Author:
George CollinsDepartment of Biomedical Engineering, Medical Device Concept Laboratory, New Jersey Institute of Technology, 111 Lock St, Newark, NJ, 07103, USA

Search for other papers by George Collins in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

Numerical simulations of thermally stimulated polarization current profiles have been performed using rate expressions based on the Frohlich two-state model. The qualitative behavior of simulations previously published by other researchers can be reproduced. The important feature examined is a peak in the evolution of polarization with temperature, which results in a change in sign for the polarization current profile. The previous researchers have assigned this to a crossover of the kinetic transient polarization with the equilibrium polarization described by the Langevin approximation. The origin of the peak in the evolution of polarization has been reexamined and found to be the kinetic consequence of the structure of the Frohlich model. When the field is applied, the two-state model requires that half the available dipoles are initially polarized. This high level of polarized dipoles contributes to an increased rate of the reverse process, depolarization, at high temperatures and results in the calculated decrease in polarization. The constraints of the Frohlich two-state model are too severe to represent the kinetics of a physically plausible polar solid. Further the multiple modes of aggregation in the amorphous state impose complications on the computation of polarization current.

  • 1. McKeever, SWS, Hughes, DM. Thermally stimulated currents in dielectrics. J Phys D. 1975;8:1520 .

  • 2. van Turnhout, J. Thermally stimulated discharge of polymer electrets. Polym J. 1971;2: 2 173 .

  • 3. van Turnhout, J. Thermally stimulated discharge of electrets Sessler, GM, eds. Topics in applied physics: electrets. New York: Springer-Verlag; 1980 81201.

    • Search Google Scholar
    • Export Citation
  • 4. Teyssedre, G, Mezghani, S, Bernes, A, Lacabanne, C. Thermally stimulated currents in polymers Runt, JP, Fitzgerald, JJ, eds. Dielectric spectroscopy in polymeric materials. Washington DC: American Chemical Society; 1997 227258.

    • Search Google Scholar
    • Export Citation
  • 5. Frohlich, H. Theory of dielectrics: dielectric constant and dielectric loss. 1 New York: Oxford University Press; 1949 79ff.

  • 6. Glasstone, S, Laidler, KJ, Eyring, H. The Theory of Rate Processes. New York: McGraw-Hill; 1941 184ff.

  • 7. Linkens, A, Vanderschueren, J, Parot, P, Gasiot, J. Simulation of thermally stimulated dipolar processes in dielectrics. Comp Phys Commun. 1978;13:411419. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 8. Vanderschueren, J, Linkens, A, Gasiot, J, Fillard, JP, Parot, P. Simulation of field-induced thermally stimulated currents in dielectrics. Application to the dipolar case in polymeric systems. J Appl Phys. 1980;51: 9 49674975. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 9. Wolfram, S. The mathematica book. 3 New York: Wolfram Media/Cambridge University Press; 1996 1143.

  • 10. Debye, P. Polar molecules. New York: Dover Publications; 1929 27ff.

  • 11. Debenedetti, PG, Stillinger, FH. Supercooled liquids and the glass transition. Nature. 2001;410:259267. .

  • 12. Deschenes, LA, Vanden Bout, DA. Molecular motions in polymer films near the glass transition: a single molecule study of rotational dynamics. J Phys Chem B. 2001;105:11978 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Collapse
  • Expand

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jun 2022 0 0 0
Jul 2022 0 0 0
Aug 2022 0 0 0
Sep 2022 0 0 0
Oct 2022 1 0 0
Nov 2022 0 0 0
Dec 2022 0 0 0