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- Title
Ferroelectric properties of pulsed laser deposited PZT (92/8) thin films.
- Authors
Silva, J. P. B.; Rodrigues, S. A. S.; Sekhar, K. C.; Pereira, M.; Gomes, M. J. M.
- Abstract
The effect of pulse amplitude on the ferroelectric and switching properties of pulsed laser deposited PZT (92/8) thin films has been studied. The structural analysis revealed that the films had a well crystallized perovskite phase without secondary phases. The atomic force microscopy has been employed to estimate the grain size and surface roughness of the film. A well-saturated P–E hysteresis loop was observed with average values of remnant polarization (P r) ≈ 16.0 μC/cm 2, saturation polarization (P s) ≈ 21.7 μC/cm 2 and coercive field ≈138 kV/cm. The P–E loops were very stable with frequency, confirming that the contribution of the leakage current and/or mobile free charges to the polarization is minimum. The polarization current exhibits the exponential dependence on the pulse amplitude and the leakage current seems to be governed by the hopping mechanism which is generally associated to structural defects.
- Subjects
LEAD zirconate titanate films; FERROELECTRICITY; PULSED laser deposition; METALLIC thin films; PULSE amplitude modulation; CRYSTAL structure
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 12, p5097
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1529-z