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Journal of Research in Physics

The Journal of University of Novi Sad

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2217-933X
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Dielectric and structural properties of iron- and sodium-fumarates

Sonja Skuban
  • Corresponding author
  • Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Serbia, Tel.: +381 21 485 2824; Fax: +381 21 459 367
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/ Tanja Džomié
  • Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Serbia
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/ Agneš Kapor
  • Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Serbia
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/ Željka Cvejić
  • Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Serbia
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/ Srđan Rakic
  • Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Serbia
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  • De Gruyter OnlineGoogle Scholar
Published Online: 2013-08-13 | DOI: https://doi.org/10.2478/v10242-012-0010-2

Abstract

The behaviour of dielectric parameters such as the relative dielectric constant (ε''), the relative loss factor (ε'') and the ac conductivity of well known pharmaceutical materials Fe(II)-fumarate and Na-fumarate were studied as a function of temperature (in the range from 303K to 483 K) and frequency (in the range from 0.1 Hz to 100 kHz). The values of the conductivity are in the range of 10−5 Ω−1m−1 to 10−9 Ω−1m−1 for Fe(II)-fumarate and 10−6 Ω−1m−1 to 10−11 Ω−1m−1 for Na-fumarate. The conductivity of both materials increases with the increase in temperature and frequency. It was found that both ε' and ε'' decrease with increasing frequency and increase with increasing temperature for both materials. The highest changes are in the low frequency range. The obtained values of the dielectric parameters and conductivity suggest that these materials are dielectric with similar structure, most probably polymeric, with the mechanism of ionic conductivity.

Keywords: Fumaric acid salts; electrical characterization; powder diffraction; dielectric phenomena

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About the article

Published Online: 2013-08-13

Published in Print: 2012-01-01


Citation Information: Journal of Research in Physics, ISSN (Online) 2217-933X, DOI: https://doi.org/10.2478/v10242-012-0010-2.

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