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Morphology Controlled Fabrication and Ferroelectric Properties of Vertically Aligned One-Dimensional Lead Titanate Nanoarrays

Morphology Controlled Fabrication and Ferroelectric Properties of Vertically Aligned One-Dimensional Lead Titanate Nanoarrays

Hwichan Jun, Badro Im, Kyung Hee Lee, Il Kyu Yang, Yoon Hee Jeong, Jae Sung Lee

Nanotechnology. 2012 Apr 6;23(13):135602.

PMID: 22417811

Abstract:

Vertically aligned nanowires and highly uniform nanoporous array thin films of PbTiO(3) are synthesized by varying anodic oxidation conditions of Ti foil followed by hydrothermal reaction in an aqueous Pb(II) acetate trihydrate solution. As-synthesized samples have single crystalline nanowire structure and polycrystalline nanoporous structure, although both are pure PbTiO(3) with a tetragonal phase. The structure of intermediate TiO(2) films obtained from different anodic oxidation conditions determines the structure of the product PbTiO(3). The relationships between these morphological structures and ferroelectric properties are investigated. Piezoresponse force microscopy reveals that both these films show ferroelectricity with clear phase contrast and well-defined hysteresis loops. The saturated longitudinal piezoelectric coefficient field (E(c)) of the nanowire sample is smaller than that of nanoporous thin film. Thus, polarization of nanowire thin film is larger in magnitude and easier to flip than that of nanoporous film.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12060003	Lead(II) titanate		12060-00-3	Price

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