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Polarization reorientation in ferroelectric lead zirconate titanate thin films with electron beams

Published online by Cambridge University Press:  01 April 2006

D.B. Li ,
D.R. Strachan ,
J.H. Ferris  and
D.A. Bonnell
D.B. Li
Affiliation:
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104
D.R. Strachan
Affiliation:
Department of Physics and Astronomy and Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104
J.H. Ferris
Affiliation:
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104
D.A. Bonnell*
Affiliation:
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104
*
a) Address all correspondence to this author. e-mail: bonnell@lrsm.upenn.edu
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Abstract

Ferroelectric domain patterning with an electron beam is demonstrated. Polarization of lead zirconate titanate thin films is shown to be reoriented in both positive and negative directions using piezoresponse force and scanning surface potential microscopy. Reorientation of the ferroelectric domains is a response to the electric field generated by an imbalance of electron emission and trapping at the surface. A threshold of 500 μC/cm2 and a saturation of 1500 μC/cm2 were identified. Regardless of beam energy, the polarization is reoriented negatively for beam currents less than 50 pA and positively for beam currents greater than 1 nA.

Keywords

Electron irradiationFerroelectricFilm
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 4 , April 2006 , pp. 935 - 940
Copyright
Copyright © Materials Research Society 2006

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References

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