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The superconducting properties of co-doped polycrystalline MgB2


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


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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Official URL or Download Paper: http://dx.doi.org/10.1088/0953-2048/20/9/S24

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1088/0953-2048/20/9/S24
Publisher: Institute of Physics
Depositing User: Najwani Amir Sariffudin
Date Deposited: 28 Jun 2010 03:37
Last Modified: 26 Oct 2015 02:30
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1088/0953-2048/20/9/S24
URI: http://psasir.upm.edu.my/id/eprint/7438
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