Abstract
Polypyrrole doped with Toluene-p-sulfonate (PPy (TOS)) has been prepared electrochemically at different current densities. It was found that, electrical conductivity (a) has a great dependence on the current density i.e., (σ = 0.17 and 50 S/cm at j= 0.5 and 7.5 mA/cm2 respectively), conductivity has been fitted according to Mott’s equation in a wide range of temperature from 18 K to 200 K with a good agreement in 3D-system. In addition, it was observed that, polypyrrole samples have a strong positive magnetoresistance at very low temperatures and it has a quadratic behavior at small magnetic fields, up to H= 5T.
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Migahed, M.D., Fahmy, T., Roth, S. (1998). Electrical Transport and Magnetoconductivity in Doped Polypyrrole. In: Prasad, P.N., Mark, J.E., Kandil, S.H., Kafafi, Z.H. (eds) Science and Technology of Polymers and Advanced Materials. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0112-5_36
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DOI: https://doi.org/10.1007/978-1-4899-0112-5_36
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