Objetivo The project objective is to fabricate good quality films of high critical temperature (high-Tc) superconductors and to fabricate Josephson devices made of niobium niobium oxide lead materials (Nb-NbOx-Pb) and characterise their microwave response. High-Tc thin films are fabricated using sputtering, electron-beam evaporation and spin-on methods and various kinds of substrates are being explored that yield high quality thin films. The long range objective is to master the fabrication, patterning and barrier growth techniques that would be required to fabricate Josephson devices based on high-Tc materials and to make useful devices of them. Thick films of high-Tc superconductors have been prepared on various substrate materials. The effect of the substrate material and the firing temperature on the superconducting properties was studied. Measurements were carried out of the resistance noise of normal superconductor composites of the critical current. Thin films of high-Tc superconductors have been fabricated by electron beam evaporation using multilayer techniques and by using top down sputtering, off axis rf sputtering and laser deposition on various substrates.An experimental investigation was made of the tunelling phenomena in normal superconducting (N-S) contacts. Normal metals used were copper, indium and tungsten. Measured current voltage characteristics exhibited a tunnelling conductance which was linear in the applied voltage and which was asymmetrical with respect to a reversal of the voltage polarity.2 studies were carried out on Josephson tunnels. One was in respect to nonlinear dynamics of Josephson junctions and half harmonic generation in long Josephson tunnel junctions and the second on coupled Josephson soliton oscillators. Programa(s) IC-ISC C - Activity (Euratom, EEC) on cooperation in science and technology, 1984- Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador TECHNICAL UNIVERSITY OF DENMARK Aportación de la UE Sin datos Dirección Building 307 2800 LYNGBY Dinamarca Ver en el mapa Coste total Sin datos
