ISSN:
1573-482X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The effect of the tetragonality (c/a) ratio on photo-induced domain switching in (Pb1−xLax)TiO3 ferroelectric ceramics preliminarily poled at 1.5kVmm−1 was investigated by measuring photovoltaic current and acoustic emission (AE) signals. Results of total increment of photovoltaic current (Jpv), total AE event count and AE energy distribution showed that non-steady state behavior of Jpv was dominantly dependent on the activity of 90° domain switching during illumination. The activity of photo-induced domain switching was explained in terms of the coercive field and the space charge field. It was confirmed that the magnitudes of the space charge field and coercive field were found to be optimal for the photo-induced 90° domain switching at a c/a of 1.021.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008976628303
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