Reversible Resistivity Control of Ba2YCu3O7-δ Thin Films by Laser Annealing
- 1 April 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (4A) , L652-654
- https://doi.org/10.1143/jjap.27.l652
Abstract
Laser annealing of superconducting Ba2YCu3O7-δ (BYCO) thin films has been investigated by using a Nd:YAG cw laser. By laser irradiation at power densities higher than 1.4×105 W/cm2, superconducting polycrystalline films became amorphous and showed semiconductor-like temperature dependence on resistivity. The amorphization is apparently caused by a rapid quenching of molten BYCO after laser irradiation. The superconductivity of the film could be recovered by annealing the laser-irradiated film in a furnace. With this mask-free laser irradiation process, patterning of superconducting films can be achieved.Keywords
This publication has 6 references indexed in Scilit:
- Magnetron sputtering and laser patterning of high transition temperature Cu oxide filmsApplied Physics Letters, 1987
- DC-SQUID with High-Critical-Temperature Oxide-Superconductor FilmJapanese Journal of Applied Physics, 1987
- Pulsed laser etching of high T c superconducting filmsApplied Physics Letters, 1987
- Preparation of Y-Ba-Cu oxide superconductor thin films using pulsed laser evaporation from high T c bulk materialApplied Physics Letters, 1987
- Quantum interference devices made from superconducting oxide thin filmsApplied Physics Letters, 1987
- High Tc Yb-Ba-Cu-O Thin Films Deposited on Sintered YSZ Substrates by SputteringJapanese Journal of Applied Physics, 1987