Structural control of self-assembled PbTiO{sub 3} nanoislands fabricated by metalorganic chemical vapor deposition
- Department of Electrical Engineering and Computer Sciences, Himeji Institute of Technology, 2167 Shosha, Himeji, Hyogo 671-2201 (Japan)
Self-assembled PbTiO{sub 3} nanoislands of three different shapes with orderly in-plane directions were fabricated on Pt/SrTiO{sub 3} 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/SrTiO{sub 3}(111) (101), and (001), respectively. The PbTiO{sub 3} nanoislands were epitaxially grown on the Pt/SrTiO{sub 3} substrates and consisted of {l_brace}100{r_brace} and {l_brace}001{r_brace} facets irrespective of the orientation of the substrates indicating that structural control of shape and in-plane direction of self-assembled PbTiO{sub 3} nanoislands can be achieved through epitaxial relations. The self-assembled PbTiO{sub 3} nanoislands with three different shapes were found to be ferroelectric by piezoresponse force microscopy.
- OSTI ID:
- 20702373
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 16 Vol. 86; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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