Published November 5, 1990
| Version v1
Journal article
Effect of small changes in composition on the electrical and structural properties of YBa2Cu3O7 thin films
Creators
- 1. Royal Signals and Radar Establishment, Malvern, Worcestershire (United Kingdom)
Description
Epitaxial thin films of YBa2Cu3O7 have been grown in situ by evaporation onto (001) MgO substrates. The composition was varied systematically to investigate the effects of changes in Cu content and Ba/Y ratio on the film properties. The results demonstrate that deviations from stoichiometry at the limit of resolution of most analytic techniques can have a large effect on structural and transport properties, as well as causing marked changes in surface morphology. The best properties (Jc>3x106 A/cm2 at 77 K) are only found for a narrow range of compositions, which can be readily identified from the surface morphology
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 57
- Journal Issue
- 19
- Series
- Appl. Phys. Lett.
- Journal Page Range
- 2016-2018
- ISSN
- 0003-6951
- CODEN
- APPLA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22042575
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM OXIDES; CARRIER MOBILITY; CHEMICAL COMPOSITION; COPPER OXIDES; CORRELATIONS; CRITICAL CURRENT; HIGH-TC SUPERCONDUCTORS; SUPERCONDUCTING FILMS; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; VACUUM EVAPORATION; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; EVAPORATION; FILMS; MOBILITY; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS