FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS
Tl-Ba-Ca-Cu-O (TBCCO) superconducting films have been prepared via the incorporation of Tl vapour into co-electrodeposited and sequentially electrodeposited Ba-Ca-Cu-O (BCCO) precursors on ceramic substrates and silver foils. The BCCO films were electrodeposited at a constant potential of -3 to -5 V...
| Główni autorzy: | , , |
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| Format: | Journal article |
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1994
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| _version_ | 1826302095476654080 |
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| author | Su, L Grovenor, C Goringe, M |
| author_facet | Su, L Grovenor, C Goringe, M |
| author_sort | Su, L |
| collection | OXFORD |
| description | Tl-Ba-Ca-Cu-O (TBCCO) superconducting films have been prepared via the incorporation of Tl vapour into co-electrodeposited and sequentially electrodeposited Ba-Ca-Cu-O (BCCO) precursors on ceramic substrates and silver foils. The BCCO films were electrodeposited at a constant potential of -3 to -5 V (versus Hg/Hg2SO4, [SO4 2-] = 1 M) from a single electrolyte or multiple electrolytes. The results suggest that the BCCO precursors deposited by the novel hybrid sequential electrodeposition provide a better stoichiometry control than those deposited by co-electrodeposition due to the great difference (>0.2 V) in standard reduction potentials among the cation species (Ba2+/-2.906 V, Ca2+/-2.866 V, Cu2+/0.337 V versus SHE). Superconducting films with reliable properties have been prepared on polycrystalline zirconia plates and rods. These films contain multiple superconducting phases with a plate-like morphology and have transition temperatures in the range 95-105 K. The best film on MgO 〈100〉 has a thickness of <5 μm and shows a Tc (R = 0) at 111 K and Jc>2×103 A cm-2 at 77 K. The best film on silver foil shows a promising Jc>103 A cm-2 at 77 K. |
| first_indexed | 2024-03-07T05:42:19Z |
| format | Journal article |
| id | oxford-uuid:e5ffa2e1-d024-4eb4-9dcb-4f1a04eca178 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:42:19Z |
| publishDate | 1994 |
| record_format | dspace |
| spelling | oxford-uuid:e5ffa2e1-d024-4eb4-9dcb-4f1a04eca1782022-03-27T10:28:04ZFABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e5ffa2e1-d024-4eb4-9dcb-4f1a04eca178Symplectic Elements at Oxford1994Su, LGrovenor, CGoringe, MTl-Ba-Ca-Cu-O (TBCCO) superconducting films have been prepared via the incorporation of Tl vapour into co-electrodeposited and sequentially electrodeposited Ba-Ca-Cu-O (BCCO) precursors on ceramic substrates and silver foils. The BCCO films were electrodeposited at a constant potential of -3 to -5 V (versus Hg/Hg2SO4, [SO4 2-] = 1 M) from a single electrolyte or multiple electrolytes. The results suggest that the BCCO precursors deposited by the novel hybrid sequential electrodeposition provide a better stoichiometry control than those deposited by co-electrodeposition due to the great difference (>0.2 V) in standard reduction potentials among the cation species (Ba2+/-2.906 V, Ca2+/-2.866 V, Cu2+/0.337 V versus SHE). Superconducting films with reliable properties have been prepared on polycrystalline zirconia plates and rods. These films contain multiple superconducting phases with a plate-like morphology and have transition temperatures in the range 95-105 K. The best film on MgO 〈100〉 has a thickness of <5 μm and shows a Tc (R = 0) at 111 K and Jc>2×103 A cm-2 at 77 K. The best film on silver foil shows a promising Jc>103 A cm-2 at 77 K. |
| spellingShingle | Su, L Grovenor, C Goringe, M FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS |
| title | FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS |
| title_full | FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS |
| title_fullStr | FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS |
| title_full_unstemmed | FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS |
| title_short | FABRICATION OF TBCCO FILMS VIA SEQUENTIAL ELECTRODEPOSITION AND CO-ELECTRODEPOSITION OF THALLIUM-FREE PRECURSORS |
| title_sort | fabrication of tbcco films via sequential electrodeposition and co electrodeposition of thallium free precursors |
| work_keys_str_mv | AT sul fabricationoftbccofilmsviasequentialelectrodepositionandcoelectrodepositionofthalliumfreeprecursors AT grovenorc fabricationoftbccofilmsviasequentialelectrodepositionandcoelectrodepositionofthalliumfreeprecursors AT goringem fabricationoftbccofilmsviasequentialelectrodepositionandcoelectrodepositionofthalliumfreeprecursors |