Superconducting properties of Tl-Ba-Ca-Cu-O films on silver substrates
Abstract
Films of Ba-Ca-Cu-O have been RF magnetron sputtered onto Consil 995 substrates. A post deposition anneal in an over pressure of Tl produces the superconducting 1212 and 2212 phases. Varying the annealing procedures changes the electrical properties of the final films dramatically. Dynamic impedance, a novel approach to the electrical characterization of these films on a conductive substrate is discussed and compared with SEM, XRD and RBS measurements as a function of differing annealing protocols.
- Publication:
-
Astrophysical Processes and Structures in the Universe
- Pub Date:
- 1990
- Bibcode:
- 1990apsu.confQ..24D
- Keywords:
-
- Barium Oxides;
- Calcium Oxides;
- Copper Oxides;
- High Temperature Superconductors;
- Magnetron Sputtering;
- Silver;
- Superconducting Films;
- Thallium Compounds;
- Annealing;
- Electron Microscopes;
- Impedance;
- Microstructure;
- Radio Frequencies;
- Substrates;
- Superconductivity;
- X Ray Diffraction;
- Solid-State Physics