Ferroelectric epitaxial nanocrystals obtained by a self-patterning method

Szafraniak, I.; Harnagea, C.; Scholz, R.; Bhattacharyya, S.; Hesse, D.; Alexe, M.
September 2003
Applied Physics Letters;9/15/2003, Vol. 83 Issue 11, p2211
Academic Journal
Lead zirconate titanate nanoislands were obtained by a self-patterning method making use of the instability of ultrathin films during high-temperature treatments. After high-temperature annealing, the as-deposited film breaks into islands with a narrow size distribution. The single-crystal nanoislands were studied by scanning and high-resolution transmission electron microscopy, atomic force microscopy, and x-ray diffraction. They show an epitaxial relationship with the Nb-doped (001) SrTiO[sub 3] substrate. The ferroelectric switching of several individual islands was investigated by piezoresponse force microscopy. © 2003 American Institute of Physics.


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