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Start Over Author "Broadbridge, Christine" Journal applied physics letters
3 results on '"Broadbridge, Christine"'

3. Origin of 90° domain wall pinning in Pb(Zr0.2Ti0.8)O3 heteroepitaxial thin films.

Author

Su, Dong, Meng, Qingping, Vaz, C. A. F., Han, Myung-Geun, Segal, Yaron, Walker, Fred J., Sawicki, Monica, Broadbridge, Christine, and Ahn, Charles H.

Subjects
TRANSMISSION electron microscopy, ELECTRON microscopy, SCANNING transmission electron microscopy, FERROELECTRIC crystals, VECTOR analysis
Abstract

We describe a transmission-electron-microscopy study of the ferroelectric domains in an epitaxial Pb(Zr0.2Ti0.8)O3 (PZT) film grown on La0.7Sr0.3MnO3/SrTiO3(001). We directly observe the pinning of 90° domain walls by pairs of misfit dislocations, respectively, with Burgers vectors a [100] and a [001]. Model calculations based on the elastic theory confirm our finding that, in addition to the depolarization field surrounding the dislocation, the strain field of misfit dislocation-pairs plays the primary role in the formation and pinning of a domains. [ABSTRACT FROM AUTHOR]

Published
2011
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