@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS052 prodottidellaricerca:prodotto prodotto:ID211470 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA5138 pubblicazioni:autoreCNRDi prodotto:ID211470 . @prefix modulo: . modulo:ID6131 prodottidellaricerca:prodotto prodotto:ID211470 . @prefix rdf: . prodotto:ID211470 rdf:type prodotto:TIPO1303 . @prefix retescientifica: . prodotto:ID211470 rdf:type retescientifica:ProdottoDellaRicerca . @prefix rdfs: . prodotto:ID211470 rdfs:label "Progress in the continuous deposition of YBCO coated conductors by thermal co-evaporation (Comunicazione a convegno)"@en . @prefix xsd: . prodotto:ID211470 pubblicazioni:anno "2006-01-01T00:00:00+01:00"^^xsd:gYear . @prefix skos: . prodotto:ID211470 skos:altLabel "
Edmondo Gilioli (2006)
Progress in the continuous deposition of YBCO coated conductors by thermal co-evaporation
in CIMTEC - International Conference on Modern Materials & Technologies, Acireale (CT, Italy), 4-9 Giugno 2006
"^^rdf:HTML ; pubblicazioni:autori "Edmondo Gilioli"^^xsd:string ; pubblicazioni:affiliazioni "IMEM-CNR, Parma, Italy"^^xsd:string ; pubblicazioni:titolo "Progress in the continuous deposition of YBCO coated conductors by thermal co-evaporation"^^xsd:string ; prodottidellaricerca:abstract "We report on recent progress towards the continuous deposition of YBCO Coated Conductors (CC) prepared by thermal coevaporation. This is an attractive vacuum technique thanks to the simplicity, low cost and intrinsic uniformity over large areas > 20 x 20 cm2. Here we describe the in situ preparation route of 1 um thick superconducting YBCO films deposited onto 100 nm thick CeO2 buffered Ni biaxially textured tapes using a simple-pass reel-to-reel system. In spite of the simple buffer layer architecture, we demonstrate the growth of dense and crack-free buffer layers with good biaxial texture and FWHM's values in the 5-7\u00B0 range for both in- and out-of-plane orientations. This enables the subsequent growth of the YBCO layer with similar structural properties, zero-resistance Tc=86-87 K and transition widths DeltaTc<3 K. End-to-end critical current densities Jc's at 77 K and self-field measured by transport measurements are in the 1.5-2.5 MA/cm2 range for 1 m long samples. It is found that tape motion does not significantly affect the above properties. We specifically address the following critical points regarding: 1) the deposition by thermal or e-beam evaporation of crack-free CeO2 buffer layers; 2) the in situ oxidation of the YBCO layer using a novel supersonic nozzle: 3) the scaling-up of the deposition process using a new multi-chamber system. Thanks to the simple buffer layer architecture, we show that the present route is promising for the industrial production of CC with a competitive cost < 20 Euro/kA m."@en ; prodottidellaricerca:prodottoDi istituto:CDS052 , modulo:ID6131 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA5138 .