| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kakazei, Gn
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Topics
Publications (8/8 displayed)
- 2019Probing the morphology of epitaxial Fe/MgO discontinuous multilayers by magnetometric techniquecitations
- 2018Activation parameters of conjugated polyaniline electrolyte via dielectric relaxation technique
- 2018Negative Magnetoresistance in Nanotwinned NiMnGa Epitaxial Filmscitations
- 2017Antiferromagnetic coupling between martensitic twin variants observed by magnetic resonance in Ni-Mn-Sn-Co filmscitations
- 2015Study of magnetoelastic and magnetocrystalline anisotropies in CoxN1-x nanowire arrayscitations
- 2011Isothermal structural transitions, magnetization and large piezoelectric response in Bi1-xLaxFeO3 perovskitescitations
- 2010Effect of Gd substitution on ferroelectric and magnetic properties of Bi4Ti3O12citations
- 2004Peculiar magnetic and electrical properties near structural percolation in metal-insulator granular layerscitations
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article
Activation parameters of conjugated polyaniline electrolyte via dielectric relaxation technique
Abstract
The synthesis and relaxation mechanism of polyaniline electrolyte in form of thin film by oxidative polymerization in the presence of inorganic acid have been reported. The films have been characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, 2-point probe and UV-Vis absorption spectroscopy. The mechanism of electrical conductivity for the disordered system has been explained in terms of Mott's variable-range hopping for the intrinsic conduction of the protonated long chain. The dielectric parameters including real part, imaginary part and loss tangent have been measured between the wavelength range 400 - 1100 nm. These have been employed in the determination of dielectric relaxation time tau which exhibits Arrhenius-like behaviour. Finally, the temperature dependent relaxation time which is a function of activation energy of dipole orientation otherwise known as Gibbs free energy Delta G(#), has been utilized in estimation of some thermodynamic parameters such as enthalpy Delta H-# and entropy Delta S-#. The SEM shows an aggregation of randomly oriented fibrous network of polyaniline on the surface of substrate. Fourier transform infrared confirms the acoustic vibrational modes of the long chain polymer.