La{sub 0.7}Sr{sub 0.3}MnO{sub 3}: A single, conductive-oxide buffer layer for the development of YBa{sub 2}Cu{sub 3}O

Journal Article · Mon Oct 01 04:00:00 EDT 2001 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1405424· OSTI ID:40277746

Aytug, T; Paranthaman, M; Kang, B W; Sathyamurthy, S; Goyal, A; Christen, D K

Coated conductor applications in power technologies require stabilization of the high-temperature superconducting (HTS) layers against thermal runaway. Conductive La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO) has been epitaxially grown on biaxially textured Ni substrates as a single buffer layer. The subsequent epitaxial growth of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) coatings by pulsed laser deposition yielded self-field critical current densities (J{sub c}) of 0.5 x 10{sup 6} A/cm{sup 2} at 77 K, and provided good electrical connectivity over the entire structure (HTS+conductive-buffer+metal substrate). Property characterizations of YBCO/LSMO/Ni architecture revealed excellent crystallographic and morphological properties. These results have demonstrated that LSMO, used as a single, conductive buffer layer, may offer potential for use in fully stabilized YBCO coated conductors.

• Research Organization: Oak Ridge National Laboratory
• Sponsoring Organization: (US)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 40277746
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 14 Vol. 79; ISSN 0003-6951
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARCHITECTURE
BUFFERS
COATINGS
CRITICAL CURRENT
DEPOSITION
LASERS
STABILIZATION
SUBSTRATES