Atomic structure of Ba0.5Sr0.5TiO3 thin films on LaAlO3
- 1. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6030 (United States)
- 2. Department of Physics and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204 (United States)
Description
Perovskite barium strontium titanate Ba0.5Sr0.5TiO3(BST) thin films were grown on (001) LaAlO3 (LAO) using pulsed-laser ablation. The microstructures of the as-grown BST films were studied with selected electron diffraction, transmission electron microscopy, and scanning transmission electron microscopy. The BST thin films are oriented with their [001] directions parallel to the left-angle 102 right-angle directions of the LAO. Both cross-sectional and plan-view studies show the BST films to be single crystals with smooth surfaces. The interfaces were seen to be atomically sharp by cross-sectional, high-resolution electron microscopy. The density of misfit dislocations was consistent with the 4.3% lattice mismatch, and they were found to be dissociated into partials. copyright 1999 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 75
- Journal Issue
- 17
- Journal Page Range
- p. 2542-2544
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 31001290
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM OXIDES; BARIUM COMPOUNDS; BARIUM OXIDES; CRYSTAL STRUCTURE; DISLOCATIONS; ELECTRON DIFFRACTION; INTERFACES; LANTHANUM OXIDES; MICROSTRUCTURE; PEROVSKITES; STRONTIUM COMPOUNDS; STRONTIUM OXIDES; THIN FILMS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIFFRACTION; ELECTRON MICROSCOPY; FILMS; LANTHANUM COMPOUNDS; LINE DEFECTS; MICROSCOPY; MINERALS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; STRONTIUM COMPOUNDS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS