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Growth and applications of superconducting and nonsuperconducting oxide epitaxial films

Hegde, MS (1994) Growth and applications of superconducting and nonsuperconducting oxide epitaxial films. In: 5th Annual General Meeting of the Materials-Research-Society-of-India, FEB 07-09, 1994, MAT RES SOC INDIA .

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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 give T-c = 90 K, critical current > 10(6) A/cm(2) at 77 K and surface resistance = 450 mu Omega. 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.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Indian academy of sciences.
Keywords: Epitaxial thin films; metallic oxides; high-To films; SNS junction; LaNiO3;La ~ _ x Pbx MnO3: ferroelectric oxides; ferromagnetic oxides
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 01 Apr 2011 05:47
Last Modified: 01 Apr 2011 05:47
URI: http://eprints.iisc.ernet.in/id/eprint/36515

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