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Enhancement of the critical current density in Cu/Ag composite sheathed (Ba, K)Fe2As2 tapes by pre-annealing process
| Content Provider | Scilit |
|---|---|
| Author | Li, Liu Zhang, Xianping Yao, Chao Liu, Shifa Huang, He Dong, Chiheng Cheng, Zhe Awaji, Satoshi Ma, Yanwei |
| Copyright Year | 2019 |
| Description | Journal: Materials Research Express Iron-based superconductors, a promising candidate for high-field applications, have aroused rising attentions. In the present study, a pre-annealing method was used to promote the transport critical current density $(J_{c}$) in Cu/Ag composite sheathed $(Ba,K)Fe_{2}As_{2}$ tapes. It was found that tapes sintered at 740$ ^{o}$C for 3 h under ambient pressure showed a $J_{c}$ up to $4.9×10^{4}$ $A/cm^{2}$ (4.2 K, 10 T). Also, a transport $J_{c}$ of $6.5×10^{4}$ $A/cm^{2}$ (4.2 K, 10 T) was achieved using a hot-press technique. The factors affecting the $J_{c}$ of tapes were systematically analyzed. The well-constructed crystallization and grain connectivity obtained in pre-annealed tapes were considered the major causes of the high $J_{c}$. These results highlight the great potential to increase the $J_{c}$ in multiple metal composite sheathed Ba-122 tapes. |
| Related Links | https://iopscience.iop.org/article/10.1088/2053-1591/ab2cf8/pdf |
| ISSN | 20531591 |
| e-ISSN | 20531591 |
| DOI | 10.1088/2053-1591/ab2cf8 |
| Journal | Materials Research Express |
| Issue Number | 9 |
| Volume Number | 6 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2019-06-26 |
| Access Restriction | Open |
| Subject Keyword | Journal: Materials Research Express Pre Annealed Tapes Composite Sheathed |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics |
