The superconducting properties of co-doped polycrystalline MgB2
In this study we compare the critical current density, the irreversibility line and the upper critical field of four MgB2 polycrystalline samples, which are either undoped or have 5% carbon or 5% carbon plus either 1% aluminium or 2% zirconium. We discuss how care must be taken for the extraction of...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English English |
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Institute of Physics
2007
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| Online Access: | http://psasir.upm.edu.my/id/eprint/7438/ http://psasir.upm.edu.my/id/eprint/7438/1/The%20superconducting%20properties%20of%20co.pdf |
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| author | Moore, J. D. Perkins, G. K. Branford, W. Yates, Karen A. Caplin, A. D. Cohen, L. F. Chen, Soo Kien Rutter, N. A. MacManus Driscoll, Judith L. |
| author_facet | Moore, J. D. Perkins, G. K. Branford, W. Yates, Karen A. Caplin, A. D. Cohen, L. F. Chen, Soo Kien Rutter, N. A. MacManus Driscoll, Judith L. |
| author_sort | Moore, J. D. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this study we compare the critical current density, the irreversibility line and the upper critical field of four MgB2 polycrystalline samples, which are either undoped or have 5% carbon or 5% carbon plus either 1% aluminium or 2% zirconium. We discuss how care must be taken for the extraction of the irreversibility line in such samples. We also show how ac susceptibility and Hall probe imaging can be used to examine whether the samples remain fully connected to the highest available fields. Compared to simple 5% carbon doping we find that co-doping provides modest improvement in the pinning properties at intermediate fields in the carbon plus zirconium doped sample.
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| first_indexed | 2025-11-15T07:29:50Z |
| format | Article |
| id | upm-7438 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:29:50Z |
| publishDate | 2007 |
| publisher | Institute of Physics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-74382015-10-26T02:30:44Z http://psasir.upm.edu.my/id/eprint/7438/ The superconducting properties of co-doped polycrystalline MgB2 Moore, J. D. Perkins, G. K. Branford, W. Yates, Karen A. Caplin, A. D. Cohen, L. F. Chen, Soo Kien Rutter, N. A. MacManus Driscoll, Judith L. In this study we compare the critical current density, the irreversibility line and the upper critical field of four MgB2 polycrystalline samples, which are either undoped or have 5% carbon or 5% carbon plus either 1% aluminium or 2% zirconium. We discuss how care must be taken for the extraction of the irreversibility line in such samples. We also show how ac susceptibility and Hall probe imaging can be used to examine whether the samples remain fully connected to the highest available fields. Compared to simple 5% carbon doping we find that co-doping provides modest improvement in the pinning properties at intermediate fields in the carbon plus zirconium doped sample. Institute of Physics 2007 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/7438/1/The%20superconducting%20properties%20of%20co.pdf Moore, J. D. and Perkins, G. K. and Branford, W. and Yates, Karen A. and Caplin, A. D. and Cohen, L. F. and Chen, Soo Kien and Rutter, N. A. and MacManus Driscoll, Judith L. (2007) The superconducting properties of co-doped polycrystalline MgB2. Superconductor Science and Technology, 20 (9). pp. 278-281. ISSN 0953-2048 http://dx.doi.org/10.1088/0953-2048/20/9/S24 10.1088/0953-2048/20/9/S24 English |
| spellingShingle | Moore, J. D. Perkins, G. K. Branford, W. Yates, Karen A. Caplin, A. D. Cohen, L. F. Chen, Soo Kien Rutter, N. A. MacManus Driscoll, Judith L. The superconducting properties of co-doped polycrystalline MgB2 |
| title | The superconducting properties of co-doped polycrystalline MgB2 |
| title_full | The superconducting properties of co-doped polycrystalline MgB2 |
| title_fullStr | The superconducting properties of co-doped polycrystalline MgB2 |
| title_full_unstemmed | The superconducting properties of co-doped polycrystalline MgB2 |
| title_short | The superconducting properties of co-doped polycrystalline MgB2 |
| title_sort | superconducting properties of co-doped polycrystalline mgb2 |
| url | http://psasir.upm.edu.my/id/eprint/7438/ http://psasir.upm.edu.my/id/eprint/7438/ http://psasir.upm.edu.my/id/eprint/7438/ http://psasir.upm.edu.my/id/eprint/7438/1/The%20superconducting%20properties%20of%20co.pdf |