Journal
APPLIED PHYSICS LETTERS
Volume 80, Issue 17, Pages 3195-3197Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1475369
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An epitaxial 200 nm thick film of Pb(Zr0.40Ti0.60)O-3 (PZT) has been deposited by reactive rf magnetron sputtering on conductive Nb-doped SrTiO3 (100) (STO). The patterning process involved electron-beam lithography of polymethylmethacrylate, fabrication of a 75 nm thick Cr hard mask layer by means of a lift-off process, and dry etching of PZT. The smallest PZT features obtained were 100 nm in lateral dimensions. Piezoelectric sensitive scanning force microscopy in the contact mode revealed a strong increase of the piezoelectric response for feature sizes with lateral dimensions below 300 nm. It is proposed that this behavior is mainly due to vanishing a domains. (C) 2002 American Institute of Physics.
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