YBaCuO and TlBaCaCuO superconductor thin films via an electrodeposition process
- National Renewable Energy Lab., Golden, CO (US)
- Los Alamos National Lab., Los Alamos, NM (US)
This paper reports on thin-film superconductors of YBaCuO (YBCO) and TlBaCaCuO (TBCCO) that were fabricated via an electrodeposition process. The YBCO superconductor precursor thin film were deposited at potentials ranging from {minus}2.5 to {minus}4 V vs. an Ag/AgNO{sub 3} reference electrode. The YBCO films were deposited under both constant and pulsed-potential conditions. The post-annealed YBCO films showed zero resistance of approximately 74 K on Ni, 78 K on MgO, and 91 K on ZrO{sub 2} substrates. The best critical current densities obtained for the YBCO films at 4 K and zero magnetic field and their respective substrates are as follows: 4000 A/cm{sup 2} on (100) ArO{sub 2}, 3960 A/cm{sup 2} on (100) MgO (constant potential), 5160 A/cm{sup 2} ON (100) MgO (pulsed potential), 500 A/cm{sup 2} on a Ni wire, and 500 A/cm{sup 2} on a Ag wire. The precursors of the superconducting TBCCO films were codeposited at a constant potential of {minus}4V and also under pulsed-potential conditions. The post-annealed TBCCO films showed zero resistance at about 102K on SrTiO{sub 3} substrate. The critical current density at 76 K of a TBCCO film deposited at constant potential on a silver-coated SrTiO{sub 3} substrate was 20.000 A/cm{sup 2} in zero magnetic field and 5,000 A/cm{sup 2} in a 10 kOe field parallel to the film plane. The critical current density of pulsed-potential deposited TBCCO film on SrTiO{sub 3} was 56,000 A/cm{sup 2} at 76 K in zero field.
- OSTI ID:
- 5362202
- Journal Information:
- Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 139:1; ISSN JESOA; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
CRITICAL CURRENT
CUPRATES
CURRENT DENSITY
CURRENTS
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTRODEPOSITION
ELECTROLYSIS
FABRICATION
FILMS
LYSIS
MAGNETIC FIELDS
MANGANESE COMPOUNDS
MANGANESE OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REDOX POTENTIAL
SUBSTRATES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SURFACE COATING
THALLIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES