Evaluation of dielectric relaxation parameters from TSDC analysis of pristine and ion irradiated kapton-H polyimide
✍ Scribed by Anu Sharma; Sridharbabu Yarramaneni; J.K. Quamara
- Book ID
- 104069963
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 266 KB
- Volume
- 269
- Category
- Article
- ISSN
- 0168-583X
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✦ Synopsis
The TSD currents of pristine and 75 MeV oxygen ion irradiated kapton-H polyimide were obtained in the temperature region 20-250 °C. The samples were polarized under different temperature windows (temperature regions in the absence of electric field) termed as window-I (75-55 °C) and window-II (90-75 and 55-20 °C). The TSDC characteristics consist of two current maxima termed as b 0 -peak and b-peak around 30 and 120 °C, respectively. The peak magnitude significantly depends on temperature windows. The strength of the b 0 -peak and b-peak is being affected in opposite modes in the pristine and ion irradiated samples, as pristine samples show an enhancement in the b 0 -peak while there appears a suppression in the b 0 -peak in case of ion irradiated samples. The precise determination of the dielectric relaxation parameters has been made by elementary Debye processes.