Bulletin of Materials Science

, Volume 17, Issue 7, pp 1287-1297

First online:

Growth and applications of superconducting and nonsuperconducting oxide epitaxial films

  • M S HegdeAffiliated withSolid State and Structural Chemistry Unit, Indian Institute of Science

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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 giveT c=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.


Epitaxial thin films metallic oxides high-T c films SNS junction LaNiO3 La1−x Pb x MnO3 ferroelectric oxides ferromagnetic oxides