Reversible Tc Change in Bi-Sr-Ca-Cu-O Thin Films by UV Photo and Thermal Annealings
Abstract
UV light irradiation in oxygen atmosphere was found to cause a change of critical temperature in Bi-Sr-Ca-Cu-O thin films. The change was observed to be reversible between 80 K after thermal annealing and 60 K after photo irradiation. It accompanied a change in the lattice constant, suggesting that further oxygen incorporation into the 80 K phase thin films occurred by the UV light irradiation.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- November 1988
- DOI:
- 10.1143/JJAP.27.L2227
- Bibcode:
- 1988JaJAP..27L2227K
- Keywords:
-
- Annealing;
- Bismuth Compounds;
- High Temperature Superconductors;
- Irradiation;
- Mixed Oxides;
- Thin Films;
- Calcium Compounds;
- Copper Oxides;
- Sputtering;
- Strontium Compounds;
- Ultraviolet Radiation;
- X Ray Diffraction;
- Solid-State Physics