Properties and structure of binary tin phosphate glasses
The properties and structures of binary xSnO*(100 − x)P 2O 5 (50 ≤ x ≤ 70 mol%) glasses were evaluated. The glass transition temperatures ( T g), determined by differential thermal analysis (DTA), range from 246 to 264 °C, for glasses prepared under identical conditions. The refractive index ( n D)...
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Published in | Journal of non-crystalline solids Vol. 357; no. 14; pp. 2690 - 2694 |
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Main Authors | , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Oxford
Elsevier B.V
01.07.2011
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | The properties and structures of binary
xSnO*(100 −
x)P
2O
5 (50
≤
x
≤
70 mol%) glasses were evaluated. The glass transition temperatures (
T
g), determined by differential thermal analysis (DTA), range from 246 to 264
°C, for glasses prepared under identical conditions. The refractive index (
n
D) increases from 1.701 to 1.833 as
x increases from 50 to 70, and the Abbe number (
ν
D) decreases from 29.1 to 20.4 over the same range. Infrared spectroscopy was used to estimate water contents in the glasses, which decreased with an increase in SnO content, from about 1570
ppm OH for
x
=
50 to about 50
ppm OH for
x
=
70, for glasses quenched from melts held at 1000
°C for 15
min. Residual water affects thermal properties, like
T
g, and variations in water contents due to differences in melt processing explain the wide variety of glass properties reported in the literature. Raman spectroscopy indicates that progressively shorter phosphate chains are present in the structures of the binary Sn-phosphate glasses with increasing SnO contents. |
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ISSN: | 0022-3093 1873-4812 |
DOI: | 10.1016/j.jnoncrysol.2010.12.061 |