Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes
Ag-sheathed Tl-1212 tapes with a nominal composition of (Tl1.2Cr0.15)Sr2CaCu2O7 were fabricated using the powder-in-tube (PIT) method. The tapes (approximately 3-4 cm long) were annealed in oxygen flow at 820 �C, 870 �C and 890 �C each for 30 minutes, 1 hour and 5 hours, respectively. The x-ray diff...
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2023
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| author | A-Hamid N. Abd-Shukor R. |
| author2 | 6604077116 |
| author_facet | 6604077116 A-Hamid N. Abd-Shukor R. |
| author_sort | A-Hamid N. |
| building | UNITEN Library |
| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Ag-sheathed Tl-1212 tapes with a nominal composition of (Tl1.2Cr0.15)Sr2CaCu2O7 were fabricated using the powder-in-tube (PIT) method. The tapes (approximately 3-4 cm long) were annealed in oxygen flow at 820 �C, 870 �C and 890 �C each for 30 minutes, 1 hour and 5 hours, respectively. The x-ray diffraction (XRD) patterns for samples annealed at 820 �C and 870 �C showed the Tl-1212 as the dominant phase with Tl-1201 as minor phase. Scanning electron micrographs (SEM) revealed that the tapes showed no discernible favourable texture. Using a self-field approximation together with Jc dependence on temperature the characteristic length (Lc) associated with the pinning force is estimated to be approximately the same as the average grains size (Rg) for the tapes annealed at 820 �C for 30 minutes. For tapes that were annealed at 870 �C and 890 �C, Lc>Rg. The initial rapid suppression of Jc at low fields (<0.1 T) can be attributed to the weak-links phenomena as observed in other polycrystalline high-Tc materials with random grain orientations. |
| format | Article |
| id | my.uniten.dspace-29900 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2023 |
| record_format | dspace |
| spelling | my.uniten.dspace-299002023-12-28T16:58:08Z Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes A-Hamid N. Abd-Shukor R. 6604077116 7004750914 Composition effects Critical current density (superconductivity) Superconducting tapes Thallium compounds Powder-in-tube (PIT) methods High temperature superconductors Ag-sheathed Tl-1212 tapes with a nominal composition of (Tl1.2Cr0.15)Sr2CaCu2O7 were fabricated using the powder-in-tube (PIT) method. The tapes (approximately 3-4 cm long) were annealed in oxygen flow at 820 �C, 870 �C and 890 �C each for 30 minutes, 1 hour and 5 hours, respectively. The x-ray diffraction (XRD) patterns for samples annealed at 820 �C and 870 �C showed the Tl-1212 as the dominant phase with Tl-1201 as minor phase. Scanning electron micrographs (SEM) revealed that the tapes showed no discernible favourable texture. Using a self-field approximation together with Jc dependence on temperature the characteristic length (Lc) associated with the pinning force is estimated to be approximately the same as the average grains size (Rg) for the tapes annealed at 820 �C for 30 minutes. For tapes that were annealed at 870 �C and 890 �C, Lc>Rg. The initial rapid suppression of Jc at low fields (<0.1 T) can be attributed to the weak-links phenomena as observed in other polycrystalline high-Tc materials with random grain orientations. Final 2023-12-28T08:58:08Z 2023-12-28T08:58:08Z 2001 Article 10.1088/0953-2048/14/2/310 2-s2.0-0034825291 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034825291&doi=10.1088%2f0953-2048%2f14%2f2%2f310&partnerID=40&md5=ad3c98f2865af104f57bbf69bc79cb5d https://irepository.uniten.edu.my/handle/123456789/29900 14 2 113 116 Scopus |
| spellingShingle | Composition effects Critical current density (superconductivity) Superconducting tapes Thallium compounds Powder-in-tube (PIT) methods High temperature superconductors A-Hamid N. Abd-Shukor R. Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes |
| title | Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes |
| title_full | Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes |
| title_fullStr | Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes |
| title_full_unstemmed | Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes |
| title_short | Transport critical current density of Ag-sheathed (Tl,Cr)Sr2CaCu2O7 high temperature superconductor tapes |
| title_sort | transport critical current density of ag-sheathed (tl,cr)sr2cacu2o7 high temperature superconductor tapes |
| topic | Composition effects Critical current density (superconductivity) Superconducting tapes Thallium compounds Powder-in-tube (PIT) methods High temperature superconductors |
| url_provider | http://dspace.uniten.edu.my/ |