Influences of oxygen content on the carrier concentration and transport properties of Bi-2212 bulks
文献类型：会议论文
| 作者 | Zhang, Shengnan; Li, Chengshan; Hao, Qinbin; Zhang, Pingxiang; Liu, Haiming; Yang, Shenghui |
| 出版日期 | 2012 |
| 会议日期 | OCT 24-26, 2011 |
| 关键词 | THERMOELECTRIC-POWER SUPERCONDUCTORS CERAMICS MAGNET CABLE WIRES |
| 卷号 | 27 |
| DOI | 10.1016/j.phpro.2012.03.439 |
| 英文摘要 | Bi2.1Sr1.96Ca0.95Cu2.0O8 (Bi-2212) bulks have been obtained with Spark Plasma Sintering (SPS) method, with the precursor powders synthesized by co-precipitation process. Due to the vacuum environment involved in SPS, oxygen loss can be expected during sintering. Therefore, extra annealing processes under oxygen atmosphere were performed to enhance the superconducting properties of the bulks. Seebeck coefficient has been measured after different annealing process, in order to calculate the carrier concentration change with annealing process. The carrier concentration underwent a change from 0.178 to 0.198 per Cu ions after the 34 h annealing in oxygen at 773 K. The magnetic field dependence of critical current density, Jc, has been measured at 20 K on the samples with different annealing time. The critical current density increase from 550 to 5100 Acm(-2) at zero field after the 34 h annealing, and the optimized Jc value can be obtained at the 34 h annealing sample over the entire magnetic field range. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of ISS Program Committee |
| 会议录出版者 | Physics Procedia |
| 学科主题 | Physics |
| ISSN号 | 1875-3892 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23642]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Zhang, Shengnan,Li, Chengshan,Hao, Qinbin,et al. Influences of oxygen content on the carrier concentration and transport properties of Bi-2212 bulks[C]. 见:. OCT 24-26, 2011. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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