Conducting La0.7Sr0.3MnO3 -superconducting YBa2Cu3O7 epitaxial bilayers grown by chemical solution deposition

We report on the preparation and characterization of a bilayer system on (001) SrTiO3 substrates consisting of a YBa2Cu3O7 (YBCO) superconducting layer grown on a conducting La0.7Sr0.3MnO3 (LSMO) buffer layer. Films were prepared by all chemical solution deposition process using propionates precurso...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2007-09, Vol.460-462 (2), p.1357-1358
Main Authors: HASSINI, A, POMAR, A, MORENO, C, RUYTER, A, ROMA, N, PUIG, T, OBRADORS, X
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Critical currents
Exact sciences and technology
Magnetic properties and materials
Magnetotransport phenomena, materials for magnetotransport
Manganites
Multilayers, superlattices , heterostructures
Physics
Properties of type I and type II superconductors
Superconducting films and low-dimensional structures
Superconductivity
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Summary:We report on the preparation and characterization of a bilayer system on (001) SrTiO3 substrates consisting of a YBa2Cu3O7 (YBCO) superconducting layer grown on a conducting La0.7Sr0.3MnO3 (LSMO) buffer layer. Films were prepared by all chemical solution deposition process using propionates precursors for LSMO and trifluoroacetates for YBCO. Highly epitaxial LSMO layers of 30nm with atomic flat surfaces have been obtained at 1000 deg C with magnetic and electrical properties similar to the bulk ones. The YBCO growth conditions for epitaxial layers of 300nm were optimized giving rise to high performance bilayers structures with critical current densities, JC, about 2MA/cm2 at 77K.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2007.04.188