Relationship between growth speed, microstructure, mechanical and electrical properties in Bi-2212/Ag textured composites
| Autor: | Andres Sotelo, M. Eyyüphan Yakıncı, Berdan Özkurt, M. A. Madre, Bekir Özçelik |
|---|---|
| Přispěvatelé: | Çukurova Üniversitesi |
| Rok vydání: | 2012 |
| Předmět: |
Superconductivity
Materials science Annealing (metallurgy) Mechanical properties Ag Condensed Matter Physics Microstructure Laser Electronic Optical and Magnetic Materials law.invention Grain growth Metal law visual_art Bi-2212 visual_art.visual_art_medium Electrical properties Composite material Grain orientation Growth speed |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 2008-0042 |
| Popis: | Trabajo presentado como comunicación oral al: "5th National Superconductivity Symposium" celebrado en Izmir(Turquía) del 3 al 6 de julio de 2011.-- et al.-- El pdf del artículo es la versión pre-print. Transport properties on Bi-2212 superconductors can be improved by grain orientation methods while mechanical ones can be tuned up by the addition of metallic silver. Both processes can be performed simultaneously using the Laser Floating Zone (LFZ) method. In this work, Bi 2Sr 2CaCu 2O x/3 wt.%Ag textured composite materials were prepared by a LFZ melting technique at different growth speeds (5, 15, 30, and 60 mm/h). In all cases, the observed microstructure after annealing shows the Bi-2212 phase as the major one. Although growth speed has no effect on the measured T c values, a drastic change on the J c values has been found. The best results, both mechanical and transport properties, have been obtained for samples grown at 15 mm/h. © 2012 Springer Science+Business Media, LLC. Berdan Özkurt and Bekir Özçelik acknowledge financial support from the Council of Higher Education (YÖK) in Turkey for international mobility. M.A. Madre and A. Sotelo acknowledge financial support from the Spanish MICINN-FEDER (Projects MAT2008-00429 and MAT2008-05983) and the Gobierno de Aragón (Consolidated Research Group T12). |
| Databáze: | OpenAIRE |
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