Epitaxial lead zirconate titanate nanocrystals obtained by a self-patterning method
Journal
Integrated Ferroelectrics
Journal Volume
61
Pages
231-238
Date Issued
2004
Author(s)
Abstract
Epitaxial lead zirconate titanate nanoislands were obtained by a self-patterning method using 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. Nanostructures, as small as 20 nm lateral size with a height of 9 nm, were epitaxially grown on Nb-doped (001) SrTiO3 substrates. The forma-tion of nanostructures was investigated as a function of the initial film thickness and crystallisation condition. Single-crystal nanoislands were studied by scanning and high-resolution transmission electron microscopy, atomic force microscopy and X-ray diffraction. Ferroelectric switching of several individual islands was investi-gated by piezoresponse force microscopy.
SDGs
Type
journal article