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

Graham Lyall Hardie; Ulrich Buttner; Willem Jacobus Perold

doi:10.1109/TASC.2009.2018523

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 journal › Article › peer-review

Abstract

The effect of applying a high electric field in-situ during the deposition and growth of YBa₂Cu₃0_7-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 language	English (US)
Article number	5061483
Pages (from-to)	3387-3390
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	19
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2009.2018523
State	Published - 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

Access to Document

10.1109/TASC.2009.2018523

Cite this

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

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.",

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