TITLE

Structural control of self-assembled PbTiO3 nanoislands fabricated by metalorganic chemical vapor deposition

AUTHOR(S)
Hajime Nonomura; Masaki Nagata; Hironori Fujisawa; Masaru Shimizu; Hirohiko Niu; Koichiro Honda
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p163106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Self-assembled PbTiO3 nanoislands of three different shapes with orderly in-plane directions were fabricated on Pt/SrTiO3 substrates by metalorganic chemical vapor deposition. The shapes of the nanoislands were triangular-shaped (width 50–110 nm, height 20–30 nm), triangular-prism-shaped (width 50–110 nm, length 100–550 nm, height 10–30 nm) and square-shaped (width 40–130 nm, height 4–10 nm) on Pt/SrTiO3(111), (101), and (001), respectively. The PbTiO3 nanoislands were epitaxially grown on the Pt/SrTiO3 substrates and consisted of {100} and {001} facets irrespective of the orientation of the substrates indicating that structural control of shape and in-plane direction of self-assembled PbTiO3 nanoislands can be achieved through epitaxial relations. The self-assembled PbTiO3 nanoislands with three different shapes were found to be ferroelectric by piezoresponse force microscopy.
ACCESSION #
17227508

 

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