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A Study of Switching Behavior in Pb(Zr,Ti) O3 Thin Films Using X-Ray Diffraction*

Published online by Cambridge University Press:  15 February 2011

Michael O. Eatough
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185–0342
Duane Dimos
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185–0342
Bruce A. Tuttle
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185–0342
William L. Warren
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185–0342
R. Ramesh
Affiliation:
Bellcore, Red Bank, NJ 07701
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Abstract

Pb(Zr,Ti)O3 (PZT) thin films are being developed for use in optical and electronic memory devices. To study ferroelectric switching behavior, we have produced relatively untextured PZT thin films on Si substrates. We have developed a method for using x-ray diffraction to observe domain switching in situ. Our study involved the use of a micro-diffractometer to monitor the switching behavior in relatively small (0.7mm diameter) electroded areas. Diffraction analyses were done while DC voltages were applied and removed, representing several places in the hysteresis loop. In particular, we were looking for relative intensity changes in the [h 00],[00l] diffraction peaks as a function of position in the hysteresis loop. Our study indicates that the 90° domain switching exhibited by bulk ferroelectrics, is very limited in films on Si when grain sizes are less than about 1 μm.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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Footnotes

*

This work performed at Sandia National Laboratories, which is operated for the U. S. Deparunent of Energy under contract number DE-AC04–94AL8500.

References

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