Isothermal depolarization currents in triglycine sulphate |
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| Authors: | W Osak K Tkacz-?miech |
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| Institution: | (1) Institute of Physics and Computer Science, Pedagogical University, ul. Podchorążych 2, 30084 Kraków, Poland, PL;(2) Faculty of Materials Science and Ceramics, Technical University of Mining and Metallurgy, Al. Mickiewicza 30, 30059 Kraków, Poland (Fax: +48-12/33-15-93, E-mail: smiech@uci.agh.edu.pl), PL |
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| Abstract: | 5 s; the polarizing field was varied from 10 V/cm to 10 kV/cm, and the temperature between -190 °C and 25 °C.
The results confirm that the depolarization current in TGS follows the formula Id∼(ωpt)n+(ωpt)m]-1, where n<1 and m>1. The values of the parameters n and m depend on both the electric field strength and the polarization
time as well as on the temperature of the experiment. The loss peak frequency ωp exhibits activation character: ωp∼exp(-E/kBT) with E=0.34 eV at temperatures directly below room temperature and E=0.013 eV in the range of liquid nitrogen temperatures.
Received: 1 April 1997/Accepted: 7 April 1997 |
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| Keywords: | PACS: 77 30 +d 77 80 -e |
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