Preparation of TlCaBaCuO high-Tc superconducting thin films on LaAlO3 substrates
Abstract
Pure 2122 phase and 2223 phase superconducting TlCaBaCuO thin films have been reproducibly prepared on (100)LaAlO3 substrates by dc magnetron sputtering using a pair of superconducting Tl2Ca2B2Cu3O10 targets and post-annealing at different temperatures. X-ray diffraction analysis indicates that the films are highly c-axis oriented perpendicular to the film surface for both types of the thin films. The critical transition temperature Tc(R = 0) = 98 K and critical current Jc(77 K)=1.0×105 A/cm2 can be obtained for 2122 phase films, and for 2223 phase films Tc(R = 0) = 115 K and Jc(77 K) = 5.5 × 105 A/cm2 can be obtained.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- July 1991
- DOI:
- 10.1063/1.350268
- Bibcode:
- 1991JAP....70..526Y
- Keywords:
-
- High Temperature Superconductors;
- Superconducting Films;
- Thallium Compounds;
- Thin Films;
- Aluminum Oxides;
- Copper Oxides;
- Magnetron Sputtering;
- Substrates;
- Solid-State Physics