Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.

Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.

Polycrystalline MgB2 samples were prepared from 99.98% purity Mg powder and different mixtures of relatively impure boron (99% pure crystalline boron and 95–97% amorphous boron) precursor powders. At both 6 and 20 K, for the mixed boron samples a doubling in Jc was observed over the highest values f...

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Main Authors: Chen, Soo Kien, MacManus-Driscoll, Judith L.
Format: Article
Language:English
English
Published: IOP Publishing Ltd 2009
Online Access:http://psasir.upm.edu.my/id/eprint/14507/1/Enhanced%20critical%20current%20densities%20in%20MgB2%20by%20mixing%20relatively%20impure%20boron%20powders.pdf
http://psasir.upm.edu.my/id/eprint/14507/
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Institution: Universiti Putra Malaysia
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spelling my.upm.eprints.145072015-11-04T01:17:53Z http://psasir.upm.edu.my/id/eprint/14507/ Enhanced critical current densities in MgB2 by mixing relatively impure boron powders. Chen, Soo Kien MacManus-Driscoll, Judith L. Polycrystalline MgB2 samples were prepared from 99.98% purity Mg powder and different mixtures of relatively impure boron (99% pure crystalline boron and 95–97% amorphous boron) precursor powders. At both 6 and 20 K, for the mixed boron samples a doubling in Jc was observed over the highest values for single precursor samples. It is shown that the enhanced Jc results from the mixing effect of using different reaction rates of the different boron precursor powders. The work represents a cost-effective means of significantly improving current carrying Performance in MgB2 conductors. IOP Publishing Ltd 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14507/1/Enhanced%20critical%20current%20densities%20in%20MgB2%20by%20mixing%20relatively%20impure%20boron%20powders.pdf Chen, Soo Kien and MacManus-Driscoll, Judith L. (2009) Enhanced critical current densities in MgB2 by mixing relatively impure boron powders. Superconductor Science and Technology, 22 (6). pp. 1-5. ISSN 0953-2048 10.1088/0953-2048/22/6/065009 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Polycrystalline MgB2 samples were prepared from 99.98% purity Mg powder and different mixtures of relatively impure boron (99% pure crystalline boron and 95–97% amorphous boron) precursor powders. At both 6 and 20 K, for the mixed boron samples a doubling in Jc was observed over the highest values for single precursor samples. It is shown that the enhanced Jc results from the mixing effect of using different reaction rates of the different boron precursor powders. The work represents a cost-effective means of significantly improving current carrying Performance in MgB2 conductors.
format Article
author Chen, Soo Kien
MacManus-Driscoll, Judith L.
spellingShingle Chen, Soo Kien
MacManus-Driscoll, Judith L.
Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.
author_facet Chen, Soo Kien
MacManus-Driscoll, Judith L.
author_sort Chen, Soo Kien
title Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.
title_short Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.
title_full Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.
title_fullStr Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.
title_full_unstemmed Enhanced critical current densities in MgB2 by mixing relatively impure boron powders.
title_sort enhanced critical current densities in mgb2 by mixing relatively impure boron powders.
publisher IOP Publishing Ltd
publishDate 2009
url http://psasir.upm.edu.my/id/eprint/14507/1/Enhanced%20critical%20current%20densities%20in%20MgB2%20by%20mixing%20relatively%20impure%20boron%20powders.pdf
http://psasir.upm.edu.my/id/eprint/14507/
_version_ 1643825653299019776

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