Effect of pb doping on the electrical properties of textured Bi-2212 superconductors
Bi2-xPbxSr2CaCu2Oy textured materials (x=0.0, 0.2, 0.4, and 0.6) have been successfully prepared by the laser floating zone technique. Microstructure and electrical properties (JC and TC) have been clearly affected by Pb addition. From the E-I curves, slope of the transition between the superconduct...
| Authors: | , , , , , , |
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| Format: | article |
| Status: | Versión enviada para evaluación y publicación |
| Publication Date: | 2014 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/118056 |
| Online Access: | http://hdl.handle.net/10261/118056 |
| Access Level: | Open access |
| Keyword: | Bi-2212 Doping Platelets Electrical properties Grain growth |
| Summary: | Bi2-xPbxSr2CaCu2Oy textured materials (x=0.0, 0.2, 0.4, and 0.6) have been successfully prepared by the laser floating zone technique. Microstructure and electrical properties (JC and TC) have been clearly affected by Pb addition. From the E-I curves, slope of the transition between the superconducting and the normal state (n) at 77K reaches a maximum of about 16 for the 0.4 Pb doped samples. This value is much higher than the typical ones for the Bi-2212 materials. Moreover, when the electrical properties of the 0.4 Pb doped samples are measured at lower temperatures (between 65 and 77K), n values increase when the temperature is decreased. A maximum n value of 32 has been reached at 65K which makes this material very attractive for its use as resistive fault current limiters. © 2014 Elsevier Ltd. |
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