In-situ deposition of YBCO/CeO/sub 2/ on biaxially textured Ni alloy tapes by thermal coevaporation (Articolo in rivista)

Type
Label
  • In-situ deposition of YBCO/CeO/sub 2/ on biaxially textured Ni alloy tapes by thermal coevaporation (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bindi M., Gianni L., Zannella S., Botarelli A., Baldini A., Gauzzi A., Tuissi A. (2003)
    In-situ deposition of YBCO/CeO/sub 2/ on biaxially textured Ni alloy tapes by thermal coevaporation
    in International journal of modern physics b
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bindi M., Gianni L., Zannella S., Botarelli A., Baldini A., Gauzzi A., Tuissi A. (literal)
Pagina inizio
  • 468 (literal)
Pagina fine
  • 476 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Edison SpA, I-20121 Milan, Italy 2. Europa Metalli SpoA, Superconductor Div, I-55052 Fornaci Di Barga, Lucca Italy 3. CNR, IMEM, I-43010 Fontanini, Parma Italy 4. CNR, IENI, I-23900 Lecco, Italy (literal)
Titolo
  • In-situ deposition of YBCO/CeO/sub 2/ on biaxially textured Ni alloy tapes by thermal coevaporation (literal)
Abstract
  • We report on the in-situ preparation and characterization of coated conductors consisting of a approximately=400 nm thick YBCO superconducting film grown by thermal co-evaporation on a approximately=200 nm thick CeO/sub 2/ buffer layer grown by e-beam evaporation on biaxially textured Ni-Cr and Ni-V substrates. We studied the degree of texture of both YBCO and CeO/sub 2/ layers as a function of substrate temperature during deposition and of oxygen partial pressure. X-ray diffraction patterns reveal that the highest degree of (100) texture of the buffer layer, necessary for the subsequent growth of the YBCO film with the desired c-axis orientation, is achieved at substrate temperatures of the order of 670-730 degrees C. The backfilling of the chamber with oxygen during the cooling-down of the substrates after deposition of the CeO/sub 2/ layer greatly improves the degree of crystallization of the buffer layer. YBCO films show good superconducting properties with critical temperatures T/sub c/ of the order of 87 K. Work is in progress to scale up the process for long tapes. (literal)
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