YBA2CU3O7-DELTA FILMS WITH HIGH CRITICAL-CURRENT DENSITY ON EPITAXIAL-FILMS OF BA2LANBO6, A NEW PEROVSKITE SUBSTRATE FOR YBA2CUO7-DELTA SUPERCONDUCTOR

Authors
PAI SP JASUDASAN J APTE PR PINTO R KURIAN J SAJITH PK JAMES J KOSHY J
Citation
Sp. Pai et al., YBA2CU3O7-DELTA FILMS WITH HIGH CRITICAL-CURRENT DENSITY ON EPITAXIAL-FILMS OF BA2LANBO6, A NEW PEROVSKITE SUBSTRATE FOR YBA2CUO7-DELTA SUPERCONDUCTOR, Europhysics letters, 39(6), 1997, pp. 669-673
Citations number
16
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
39
Issue
6
Year of publication
1997
Pages
669 - 673
Database
ISI
SICI code
0295-5075(1997)39:6<669:YFWHCD>2.0.ZU;2-#
Abstract
Ba(2)LaMbO(6), a new perovskite substrate material for YBa2Cu3O7-delta , has been grown epitaxially on (100) MgO by pulsed-laser ablation met hod. A superconducting YBa2Cu3O7-delta film in situ grown on an epitax ial Ba2LaNbO6 film gave a T-C(0) = 90 K with a transition width Delta T = 0.5 K. The YBa2Cu3O7-delta films exhibited (00l) orientation of an orthorhombic YBa2Cu3O7-delta phase and showed almost perfect metallic behaviour in the normal state with resistance ratio (R-300K/R-100K) = 2.98. critical current density of 5 x 10(6) A/cm(2) at 77 K was obtai ned consistently for the YBa2Cu3O7-delta films in situ grown on epitax ial Ba2LaNbO6 films.