Critical current density and AC magnetic susceptibility of high-quality FeTe0.5Se0.5 superconducting tapes
Iron telluride-selenium superconducting materials, known for their non-toxicity, ease of preparation, simple structure, and high upper critical fields, have attracted much research interest in practical application. In this work, we conducted electrical transport measurements, magneto-optical imaging, and AC magnetic susceptibility measurements on FeTe 0.5 Se 0.5 superconducting long tapes fabricated via reel-to-reel pulsed laser deposition. Our transport measurements revealed a high critical current density that remains relatively stable even with increasing external magnetic fields, reaching over 1 × 10 5 A/cm 2 at 8 K and 9 T. The calculated pinning force density indicates that normal point pinning is the primary mechanism in these tapes. The magneto-optical images demonstrated that the tapes show homogeneous superconductivity and uniform distribution of critical current density. The AC magnetic susceptibility measurements also confirmed their strong flux pinning nature of withstanding high magnetic field. Based on these characteristics, FeTe 0.5 Se 0.5 superconducting tapes show promising prospects for applications under high magnetic field.
Authors
- Linfei Liu (ORCID: https://orcid.org/0000-0002-7313-1779)
- Jun‐Yi Ge (ORCID: https://orcid.org/0000-0001-5206-2930)
- Zhixiang Shi (ORCID: https://orcid.org/0000-0003-3881-5152)
- Xiangzhuo Xing (ORCID: https://orcid.org/0000-0002-2147-8949)
- T. Tamegai (ORCID: https://orcid.org/0000-0002-1386-5762)
- Huajun Liu (ORCID: https://orcid.org/0000-0003-1147-6840)
- Wei Wei (ORCID: https://orcid.org/0000-0003-1893-1105)
- Wenjie Li (ORCID: https://orcid.org/0000-0003-1687-4186)
- Wenhui Liu (ORCID: https://orcid.org/0009-0000-7584-111X)
- Li Ren (ORCID: https://orcid.org/0000-0003-0604-9166)
- Yanpeng Qi (ORCID: https://orcid.org/0000-0003-2722-1375)
- Xin Zhou
- Qiang Hou
- Yue Sun (ORCID: https://orcid.org/0000-0003-4828-2361)
- Ke Wang (ORCID: https://orcid.org/0000-0002-1763-6385)
Institutions
- Shanghai University (CN)
- Shanghai Jiao Tong University (CN)
- Chinese Academy of Sciences (CN)
- Qufu Normal University (CN)
- ShanghaiTech University (CN)
- Institute of Plasma Physics (CN)
- Huazhong University of Science and Technology (CN)
- The University of Tokyo (JP)
- Southeast University (CN)
Publication Details
- Journal
- Superconductivity
- Published
- 2024-10-12
- DOI
- https://doi.org/10.1016/j.supcon.2024.100127
- Citations
- 3
- Primary Topic
- Iron-based superconductors research
- Type
- article
- Field-Weighted Citation Impact
- 0.35
Funders
- Key Technologies Research and Development Program
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities