Nano Archive

Controllable growth of nanocomposite films with metal nanocrystals sandwiched between dielectric superlattices

Ge, Fangfang and Wang, Xuemin and Li, Yunong and Cao, Linhong and Zhang, Hongliang and Wang, Hongbin and Wu, Weidong (2011) Controllable growth of nanocomposite films with metal nanocrystals sandwiched between dielectric superlattices. Journal of Nanoparticle Research, 13 (12). pp. 6447-6453.

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Abstract

Nanocomposite films, with Ni nanocrystals (NCs) (5–8 nm) embedded within SrTiO3/BaTiO3 superlattice (period: 30 nm), were prepared by laser molecular beam epitaxy. In situ reflection high-energy electron diffraction was employed to study the role of lattice strain in the self-organization of NCs and the epitaxial growth of SrTiO3/BaTiO3 superlattice. It was found that the strain from large lattice mismatch drove the self-organization of Ni NCs. Also the SrTiO3/BaTiO3 epitaxial growth was achieved on the NC-dotted irregular interface, because the epitaxial growth occurred preferably at sites with low strain. The fine alternation of the two processes would provide a possible route to engineer controllably the nanocomposite microstructure.

Item Type:Article
ID Code:11486
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Jan 2012 09:30
Last Modified:05 Jan 2012 09:42

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