Cross-Sectional TEM Observation of Ba2YCu3O7-x Film on SrTiO3
Abstract
Ba2YCu3O7-x (BYCO) films epitaxially grown on (100) SrTiO3 substrates were examined by cross-sectional TEM. Near the film/substrate interfaces, the films consist of crystal grains whose boundaries have a regular atomic arrangement over the entire boundary area (coherent boundaries). The c axis of each crystal grain is oriented parallel to one of the three < 100> axes of the SrTiO3 substrate. Lattice constants measured with electron diffraction are a{=}b{=}c/3{=}0.390 nm. There are no mixed or amorphous layers at the interfaces.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- April 1988
- DOI:
- 10.1143/JJAP.27.L636
- Bibcode:
- 1988JaJAP..27L.636T
- Keywords:
-
- Barium Compounds;
- Cross Sections;
- Crystal Structure;
- Electron Microscopy;
- High Temperature Superconductors;
- Thin Films;
- Copper Oxides;
- Electron Diffraction;
- Epitaxy;
- Grain Boundaries;
- Strontium Titanates;
- Yttrium Compounds;
- Solid-State Physics