J Mater Sci Technol ›› 1995, Vol. 11 ›› Issue (6): 443-446.

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Concentration and Temperature Dependence of Electrical Conductivity in Thermally Stable Chromium Polyacrylate

S. U.Rehman; M.Siddique and Farid A.Khwaja(Materials Research Laboratory, Dept. of Physics, Quaid-i-Azam University, Islamabad, Pakistan)M.S.Zafar(Dept. of Physics, University of the Punjab, Lahore, Pakistan)   

  • Received:1995-11-28 Revised:1995-11-28 Online:1995-11-28 Published:2009-10-10

Abstract: Electrical conductivity of chromium polyacrylate with dopant concentration 30, 40 and 50 wt-% of chromium has been measured over a broad range of temperatures (303 K to 383 K).The electrical conductivity shows dependence on temperature, as well as, level of doping. The conductivity is considered to be due to thermal hopping motion of localized charge carriers,which are believed to be polarons, in the temperature range 303 K to 323 K and for T>343 K,whereas. it is metal-like in the temperature range 323 K to 343 K