DOI: 10.1063/1.357589. Ferroelectric properties and fatigue of PbZr0.51Ti0.49O3 thin films of varying thickness: Blocking layer model

Ferroelectric properties and fatigue of PbZr0.51Ti0.49O3 thin films of varying thickness: Blocking layer model

10.1063/1.357589

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Ferroelectric capacitors having Pt bottom and top electrodes and a ferroelectric film of composition PbZr0.51Ti0.49O3 (PZT) were fabricated and investigated. The PZT films of thicknesses varying from 0.12 to 0.69 μm were prepared by organometallic chemical-vapor deposition. Annealed capacitors were investigated by capacitance, hysteresis, and pulse switching measurements. It is found that the thickness dependence of the reciprocal capacitance, the coercive voltage, and the polarization measured by pulse switching can all be explained by a blocking layer model, in which a dielectric layer of thickness dbl and relative permittivity εbl is situated between the PZT film and an electrode. It is shown that (i) the coercive field is independent of thickness having a value of 2.4 V/μm; (ii) the ratio εbl/dbl is in the range 20–28 nm−1; (iii) the voltage across the blocking layer is proportional to the polarization, Vbl=cP, where c=4.1±0.5 V m2/C; and (iv) the polarization depends on the electric field in the PZT layer, independent of thickness. Pulse switching endurance measurements showed that in the saturation range the fatigue for these ferroelectric capacitors is determined by the pulse voltage and is independent of the thickness.

Bibliography

Larsen, P. K., Dormans, G. J. M., Taylor, D. J., & van Veldhoven, P. J. (1994). Ferroelectric properties and fatigue of PbZr0.51Ti0.49O3 thin films of varying thickness: Blocking layer model. Journal of Applied Physics, 76(4), 2405â2413.

Authors 4

P. K. Larsen (first)
G. J. M. Dormans (additional)
D. J. Taylor (additional)
P. J. van Veldhoven (additional)

References 23 Referenced 303

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Dates

Type	When
Created	23 years ago (July 26, 2002, 9:47 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 9:07 a.m.)
Indexed	1 month, 3 weeks ago (June 26, 2025, 6:45 a.m.)
Issued	31 years ago (Aug. 15, 1994)
Published	31 years ago (Aug. 15, 1994)
Published Print	31 years ago (Aug. 15, 1994)

Funders 0

None

BibTeX

@article{Larsen_1994, title={Ferroelectric properties and fatigue of PbZr0.51Ti0.49O3 thin films of varying thickness: Blocking layer model}, volume={76}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.357589}, DOI={10.1063/1.357589}, number={4}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Larsen, P. K. and Dormans, G. J. M. and Taylor, D. J. and van Veldhoven, P. J.}, year={1994}, month=aug, pages={2405–2413} }

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