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Dielectric Spectroscopy at High Frequencies on Glass Forming Liquids

Published online by Cambridge University Press:  10 February 2011

P. Lunkenhemer ,
A. Pimenov ,
M. Dressel ,
B. Gorshunov ,
U. Schneider ,
B. Schiener ,
R. Böhmer  and
A. Loedl
P. Lunkenhemer
Affiliation:
Experimentalphysik V, Universität Augsburg, Universitätsstr. 2, D-86135 Augsburg, Germany
A. Pimenov
Affiliation:
Experimentalphysik V, Universität Augsburg, Universitätsstr. 2, D-86135 Augsburg, Germany
M. Dressel
Affiliation:
Experimentalphysik V, Universität Augsburg, Universitätsstr. 2, D-86135 Augsburg, Germany
B. Gorshunov
Affiliation:
Experimentalphysik V, Universität Augsburg, Universitätsstr. 2, D-86135 Augsburg, Germany
U. Schneider
Affiliation:
Experimentalphysik V, Universität Augsburg, Universitätsstr. 2, D-86135 Augsburg, Germany
B. Schiener
Affiliation:
Inst. für Festkörperphysik, TH Darmstadt, Hochschulstr. 6, D-64289 Darmstadt, Germany
R. Böhmer
Affiliation:
Inst. für Festkörperphysik, TH Darmstadt, Hochschulstr. 6, D-64289 Darmstadt, Germany
A. Loedl
Affiliation:
Experimentalphysik V, Universität Augsburg, Universitätsstr. 2, D-86135 Augsburg, Germany
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Abstract

