Supraleitungs- und Tieftemperaturtechnik. Herstellung, Eigenschaften und Anwendungen kristalliner Hochtemperatur-Supraleiter Abschlussbericht

Abstract

1. Melt textured YBCO bulk materials possess unique properties regarding magnetic levitation and as permanent magnets. They obtain increasing international interest. 2. The project concentrated (i) on melt textured YBCO, (ii) on the analysis of effectiveness of pinning to enlarge the critical current density, and (iii) on the preparation and characterization of liquid pahse epitaxy films. 3. All relevant methods of preparation and characterization were used. 4. The melt textured YBCO multi-domain blocks developed in the frame of the project with diameter #approx# 3 cm and thickness of #approx# 1.5 cm corresponds to the international level. Relevant results were obtained concerning the analysis of the pinning effectiveness. For the first time we were able to prepare reproducibly a(b) YBCO LPE films. 5. Melt textured YBCO blocks are applied for first cryomagnetic applications in the energy and transport technique. Atomically flat YBCO LPE films are convenient as substrates for tunnel devices. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(34,60) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman