• Growth and applications of superconducting and nonsuperconducting oxide epitaxial films

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    • Keywords

       

      Epitaxial thin films; metallic oxides; high-Tc films; SNS junction; LaNiO3; La1−xPbxMnO3; ferroelectric oxides; ferromagnetic oxides

    • Abstract

       

      Growth and characterization of high-temperature-superconducting YBa2Cu3O7 and several metallic-oxide thin films by pulsed laser deposition is described here. An overview of substrates employed for epitaxial growth of perovskite-related oxides is presented. Ag-doped YBa2Cu3O7 films grown on bare sapphire are shown to giveTc=90 K, critical current >106 A/cm2 at 77 K and surface resistance =450µΩ. Application of epitaxial metallic LaNiO3 thin films as an electrode for ferroelectric oxide and as a normal metal layer barrier in the superconductor-normal metal-superconductor (SNS) Josephson junction is presented. Observation of giant magnetoresistance (GMR) in the metallic La0·6Pb0·4MnO3 thin films up to 50% is highlighted.

    • Author Affiliations

       

      M S Hegde1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Bulletin of Materials Science | News

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      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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