Study of the microwave electrodynamic response of MgB2 thin films (Articolo in rivista)

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Label
  • Study of the microwave electrodynamic response of MgB2 thin films (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/s0921-4534(02)00994-2 (literal)
Alternative label
  • Andreone, A. and Cassinese, A. and Cantoni, C. and Di Gennaro, E. and Lamura, G. and Maglione, M. G. and Paranthaman, M. and Salluzzo, M. and Vaglio, R. (2002)
    Study of the microwave electrodynamic response of MgB2 thin films
    in Physica. C, Superconductivity (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Andreone, A. and Cassinese, A. and Cantoni, C. and Di Gennaro, E. and Lamura, G. and Maglione, M. G. and Paranthaman, M. and Salluzzo, M. and Vaglio, R. (literal)
Pagina inizio
  • 1287 (literal)
Pagina fine
  • 1290 (literal)
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  • 372 (literal)
Rivista
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  • 4 (literal)
Note
  • Google Scholar (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Andreone, A. and Cassinese, A. and Di Gennaro, E. and Lamura, G. and Maglione, M. G. INFM and Dipartimento di Scienze Fisiche, Universit!a degli Studi di Napoli Federico II, Facolt!a di Ingegneria, Piazzale Tecchio 80, I-80125 Napoli, Italy Cantoni, C. and Paranthaman, M. b Oak Ridge National Laboratory, Oak Ridge, TN, USA (literal)
Titolo
  • Study of the microwave electrodynamic response of MgB2 thin films (literal)
Abstract
  • We present a study on the power dependence of the microwave surface impedance in thin films of the novel superconductor MgB2. 500 nm thick samples exhibiting critical temperatures ranging between 26 and 38 K are synthesized by an ex situ post-anneal of e-beam evaporated boron in the presence of an Mg vapor at 900 degreesC. Preliminary results on films grown in situ by a high rate magnetron sputtering technique from stoichiometric MgB2 and Mg targets are also reported. Microwave measurements have been carried out employing a dielectrically loaded niobium superconducting cavity operating at 19.8 GHz and 4 K. The study shows that the electrodynamic response of MgB2 films is presently dominated by extrinsic sources of dissipation, appearing already at low microwave power. likely to be ascribed to the presence of grain boundaries and normal inclusions in the samples. (C) 2002 Elsevier Science B.V. All rights reserved. (literal)
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