Unusual size effect on the polarization patterns in micron-size Pb(Zr,Ti)O-3 film capacitors

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Direct observation of polarization distribution at nanoscale by scanning force microscopy across partially etched Pb(Zr,Ti)O-3 film ferroelectric capacitors with size 2x3 mum and preferential orientation (111) has revealed an anomalous polarization pattern characterized by polarization inversion in the center of the capacitor. This self-structured pattern is reproducible and independent on the spontaneous polarization orientation, but strongly influenced by the film texture and capacitor size. In particular, capacitors of the same texture with size 0.5x0.5 mum as well as capacitors with (100) preferential orientation of any size did not exhibit such anomalous polarization distribution. A tentative explanation consistent with the essential features of the observed polarization behavior in terms of strain-induced phase transition is discussed. (C) 2002 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2002-06
Language
English
Article Type
Article
Citation

APPLIED PHYSICS LETTERS, v.80, no.25, pp.4804 - 4806

ISSN
0003-6951
DOI
10.1063/1.1489478
URI
http://hdl.handle.net/10203/220325
Appears in Collection
MS-Journal Papers(저널논문)
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