Magneto-optical characterization of YBa2Cu3O7 film uniformity
- 15 April 1991
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 58 (15), 1676-1678
- https://doi.org/10.1063/1.105108
Abstract
Using a magneto‐optical technique, we have nondestructively imaged macroscopic variations in magnetic flux that penetrate laser‐ablated, c‐axis oriented, epitaxial YBa2Cu3O7 superconducting films deposited on crystalline (100)SrTiO3 substrates. Flux penetration into YBa2Cu3O7 films in an externally applied magnetic field is enhanced at crystalline substrate defect sites. A relationship between flux penetration and substrate defects is experimentally demonstrated with a YBa2Cu3O7 film deposited on an intentionally degraded crystalline SrTiO3 surface.Keywords
This publication has 7 references indexed in Scilit:
- Color imaging the magnetic field distribution in superconductorsReview of Scientific Instruments, 1990
- Large critical current densities in YBa2Cu3O7−x thin films made at high deposition ratesApplied Physics Letters, 1990
- Spatially resolved measurements of the resistive transition in epitaxial YBa2Cu3O7-filmsPhysica C: Superconductivity and its Applications, 1990
- Observation of flux penetration in YBa2Cu3O7−δ superconductors by means of the magneto-optical Faraday effectPhysica C: Superconductivity and its Applications, 1989
- Laser-assisted etching of YBa2Cu3O7−δApplied Physics Letters, 1989
- Epitaxial films of YBa2Cu3O7−δ on NdGaO3, LaGaO3, and SrTiO3 substrates deposited by laser ablationApplied Physics Letters, 1989
- High-resolution magneto-optical observation of magnetic structures in superconductorsPhysics Letters A, 1968