Muhammad Hafiz, Mazwir and Balasan, Bryan Andrew and Farah Hanani, Zulkifli and Roslan, Abd-Shukor (2020) Effect of Co0.5Ni0.5Fe2O4 nanoparticles addition in ag-sheathed Bi-2223 superconductor tapes prepared by co-precipitation method. Materials Science Forum, 981. pp. 59-65. ISSN 0255-5476. (Published)
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2.1 Effect of Co0.5Ni0.5Fe2O4 nanoparticles addition in ag-sheathed Bi-2223.docx.pdf Download (142kB) | Preview |
Abstract
Effect of complex magnetic oxide Co0.5Ni0.5Fe2O4 (CNFO) nanoparticles addition in (Bi1.6Pb0.4)Sr2Ca2Cu3O10 (Bi-2223) superconductor tapes was investigated. Ultrafine Bi-2223 powder precursor was prepared via co-precipitation method and was added with 0.01 – 0.05 wt.% Co0.5Ni0.5Fe2O4 nanoparticles during the final heating stage. The sample with 0.01 wt.% addition, Bi-2223(CNFO)0.01 was found to have the highest critical current density, Jc. This sample were then chosen to be fabricated into Ag-sheathed superconductor tapes using the powder-in-tube (PIT) method. The tapes were sintered for 50 and 100 h at 845 °C. The phase, microstructure and Jc of the samples were determined by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and four point probe, respectively. Jc of Ag-sheathed Bi-2223(CNFO)0.01 tapes sintered for 100 h was 19830 A/cm2 at 30 K and 3970 A/cm2 at 77 K compared to tapes without addition which showed a much lower Jc (6370 A/cm2 at 30 K). This study showed that CNFO nanoparticles could act as an effective flux pinning centers to enhance the critical current density in the Bi-2223 superconductor.
| Item Type: | Article |
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| Uncontrolled Keywords: | Critical current density; Flux pinning centers; High temperature superconductor; Nanoparticles |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Pn. Hazlinda Abd Rahman |
| Date Deposited: | 28 Apr 2021 01:19 |
| Last Modified: | 28 Apr 2021 02:06 |
| URI: | http://umpir.ump.edu.my/id/eprint/30464 |
| Download Statistic: | View Download Statistics |
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