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Ac-Conductivity and Dielectric Properties of Neutron-Irradiated PAA films Doped with Cu+2 Ions | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 13, Issue 1, 2008, Pages 1-4 | ||
| Author | ||
| Qahatan.A.Abd Alkader | ||
| Abstract | ||
| The stability as well as the electrical properties of both un-irradiated and neutron irradiated poly acrylic acid (PAA) films doped with Cu+2 at a definite concentration of 12% have been studied. The dielectric loss tangent (tan δ) , electric conductivity (σ) and dielectric constant (Є) in the frequency range 100 Hz-20kHz were measured at different temperatures. It has been demonstrated that the suitable mechanism of conduction is the correlated barrier hopping model. The exponent (S) according to the relation σ (w) =A (w) s, was estimated and found to be less than unity and decreased with increasing the temperature. Furthermore a nonlinearly of log σ against log f was observed at log f in the range ( 3.3 to 4.6 ) for doses ≥20kGy at the temperature of 300 K and 380 K. | ||
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