Superconducting Bi-Sr-Ca-Cu-O Thin Films by Sputtering
- 1 June 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (6A) , L1097
- https://doi.org/10.1143/jjap.27.l1097
Abstract
BiSrCaCu2O x thin films were prepared by rf magnetron sputtering. Superconducting transitions were observed for the films on MgO after postdeposition annealing at 870°C and above. The appearance of a superconducting transition at a temperature of about 120 K for the film necessitated annealing at close to, but not above, its melting point near 900°C: the appropriate annealing temperature range was from 875 to 900°C. It was noteworthy that the 910°C annealed film showed a superconducting characteristic as well as the 870°C annealed film, in spite of their crystal structures being entirely different. Besides annealing temperature, cooling rate from annealing temperature, film thickness and substrate dependences of superconductivity in the BiSrCaCu2O x thin film were also investigated.Keywords
This publication has 5 references indexed in Scilit:
- Superconductivity and Substrate Interaction of Screen-Printed Bi-Sr-Ca-Cu-O FilmsJapanese Journal of Applied Physics, 1988
- Magnetron Sputtering of Bi-Ca-Sr-Cu-O Thin Films with Superconductivity above 80 KJapanese Journal of Applied Physics, 1988
- Preparation of High-Tc Bi-Sr-Ca-Cu-O SuperconductorsJapanese Journal of Applied Physics, 1988
- A New High-Tc Oxide Superconductor without a Rare Earth ElementJapanese Journal of Applied Physics, 1988
- Thickness Dependence of Superconductivity in As-Sputtered Er-Ba-Cu-O Thin FilmsJapanese Journal of Applied Physics, 1987