Abstract
The influence of defects introduced by fast neutron irradiation on the electric conductivity and current-voltage characteristics of Pb(Zr1-xTix)O3 solid solution is studied. It is found that defects cause a decrease in electric conductivity and an increase in activation energy. Moreover, a critical temperature is found upwards of which the PZT samples become sub-Ohmic in well defined ranges of external field strength. The introduction of defects broadens this field range and shifts it towards lower temperatures. These defect-induced changes are attributed not only to the increase in trap concentration but also to variations in energy distribution of the trap states.
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