I-V characteristics and the electric-field effect in melt-grown YBa{sub 2}Cu{sub 3}O{sub x}/Y{sub 2}BaCuO{sub 5} HTSC crystals.

Journal Article · Sat Jan 01 04:00:00 EST 2000 · Phys. Solid State

DOI:https://doi.org/10.1134/1.1131363· OSTI ID:943024

Smirnov, B I; Orlova, T S; Sengupta, S; Goretta, K C

The effect of an electric field E=120 MV/m in the electrode-insulator-superconductor system on I-V curves obtained at 77 K on two types of single-crystal samples cut from monolithic superconducting YBa{sub 2}Cu{sub 3}O{sub x}/Y{sub 2}BaCuO{sub 5} has been studied. The Y211 nonsuperconducting phase in the ingot was in the form of precipitates {approx}1 {mu}m in size. It has been found that an electric field applied to samples with a comparatively low Y211 content (volume fraction 8%) does not affect the critical current I{sub c} while reducing the resistance R at currents slightly above I{sub c}c . In samples containing more than 35% Y211 phase, electric field results in an increase of I{sub c} and a decrease of R for I>I{sub c} . Data on the critical temperature T{sub c} and the temperature dependence of I{sub c} have also been obtained.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: EE; FOR
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 943024
• Report Number(s): ANL/ET/JA-36812
• Journal Information: Phys. Solid State, Journal Name: Phys. Solid State Journal Issue: 7 ; 2000 Vol. 42; ISSN 1063-7834
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
HIGH-TC SUPERCONDUCTORS
MONOCRYSTALS
TRANSITION TEMPERATURE
YTTRIUM OXIDES