Processing of Bi (Pb) Sr Ca Cu oxide superconductor thin films by metal alkoxide route
| Autor: | T. Yogo, H. Tomonaga, M. Ishii, S. Hirano, K. Kikuta |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Superconductivity
Materials science Analytical chemistry Oxide Energy Engineering and Power Technology Condensed Matter Physics Dip-coating Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry law Phase (matter) Calcination Irradiation Electrical and Electronic Engineering Thin film Single crystal |
| Zdroj: | Physica C: Superconductivity. 190:53-56 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/s0921-4534(05)80195-9 |
| Popis: | High- T c superconducting thin films in the Bi Pb Sr Ca Cu O system were prepared through reaction controls in organic solution by a metal-organic route. Thin films with preferred orientation were successfully prepared on MgO (100) single crystal substrates by a dip coating method. The films of the (243) phase (high- T c phase) and the (232) phase (low- T c phase) were synthesized from solutions with composition of Bi:Pb:Sr:Ca:Cu = 2:0.35:2:2:3 and Bi:Sr:Ca:Cu = 2:2:1:2, respectively. The J c of films was much improved through the UV irradiation during calcination as well as the proper selection of composition for starting solutions. A film prepared from a solution composition of Bi:Pb:Sr:Ca:Cu = 2:0.35:2:2:3 with UV irradiation showed the sharp onset of T c at 117 K, zero resistance at 79.5 K and J c of 840 A/cm 2 (77.3 K) after heat treatment at 845°C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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