Superconductivity of MgB2 sputtered thin films with aluminium nitride buffer layers

G. Ilonca, T. R. Yang, A. V. Pop, V. Toma, P. Balint, M. Bodea, D. Marconi, T. Jurcut

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

MgB2 thin films were deposited, at low temperature substrates, in situ, on a polished c-cut sapphire substrates, with the aluminium nitride (AlN) buffer layers, using the multiple-target sputtering system. The magnetoresistivities were measured using dc-4 terminal method in applied magnetic field up to 9 Tesla. The upper critical field anisotropy, Hc2(T) and irreversibility field Hirr(T) versus temperature were determinated. The Hall density of charge are slightly temperature dependence and positive in normal state. The critical temperature of 30-32 K and critical current density of 106-107 A/cm2 at 4, 2 K were obtained. Using extracted data, the coherence length ξ0, anisotropic coefficient γ and penetration depth λL were calculated.

原文英語
頁(從 - 到)557-559
頁數3
期刊Physica C: Superconductivity and its applications
460-462 I
發行號SPEC. ISS.
DOIs
出版狀態已發佈 - 2007 九月 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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