Hopping Conduction Mechanism in Amorphous CuO-Bi2O3 Pellets |
| S.G. Motke Department of Physics, B.N. College of Engineering, Pusad, Dist-Yavatmal, 445 215, India D.K. Burghate Department of Physics, Shri Shivaji Science College, Amravati, India W.J. Gawande, S.V. Pakade and S.P. Yawale Material Research Laboratory, Department of Physics, Govt. Vidarbha Mahavidyalaya, Amravati, 444 604, India |
| Received: October 4, 1993; revised version: June 6, 1994 |
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| The transport properties of CuO-Bi2O3 pellets (pressed at room temperature 303 K) like dc electrical conductivity etc. are measured. The activation energy, dielectric constant etc. are reported. The hopping conduction is examined. Non-adiabatic hopping conduction is observed. The plot of -log σ versus 1/T is found to be linear. Activation energy of pellets containing CuO (80, 70, 60 mol%) shows electronic conduction while the pellet containing CuO (50 mol%) shows ionic conduction. The effect of content of CuO (mol%) and frequency on dielectric constant is also studied. The variation of dielectric constant with CuO (mol%) shows zigzag nature and may be due to the relaxation effects. |
| DOI: 10.12693/APhysPolA.86.969 PACS numbers: 72.80.Ng, 72.90.+y |