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E. A. Davis and N. F. Mott, “Conduction in Non-Crys- talline Systems V. Conductivity, Optical Absorption and Photoconductivity in Amorphous Semiconductors,” Philosophical Magazine, Vol. 22, No. 179, 1970, pp. 903- 922. doi:10.1080/14786437008221061

has been cited by the following article:

• TITLE: Electrical and Spectroscopic Studies of the CdO Substituted Lead Vanadate Glass System vs Crystalline Form

  AUTHORS: Ponnada Tejeswara Rao, Kocharlakota V. Ramesh, Devulapalli L. Sastry

  KEYWORDS: Transport Properties-ESR; Lead Vanadate; Semi Conducting Glasses

  JOURNAL NAME: New Journal of Glass and Ceramics, Vol.2 No.1, January 12, 2012

  ABSTRACT: Results of the direct current (DC) Electrical Conductivity, thermoelectric power and Electron Spin Resonance (ESR) of CdO substituted PbO-V2O5 glass system are reported. Conduction in these glasses is found to be electronic and the hoping of polaron seems to be the dominant process in the transport mechanism. There is a remarkable decrease in the activation energy for conduction in the annealed and devitrified samples when compared to their amorphous counter parts. It is observed that there is remarkable improvement in the conductivity of the crystalline samples when compared to their amorphous counter parts. The thermoelectric power measurements indicates that the amorphous samples are n-type at room temperature where as the crystalline samples are p-type at room temperature. In crystalline samples the hyperfine structure is nearly smeared out and a relatively broad line with an isotropic g value characterizes the spectra.