The role of strain in the superconductivity of Nd-doped YBCO films deposited by diode high pressure oxygen sputtering (Contributo in atti di convegno)

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  • The role of strain in the superconductivity of Nd-doped YBCO films deposited by diode high pressure oxygen sputtering (Contributo in atti di convegno) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.physc.2004.02.018 (literal)
Alternative label
  • Salluzzo, M. and Aruta, C. and Ausanio, G. and di Uccio, U. S. and Vaglio, R. (2004)
    The role of strain in the superconductivity of Nd-doped YBCO films deposited by diode high pressure oxygen sputtering
    in The International Conference on Materials and Mechanisms of Superconductivity. High Temperature Superconductors VII -- M2SRIO, Hotel Intercontinental, Rio De Janeiro, Brazil, 25-30 Maggio, 2003
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Salluzzo, M. and Aruta, C. and Ausanio, G. and di Uccio, U. S. and Vaglio, R. (literal)
Pagina inizio
  • 18 (literal)
Pagina fine
  • 19 (literal)
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  • International Conference on Materials and Mechanisms of Superconductivity. High Temperature Superconductors VII -- M2SRIO, 25.30 Maggio 2003, RIO DE JANEIRO, BRAZIL Contributo Orale (literal)
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  • http://dx.doi.org/10.1016/j.physc.2004.02.018, (literal)
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  • Proceedings of the International Conference on Materials and Mechanisms of Superconductivity. High Temperature Superconductors VII -- M2SRIO (literal)
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  • 408 (literal)
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  • 408-410 (literal)
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  • 2 (literal)
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  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
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  • M. Salluzzo a, C. Aruta b, G. Ausanio a, U. Scotti di Uccio c, R. Vaglio a a INFM-COHERENTIA and Dipartimento di Scienze Fisiche, Universit!a di Napoli ''Federico II'', Piazzale Tecchio 80, I-80125 Napoli, Italy b INFM-COHERENTIA, Universit!a di Roma ''TorVergata'', Dipartimento di Ingegneria Meccanica, Via del Politecnico 1, I-00133 Roma, Italy c Universit!a degli Studi di Cassino, via Marconi 10, I-03043 Cassino, Italy (literal)
Titolo
  • The role of strain in the superconductivity of Nd-doped YBCO films deposited by diode high pressure oxygen sputtering (literal)
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  • Edited by W.Ortiz, E. Mello, E. Granato and Elisa Baggio Saitovitch (literal)
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  • ELSEVIER (literal)
Abstract
  • Superconductivity of Y1Ba2Cu3O7-d c-axis epitaxial films is always depressed when the films thickness is reduced to few unit cells. Here we report a detailed study of the structure, morphology and transport properties of Y(Nd0.05Ba1.95)Cu3O7-d films deposited by high pressure diode oxygen sputtering. Films having thickness between 9 and 250 unit cells deposited on LaAlO3 substrates have been investigated. It is shown that both T-c and J(c) are reduced by decreasing the film thickness. The effect is quite evident even in relatively thick Y(Nd0.05Ba1.95)Cu3O7-d films made of 32 unit cells. Moreover it is shown that the a and b axes of the films approach one to each other with decreasing thickness. A nine unit cell film is almost tetragonal. Application of a simple elasticity theory to account for the structural changes fails to explain the experimental results. Inelastic strain induced by an oxygen disordering in the Cu(1)-O chains may explain the experimental results. (C) 2004 Elsevier B.V. All rights reserved. (literal)
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