Electrical conduction in nanoceramic PGT synthesised by high energy ball milling
الموضوعات : Journal of Theoretical and Applied PhysicsSKS Parashar 1 , Satyendra Narayan Singh 2 , Mahmood Ghoranneviss 3 , Swarat Chaudhuri 4
1 - School of Applied Sciences, KIIT University
2 - Department of Physics, Ranchi University
3 - Plasma Physics Research Center, Islamic Azad University
4 - Department of Physics, St. Xavier' s College,
Ranchi University
الکلمات المفتاحية: Nanocrystalline, High energy ball milling, Complex impedance spectroscopy, Activation energy, Correlated barrier hopping,
ملخص المقالة :
AbstractNanocrystalline Pb1–3x/2GdxTiO3 (where x = 0.01) abbreviated as PGT has been synthesised by high energy ball milling at room temperature. X-ray analysis shows that single-phase tetragonal structure of nanocrystalline PGT was formed after 15-h milling. The average crystallite size was found to be 17 nm. The frequency-dependent AC conductivity of the PGT ceramic was studied in the range 100°C to 525°C. Complex impedance analysis suggested the dielectric relaxation to be of non-Debye type. The activation energy was found to be 1.04 ev. The mechanism of charge transport in nanocrystalline PGT was successfully explained by correlated hopping model.
