1. Growth mode mapping and structural properties of controlled perovskite BaTiO3/SrTiO3 heterostructure.
- Author
-
Li, Jin Long, Hao, J. H., Ying, Zhang, and Li, Yanrong
- Subjects
- *
PEROVSKITE , *EPITAXY , *MOLECULAR beam epitaxy , *HETEROSTRUCTURES , *MOLECULAR dynamics , *THIN films , *LOW temperatures - Abstract
Perovskite heteroepitaxy was investigated under various conditions using laser molecular beam epitaxy. Well-controlled BaTiO3/SrTiO3 heterostructure was studied with in situ reflective high energy electron diffraction and ex situ atomic force microscopy, x-ray diffraction, and transmission electron microscopy. The growth mode map of BaTiO3 thin films was obtained as a function of substrate temperature under 600 °C for various laser repetition rates. The effective activation energy of surface migration was determined to be 0.33 eV. A mechanism of surface migration in BaTiO3 heteroepitaxy was described for a basic understanding of atomic-scale controlled preparation of ferroelectric heterostructures at low temperature. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF