The effects of added CuO on the electrical properties of Na2B4O7-Pb3O4glasses

Kutub, A. A.; Maghrabi, K. A.; Hogarth, C. A.

doi:10.1080/00207218608920882

Cited by 5 publications

(1 citation statement)

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“…Kutub et al [4][5][6][7][8][9] have reported the optical and electrical properties of sodium tetraborate glasses with addition of different oxides. In the present work we report dynamic response on Na2B40~(99.5%)-V205(0.5%) system in the frequency range 10 -3 to 104 Hz and temperature range 300 to 500 K.…”

Section: K Anis (1)mentioning

confidence: 98%

Frequency domain measurements on Na2B4O7−V2O5 semiconducting glass

et al. 1994

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Summary. --Dielectric measurements on NaeB407(99.5%)-VeOs(0.5%) glass system, in the frequency range 10-8 to 104 Hz and temperature range 300 to 500 K, have been carried out. The normalized plots of complex capacitance have shown a single mechanism responsible for conduction for both volume and surface measurements with their close values of activation energies (0.67 + 0.03) eV and (0.64 _+ 0.03)eV, respectively. The low-frequency dispersion (LFD) behaviour has been observed to be perturbed by the presence of more than one competing process. The impedance plots have shown a parallel combination of a capacitor (C) and a resistor (R), with some contribution of a dispersive element due to charge accumulation in the vicinity of the electrodes. The values of R and C were found to be of the same order of magnitude, for both surface and volume measurements. The observed R has shown a decrease with an increase in temperature due to an increase in mobility of Na § ions, whereas C remains practically constant. The complex capacitance surface behaviour is dominated by volume, due to hygroscopy of this glass system. PACS 72.80 -Conductivity of specific semiconductors and insulators. PACS 77.40 -Dielectric loss and relaxation.

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