Controllable Growth of Ni Nanocrystals Embedded in BaTiO<sub>3</sub>/SrTiO<sub>3</sub>Superlattices

• 作者: Weidong Wu Zhengwei Xiong
• 来源期刊: 材料科学建模与数值模拟(英文)
• 学科: 物理学
• 关键词: Nanocrystal SUPERLATTICES SELF-ORGANIZATION
• 年，卷（期）: 2013,（1）
• 页码范围: 4-8
• 页数: 5页
• 分类号: O4

摘要

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.