Microstructures of YBa2Cu3O7 - x superconducting thin films grown on a SrTiO3(100) substrate
Abstract
We report microstructures of superconducting YBa2Cu3O7-x thin films epitaxially grown on a SrTiO3(100) substrate. Transmission electron microscopy studies reveal epitaxial, highly ordered grains ∼5000 Å in size for both types of films with either the a or c axis perpendicular to the film. Defects due to out-of-phase boundaries are observed in the former case. The high density of twin boundaries found in the latter case seems to correlate with the higher Jc observed in thin-film samples.
- Publication:
-
Applied Physics Letters
- Pub Date:
- March 1988
- DOI:
- 10.1063/1.99302
- Bibcode:
- 1988ApPhL..52..841C
- Keywords:
-
- High Temperature Superconductors;
- Microstructure;
- Mixed Oxides;
- Molecular Beam Epitaxy;
- Strontium Titanates;
- Superconducting Films;
- Superconductivity;
- Thin Films;
- Barium Oxides;
- Copper Oxides;
- Grain Boundaries;
- Yttrium Oxides;
- Solid-State Physics