Characterization of Y-Ba-Cu-Oxide superconductor thin films prepared by excimer laser evaporation

✍ Scribed by Hanns-Ulrich Habermeier; Gu¨nter Mertens

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 156 KB
• Volume: 153-155
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(88)90355-3

✦ Synopsis

We prepared superconducting Y-Ba-Cu-Oxide films using the technique of pulsed laser evaporation of the constituents from a sintered superconducting target onto heated SrTiO 3 single crystal substrates in a high vacuum chamber.Depending on the substrate temperature during evaporation and the temperature time profile in a subsequent annealing procedure we obtained specimens with critical temperatures exceeding 80 K and a transition width less than 5 K. X-ray diffractometry shows that our specimens consist of single phase orthorhombic material with a strong texture ( c-axis of the orthorhombic crystal is perpendicular to the film plane ).