Ag doped (Bi1.6Pb0.4)Sr2CaCu2O8+δ textured rods
[EN] In this work, superconducting samples of (Bi1.6Pb0.4)Sr2CaCu2O8+δ with Ag additions have been studied. (Bi1.6Pb0.4)Sr2CaCu2O8+δ + x wt.% Ag (with x = 0, 1 and 3) powders were synthesized using a sol-gel method. The obtained powders were used as precursors to fabricate long textured cylindrical...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2008 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/6444 |
| Acceso en línea: | http://hdl.handle.net/10261/6444 |
| Access Level: | acceso abierto |
| Palabra clave: | Superconductors Electrical properties Mechanical properties Bi-2212 Melting zone Superconductores Propiedades eléctricas Propiedades mecánicas Fusión zonal |
| Sumario: | [EN] In this work, superconducting samples of (Bi1.6Pb0.4)Sr2CaCu2O8+δ with Ag additions have been studied. (Bi1.6Pb0.4)Sr2CaCu2O8+δ + x wt.% Ag (with x = 0, 1 and 3) powders were synthesized using a sol-gel method. The obtained powders were used as precursors to fabricate long textured cylindrical bars through a floating zone melting method. A drastic change on the microstructure has been found when comparing with undoped Bi2Sr2CaCu2O8+δ samples. The results showed that electrical resistivity at room temperature, critical current as well as flexural strength are improved when Ag is added to these Pb doped samples, while critical temperature does not change. On the other hand, it has been found that samples with composition (Bi1.6Pb0.4)Sr2CaCu2O8+δ + Ag shown E-I curves with very high sharpness values on the zone of the superconducting to normal transition, reaching n-values (E∼In) as high as 45 at 65K. |
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