The enhancement of superconducting YBa2Cu30 7-x thin films by electric field application during deposition

Graham Lyall Hardie, Ulrich Buttner, Willem Jacobus Perold

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The effect of applying a high electric field in-situ during the deposition and growth of YBa2Cu307-x (YBCO) thin films is investigated. The YBCO films are deposited from a stoichiometric YBCO target by pulsed laser deposition (PLD) on (100) MgO single crystal substrates at 726 ° C, in an Oxygen atmosphere. The electric field is generated by applying an electric potential to a metal electrode placed in close proximity to the surface of the substrate. The substrate and deposition chamber are grounded. Proper insulation of the electrode is extremely important in order to avoid arc discharge in the deposition chamber. The quality of the YBCO thin films grown was enhanced by the application of the electric field. These thin films showed higher superconducting transition temperatures and narrower transition widths. This technique can therefore prove useful for producing high quality thin films needed for junctions and multilayer devices.

    Original languageEnglish (US)
    Article number5061483
    Pages (from-to)3387-3390
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume19
    Issue number3
    DOIs
    StatePublished - Jun 1 2009

    Keywords

    • Electric field
    • Pulsed laser deposition
    • Thin-film
    • YBCO

    ASJC Scopus subject areas

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

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