✦ LIBER ✦
Cluster model of glass transition. The variation of Tg with cage vibrational frequency of Na+ ions in sodium borovanadate glasses
✍ Scribed by S. Muthupari; K.J. Rao
- Book ID
- 103035630
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 473 KB
- Volume
- 223
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The cage vibrational frequencies of Na+ ions in sodium borovanadate glasses have been examined using far-infrared spectroscopy. The glass transition temperature, T,, is found to vary linearly with the cage vibrational frequency, v. The variation of v has been related to the average excess partial charge on the cage oxygen atoms and hence to the force constant. The observed linear variation of T, as a function of v has been rationalized on the basis of the cluster model of glass transition.