TITLE:
Controllable Growth of Ni Nanocrystals Embedded in BaTiO3/SrTiO3 Superlattices
AUTHORS:
Zhengwei Xiong, Weidong Wu
KEYWORDS:
Nanocrystal; Superlattices; Self-organization
JOURNAL NAME:
Modeling and Numerical Simulation of Material Science,
Vol.3 No.1B,
January
21,
2013
ABSTRACT: BaTiO3/SrTiO3 superlattices with embedded Ni nanocrystals (NCs) have been grown on SrTiO3 (001) substrate using laser molecular beam epitaxy (L-MBE). In situ reflection high-energy electron diffraction (RHEED) was employed to investigate the process of lattice strain in the self-organization of Ni NCs and the epitaxial growth of BaTiO3/SrTiO3 superlattices. The results indicated that the strain from large lattice mismatch drove the self-organization of Ni NCs. Also, the layer-by-layer growth of BaTiO3/SrTiO3 superlattices Keywords: Nanocrystal; Superlattices; Self-organization 1. Introduction Oxide artificial superlattices, especially (001) oriented BaTiOsuperlattices and the island growth of Ni NCs were controllable ac-curately. The fine alternation of the two processes would provide a possible route to engineer controllably the nano-composite microstructure.