کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8251040 | 1533436 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electron beam induced modifications in conductivity and dielectric property of polymer electrolyte film
ترجمه فارسی عنوان
پرتو الکترون موجب تغییرات در هدایت و ویژگی دی الکتریک فیلم الکترولیت پلیمر شده است
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کلمات کلیدی
اکسید پلی اتیلن، تابش الکترونی پرتو، آرامش دی الکتریک، مدول الکتریکی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
چکیده انگلیسی
This paper describes the effect of 8 MeV of electron beam (EB) energy irradiation on the electrical conductivity and dielectric properties of sodium fluoride NaF-doped polyethylene oxide (PEO) film. The structural and chemical characterizations were employed using X-ray diffractometry (XRD) and Fourier Transform Infrared (FTIR) techniques respectively before and after irradiation. The morphology study carried out using Scanning Electronic Microscopy (SEM) analysis. The DC electrical conductivity showed increases with dose and temperature and was consistent with Arrhenius behavior. The maximum conductivity of 1.1 Ã 10â5 S/cm and minimum activation energy of 0.25 eV were obtained at 25 kGy, 338 K; further increases in the dose resulted in a reduction in conductivity. The real (εâ²) and imaginary (εâ³) part of the dielectric constant suddenly decreased in a low frequency region (40-640 Hz), subsequently independent at higher frequency. The AC conductivity showed increases with frequency and temperature for all films. The dielectric constant and AC conductivity increased at the 25 kGy dose due to chain scission. Further increases in dose such as 50 and 75 kGy, resulted in a decrease in dielectric constant and AC conductivity due to cross-linking. The electric modulus approach was used to calculate the dielectric relaxation time (Ï), which decreased at 25 kGy and then increased at 50 and 75 kGy doses. The modulus data were fitted using a non-exponential Kohlrausch-Williams-Watts (KWW) function Ï (t), and the results indicate the existence of a non-Debye relaxation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volumes 53â54, JuneâJuly 2013, Pages 56-64
Journal: Radiation Measurements - Volumes 53â54, JuneâJuly 2013, Pages 56-64
نویسندگان
S. Raghu, Subramanya Kilarkaje, Ganesh Sanjeev, H. Devendrappa,