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Visco-Elastic Relaxations in Alkali Borates and AlkaliSilicates

Published online by Cambridge University Press:  15 February 2011

J. Kieffer ,
J. E. Masnik ,
B. J. Reardon  and
J. D. Bass
J. Kieffer
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
J. E. Masnik
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
B. J. Reardon
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
J. D. Bass
Affiliation:
Department of Geology, University of Illinois at Urbana-Champaign
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Abstract

The Brillouin light scattering technique was used to study short timerelaxations in glass forming oxide melts. The line shape analysis ofBrillouin spectra yields a complex mechanical Modulus. The temperaturedependence of this modulus provides insight into the structuraldisintegration above the glass transition, as well as the thermallyactivated mechanisms which facilitate the momentum transport in the processof viscous dissipation.

A series of binary and ternary alkali borates and alkali silicates have beeninvestigated. The results show fundamental differences in the way alkalications affect the network structure in borates as compared to silicates.While these cations move relatively freely within the rigid silicatenetwork, their motions are strongly coupled to the network relaxation inborates. The activation energies for cation motion are in good agreementwith those found by other methods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 203
Copyright
Copyright © Materials Research Society 1994

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References

1 Angell, C.A., Materials for Solid State Batteries. Chowdari, B.V.R. and Radhakrishna, S., eds., pp. 31 Google Scholar
2 Borjesson, L., Torell, L.M., Martin, S.W., Liu, C. and Angell, C.A., Phys. Letters 125, 330 (1987)Google Scholar
3 Minami, T. and Nachida, N., Mat. Chem. Phys. 23, 63 (1989)Google Scholar
4 Macedo, P.B., Moynihan, C.T. and Bose, R., Phys. Chem. Glasses 13, 171 (1972)Google Scholar
5 Mountain, R.D., Journal of Research of the NBS 70A, 207 (1966)Google Scholar
6 Tao, N.J., Li, G. and Cummins, H.Z., Phys. Rev. B 43, 5815 (1991)Google Scholar
7 Götze, W. and Lücke, M., Phys. Rev. A11, 2173 (1975)Google Scholar
8 Herzfeld, K.F. and Litovitz, T.A., Absorption and Dispersion of Ultrasonic Waves. Academic Press N. Y. 1959 Google Scholar
9 Masnik, J.E., Kieffer, J. and Bass, J.D., Mat. Res. Soc. Symp. Proc. 248, 505 (1992)Google Scholar
10 Masnik, J.E., Kieffer, J. and Bass, J.D., J. Am. Ceram. Soc. 72, (1993) acceptedGoogle Scholar
11 Angeli, C.A., “Strong and Fragile Liquids”, in Relaxations in Complex Systems. Ngai, K. and Wright, G.B., eds., National Information Service, U.S. Department of Commerce, Springfield, VA 22161 (1985)Google Scholar
12 Shelby, J.E. Jr, and Day, D.E., J. Am. Ceram. Soc. 52, 169 (1969)Google Scholar