Abstract
The Brillouin light scattering technique was used to study short time relaxations in glass forming oxide melts. The line shape analysis of Brillouin spectra yields a complex mechanical modulus. The temperature dependence of this modulus provides insight into the structural disintegration above the glass transition, as well as the thermally activated mechanisms which facilitate the momentum transport in the process of viscous dissipation. A series of binary and ternary alkali borates and alkali silicates have been investigated. The results show fundamental differences in the way alkali cations affect the network structure in borates as compared to silicates. While these cations move relatively freely within the rigid silicate network, their motions are strongly coupled to the network relaxation in borates. The activation energies for cation motion are in good agreement with those found by other methods.
| Original language | English (US) |
|---|---|
| Title of host publication | Crystallization and Related Phenomena in Amorphous Materials |
| Editors | Matthew Libera, Tony E. Haynes, Peggy Cebe, James E. Dickinson Jr. |
| Publisher | Publ by Materials Research Society |
| Pages | 203-208 |
| Number of pages | 6 |
| Volume | 321 |
| ISBN (Print) | 1558992200 |
| State | Published - 1994 |
| Event | Proceedings of the 1993 Fall Meeting of the Materials Research Society - Boston, MA, USA Duration: Nov 29 1993 → Dec 3 1993 |
Other
| Other | Proceedings of the 1993 Fall Meeting of the Materials Research Society |
|---|---|
| City | Boston, MA, USA |
| Period | 11/29/93 → 12/3/93 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
Cite this
Visco-elastic relaxations in alkali borates and alkali silicates. / Kieffer, J.; Masnik, J. E.; Reardon, B. J.; Bass, Jay D.
Crystallization and Related Phenomena in Amorphous Materials. ed. / Matthew Libera; Tony E. Haynes; Peggy Cebe; James E. Dickinson Jr. Vol. 321 Publ by Materials Research Society, 1994. p. 203-208.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Visco-elastic relaxations in alkali borates and alkali silicates
AU - Kieffer, J.
AU - Masnik, J. E.
AU - Reardon, B. J.
AU - Bass, Jay D
PY - 1994
Y1 - 1994
N2 - The Brillouin light scattering technique was used to study short time relaxations in glass forming oxide melts. The line shape analysis of Brillouin spectra yields a complex mechanical modulus. The temperature dependence of this modulus provides insight into the structural disintegration above the glass transition, as well as the thermally activated mechanisms which facilitate the momentum transport in the process of viscous dissipation. A series of binary and ternary alkali borates and alkali silicates have been investigated. The results show fundamental differences in the way alkali cations affect the network structure in borates as compared to silicates. While these cations move relatively freely within the rigid silicate network, their motions are strongly coupled to the network relaxation in borates. The activation energies for cation motion are in good agreement with those found by other methods.
AB - The Brillouin light scattering technique was used to study short time relaxations in glass forming oxide melts. The line shape analysis of Brillouin spectra yields a complex mechanical modulus. The temperature dependence of this modulus provides insight into the structural disintegration above the glass transition, as well as the thermally activated mechanisms which facilitate the momentum transport in the process of viscous dissipation. A series of binary and ternary alkali borates and alkali silicates have been investigated. The results show fundamental differences in the way alkali cations affect the network structure in borates as compared to silicates. While these cations move relatively freely within the rigid silicate network, their motions are strongly coupled to the network relaxation in borates. The activation energies for cation motion are in good agreement with those found by other methods.
UR - http://www.scopus.com/inward/record.url?scp=0028257443&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028257443&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0028257443
SN - 1558992200
VL - 321
SP - 203
EP - 208
BT - Crystallization and Related Phenomena in Amorphous Materials
A2 - Libera, Matthew
A2 - Haynes, Tony E.
A2 - Cebe, Peggy
A2 - Dickinson Jr., James E.
PB - Publ by Materials Research Society
ER -