Structural and Superconducting Property Variations with Nominal Mg Non-Stoichiometry in MgxB2 and Its Enhancement of Upper Critical Field

Chen, Soo Kien and Serquis, Adriana and German, Serrano and Yates, Karen A. and Blamire, Mark G. and Guthrie, Douglas and Cooper, John and Wang, Haiyan and Margadonna, Serena and MacManus Driscoll, Judith L. (2008) Structural and Superconducting Property Variations with Nominal Mg Non-Stoichiometry in MgxB2 and Its Enhancement of Upper Critical Field. Advanced Functional Materials, 18 (1). pp. 113-120. ISSN 1616-301X

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Official URL: http://dx.doi.org/10.1002/adfm.200700254

Abstract

By applying a combination of characterisation tools, changes in structural and superconducting properties with nominal Mg non-stoichiometry in MgxB2 are found. The non-stoichiometry produces enhanced in-field critical current densities (Jc’s) and upper critical field / irreversibility field (Hc2/Hirr(T)) values. Upper critical fields of ∼ 21 T (4.2 K) were obtained in nominal Mg-deficient samples compared to ∼ 17 T (4.2 K) for near-stoichiometric samples.

Item Type:Article
Faculty or Institute:Faculty of Science
Publisher:Wiley Blackwell
DOI Number:10.1002/adfm.200700254
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1002/adfm.200700254
ID Code:7006
Deposited By: Najwani Amir Sariffudin
Deposited On:31 May 2010 08:01
Last Modified:28 Jul 2010 01:29

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