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Dielectric Relaxation in Composite Systems

Published online by Cambridge University Press:  10 February 2011

Frederick I. Mopsik
Frederick I. Mopsik*
Affiliation:
Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, frederick.mopsik@nist.gov
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Abstract

Dielectric relaxation phenomena have contributions from both the internal reorientation modes of the molecules comprising a material as well as the details of how those modes couple together to form the material. This behavior can change quite sensitively with changes in the composition of material. For a composite material that has more than one phase, the presence of phase boundaries and even shape can play an additional and large role in the observed relaxation behavior. Analysis of the relaxation spectra can be used to study these effects. Examples are shown, primarily of polymeric materials, ranging from liquid solutions to phase separated mixtures to show how dielectric relaxation over a wide frequency range can be used to characterize and study composite materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 411: Symposium T – Electricaly-Based Microstructural Characterization , 1995 , 357
Copyright
Copyright © Materials Research Society 1996

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References

REFERENCES

1. McCrum, N.G., Read, B.E.,, Williams, G., Anelastic and Dielectric Effects in Polymeric Solids, (Dover Publications, New York, 1991).Google Scholar
2. Denney, D. J., J. Chem. Phys. 30, 1019 (1959).Google Scholar
3. Mopsik, F. I., J. Poly. Sci. 31, 1989 (1993).Google Scholar
4. Walden, P., Z. Physik. Chem. 55, 207 (1906).Google Scholar
5. Debye, P., “Polar Molecules”, Dover (1947).Google Scholar
6. Harned, H. S., Owen, B. B., “The Physical Chemistry of Electrolytic Solutions”, Reinhold Publishing Corp., New York (1950).Google Scholar
7. Mopsik, F. I., Chang, S.-S., Hunston, D. L, Materials Eval. 47, 448, (1989).Google Scholar
8. Powles, J. G., J. Chem. Phys. 21 633 (1953).Google Scholar
9. Schen, M.A., Mopsik, F.I., Proc. of the SPIE 1560, 315 (1991).Google Scholar
10. Schen, M.A., Mopsik, F. I., Mat. Res. Soc. Symp. Proc. 247, 43 (1992).Google Scholar
11. Boyd, R. H., Macromol. 17, 217 (1984).Google Scholar
12. Bruggeman, D., Ann. Physik 24, 636 (1935).Google Scholar
13. Smith, R. S., J. Appl. Phys. 27, 824 (1956).Google Scholar
14. Landau, L.D., Lifshitz, E.M., Electrodynamics of Continuous Media, (Addison-Wesley, Reading 1960), p. 45.Google Scholar
15. Macdonald, J.R., ed., Impedance Spectroscopy, (John Wiley and Sons, New York, 1987).Google Scholar
16. Dragoo, A.L., Chiang, C.K., Franklin, A.D., Bethin, J., Solid State Ionics 7, 249 (1982).Google Scholar
17. Mopsik, F. I. Rev. Sci. Instr. 55, 79, (1984)Google Scholar