Controllable Growth of Ni Nanocrystals Embedded in BaTiO₃/SrTiO₃ Superlattices

Zhengwei Xiong, Weidong Wu

Science and Technology on Plasma Physics Laboratory Research Center of Laser Fusion, China Academy of Engineering Physics Mianyan, China.

DOI: 10.4236/mnsms.2013.31B002                

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.

Keywords

Nanocrystal; Superlattices; Self-organization

Conflicts of Interest

The authors declare no conflicts of interest.

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