Open Access Nano Express

Self-Organized Ni Nanocrystal Embedded in BaTiO3 Epitaxial Film

FF Ge12, XM Wang1, LH Cao1, J Li1, HL Zhang13, HP Wang1, Y Dai1, HB Wang1, J Shen1 and WD Wu1*

Author Affiliations

1 Research Center of Laser Fusion, CAEP, P.O. Box 919-983, 621900, Mianyang, China

2 Department of Physics, Tongji University, 20092, Shanghai, China

3 Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Physical Science and Technology School, Lanzhou University, 730000, Lanzhou, China

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Nanoscale Research Letters 2010, 5:834-838  doi:10.1007/s11671-010-9570-9

Published: 14 March 2010

Abstract

Ni nanocrystals (NCs) were embedded in BaTiO3 epitaxial films using the laser molecular beam epitaxy. The processes involving the self-organization of Ni NCs and the epitaxial growth of BaTiO3 were discussed. With the in situ monitoring of reflection high-energy electron diffraction, the nanocomposite films were engineered controllably by the fine alternation of the self-organization of Ni NCs and the epitaxial growth of BaTiO3. The transmission electron microscopy and the X-ray diffraction characterization confirmed that the composite film consists of the Ni NCs layers alternating with the (001)/(100)-oriented epitaxial BaTiO3 separation layers.

Keywords:
Laser molecular beam epitaxy; Nanocomposite film; Reflection high-energy electron diffraction; Self-organization; Epitaxial growth