9th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials | |
Melting of SmBa2Cu3O7-y-seeds during preparation of YBCO Bulk Superconductors by Infiltration Growth Method | |
物理学;材料科学 | |
Vojtkova, L.^1 ; Diko, P.^1 ; Volochová, D.^1 | |
Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, Koice | |
04001, Slovakia^1 | |
关键词: Infiltration growth; Low concentrations; Seeded infiltration; Single grain growth; YBCO bulk superconductor; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/695/1/012011/pdf DOI : 10.1088/1742-6596/695/1/012011 |
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学科分类:材料科学(综合) | |
来源: IOP | |
【 摘 要 】
The conditions for single-grain growth of YBCO bulk superconductors by top seeded infiltration growth were tested. It is shown that the interaction of melt formed from BaCuO2+ CuO + Y2O3precursor with the Sm123 seed causes dissolution of the seed at maximum melting temperature 1045 °C. Experiments with low weight Y211 pellet confirmed that the low concentration of Y in the infiltration melt is responsible for this effect. The most effective way suppressing the seed dissolution was shown to be the insertion of Y123 + Y211 buffer layer between the seed and the Y211 pellet. This buffer layer possesses the melt which is saturated with yttrium what prevents dissolution of the seed.
【 预 览 】
Files | Size | Format | View |
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Melting of SmBa2Cu3O7-y-seeds during preparation of YBCO Bulk Superconductors by Infiltration Growth Method | 1516KB | download |