Effect of ferroelectric polarization on current response of PZT thin films

A strong influence of ferroelectric polarization on d.c. conduction has been observed in PZT thin films with Pt electrodes. It is shown that the current-voltage response taken for measuring times of hundreds of seconds at room temperature is controlled by the crossover from the transient to steady-state conduction regime. In the transient regime the current flowing against the initial direction of the ferroelectric polarization is higher than that flowing in the reverse direction. In the steady-stare regime a current asymmetry of the opposite sense is observed. At elevated temperatures (150-200 degrees C) the asymmetry in both regimes is strongly suppressed. A Maxwell-Wagner relaxation model with ferroelectric and non-ferroelectric capacitors can qualitatively explain the observed phenomena.


Published in:
Integrated Ferroelectrics, 10, 1-4, 189-204
Year:
1995
ISSN:
1058-4587
Keywords:
Note:
Tagantsev, AK Ecole Polytech Fed Lausanne,Lab Ceram,Ch-1015 Lausanne,Switzerland
Tw255
Times Cited:18
Cited References Count:27
Laboratories:




 Record created 2006-08-21, last modified 2018-03-17


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)