Ticha; L. Tichy


Book ID
113790113
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
178 KB
Volume
61
Category
Article
ISSN
0167-577X

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Some PbO-Al2O3-P2O5 glasses have been investigated using 31P and 27Al magic-angle spinning nuclear magnetic resonance. The observed spectra could be divided into two groups. In the first, Al(IV), Al(V) and Al(VI) are observed, the 31P linewidths are large and the chemical shift range (-30 to -36 ppm