Dielectric spectroscopy up to 950 GHz has been performed on various glass formers as glycerol, propylene-carbonate, and Salol. Special attention is given to the dielectric loss, ε″, in the crossover regime from the a-relaxation to the far-infrared (FIR) response where it can be directly compared to the dynamic susceptibilities obtained by neutron and light scattering techniques. We observe a minimum in ε″(ν) at high frequencies which cannot be explained by a simple transition from a-relaxation peak to the FIR bands but has to be attributed to additional fast processes. In all materials investigated, ε″(ν) increases significantly sublinear above the minimum. The ratio of the intensity of the α-process and the fast process as determined from our dielectric experiments is significantly higher compared to the results from the scattering experiments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 455: Symposium T – Glasses and Glass Formers–Current Issues , 1996 , 47
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Götze, W. and Sjögren, L., Rep. Progr. Phys. 55, 241 (1992).Google Scholar
2. Ngai, K.L., Comments Solid State Phys. 9, 121 (1979);Google Scholar
Ngai, K.L. in Disorder Effects on Relaxational Processes, edited by Richert, R. and Blumen, A. (Springer, Berlin 1994), p. 89.Google Scholar
3. Dixon, P.K., Wu, L., Nagel, S.R., Williams, B.D., and Carini, I.P., Phys. Rev. Lett. 65, 1108 (1990).Google Scholar
4. Menon, N. and Nagel, S.R., Phys. Rev. Lett. 74, 1230 (1995).Google Scholar
5. Wong, J. and Angeli, C.A. in Glass: Structure by Spectroscopy, M. Dekker, New York, 1974, p. 750.Google Scholar
6. Petry, W. and Wuttke, J., Transp. Theory Statist. Phys. 24, 1075 (1995)Google Scholar
7. Knaak, W., Mezei, F., and Farago, B., Europhys. Lett. 7, 529 (1988).Google Scholar
8. Li, G., Du, W.M., Chen, X.K., Cummins, H.Z., and Tao, N.Z., Phys. Rev. A 45, 3867 (1992).Google Scholar
9. Rössler, E., Sokolov, A.P., Kisliuk, A., and Quitmann, D., Phys. Rev. E 49, 14967 (1994).Google Scholar
10. Wuttke, J., Hernandez, J., Li, G., Coddens, G., Cummins, H.Z., Fujara, F., Petry, W., and Sillescu, H., Phys. Rev. Lett. 72, 3052 (1994).Google Scholar
11. Wuttke, J., Petry, W., Coddens, G., and Fujara, F., Phys. Rev. E 52, 4026 (1995).Google Scholar
12. Lunkenheimer, P., Pimenov, A., Dressel, M, Goncharov, Yu. G., Böhmer, R., and Loidl, A., Phys. Rev. Lett. 77, 318 (1996).Google Scholar
13. Volkov, A.A., Goncharov, Yu.G., Kozlov, G.V., Lebedev, S.P., and Prokhorov, A.M., Infrared Phys. 25, 369 (1985);Google Scholar
Volkov, A.A., Kozlov, G.V., and Prokhorov, A.M., Infrared Phys. 29, 747 (1989).Google Scholar
14. Mopsik, F.I., Rev. Sei. Instrum. 55, 79 (1984).Google Scholar
15. Böhmer, R., Maglione, M., Lunkenheimer, P., and Loidl, A., J. Appl. Phys. 65, 901 (1989).Google Scholar
16. Born, M. and Wolf, E., Principles of Optics, 6th edition, Pergamon Press, Oxford, 1980.Google Scholar
17. Angeli, C.A., J. Chem. Phys. Solids 49, 863 (1988).Google Scholar
18. Böhmer, R. and Angeli, C.A., Phys. Rev. B 45, 10091 (1992).Google Scholar
19. Sokolov, A.P., Steffen, W., and Rössler, E., Phys. Rev. E 52, 5105 (1995).Google Scholar
20. Franosch, T., Götze, W., Mayr, M., and Singh, A.P., preprintGoogle Scholar
21. Schönhals, A., Kremer, F., Hofmann, A., Fischer, E.W., and Schlosser, E., Phys. Rev. Lett. 70, 3459(1993).Google Scholar
22. Hofmann, A., Kremer, F., Fischer, E.W., and Schönhals, A., in Disorder Effects on Relaxational Processes, edited by Richert, R. and Blumen, A. (Springer, Berlin 1994), p. 309.Google Scholar
23. Lunkenheimer, P., Pimenov, A., Schiener, B., Böhmer, R., and Loidl, A., Europhys. Lett. 33, 611 (1996).Google Scholar
24. Davidson, D.W. and Cole, R.H., J. Chem. Phys. 19, 1485 (1951).Google Scholar
25. Cummins, H.Z., Li, G., Du, W., Pick, R.M., and Dreyfus, C., Phys. Rev. E 53, 896 (1996).Google Scholar
26. Strom, U., Hendrickson, J.R., Wagner, R.J., and Taylor, P.C., Solid State Commun. 15, 1871 (1977);Google Scholar
Strom, U. and Taylor, P.C., Phys. Rev. B 16, 5512 (1977);Google Scholar
Liu, C. and Angeli, C.A., J. Chem. Phys. 93, 7378 (1990).Google Scholar
27. Roland, C.M., Ngai, K.L., and Lewis, L.J., J. Chem. Phys. 103, 4632 (1995).Google Scholar
28. Roland, C.M. and Ngai, K.L., J. Chem. Phys. 103, 1152 (1995).Google Scholar
29. Sokolov, A.P., Kisliuk, A., Quitmann, D., Kudlik, A., and Rössler, E., J. Non-Cryst. Solids 172–174, 138 (1994); A.P. Sokolov, private communication.Google Scholar
30. Böhmer, R., Schiener, B., Hemberger, J., and Chamberlin, R.V., Z. Phys. B 99, 91 (1995).Google Scholar
31. For a compilation of dielectric results on the a-relaxation in PC see: Angeli, C.A., Boehm, L., Oguni, M., and Smith, D.L., J. Molecular Liquids 56, 275 (1993).Google Scholar
32. Du, W.M., Li, G., Cummins, H.Z., Fuchs, M., Toulouse, J., and Knauss, L.A., Phys. Rev. E 49, 14967 (1994).Google Scholar
33. Ma, J., Vanden Bout, D., and Berg, M., Phys. Rev. E 54, 2786 (1996).Google Scholar
34. Börjesson, L., Elmroth, M., and Toreil, L.M., Chem. Phys. 149, 209 (1990);Google Scholar
Börjesson, L. and Howells, W.S., J. Non-Cryst. Solids 131–133, 53 (1991).Google Scholar
35. Li, G., Du, M., Sakai, A., and Cummins, H.Z., Phys. Rev. A 46, 3343 (1992).Google Scholar
36. Lunkenheimer, P., Pimenov, A., and Loidl, A., submitted to Phys. Rev. Lett.Google Scholar