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Significant enhancement of critical current density in Gly-doped MgB2 bulk by tailoring the formation of MgO

Journal Article


Abstract


  • A significant enhancement of critical current density (J c) was obtained in MgB 2 + 3 wt.% glycine samples with a large amount of MgO. The improvements in J c and in the irreversible magnetic field (H irr) are attributed to the pinning effects of high C-substitution level, nanoscale MgO, and to the even boundaries of small grains. This doping method overcomes the degradation of J c under a low field in previously reported SiC-doped samples. Moreover, the formation of MgO was demonstrated to be the result of the reactions between Mg, CO 2 and O 2. © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Authors


  •   Ma, Zongqing (external author)
  •   Cai, Qi (external author)
  •   Yu, Liming (external author)
  •   Liu, Yongchang (external author)

Publication Date


  • 2012

Citation


  • Cai, Q., Liu, Y., Ma, Z. & Yu, L. (2012). Significant enhancement of critical current density in Gly-doped MgB2 bulk by tailoring the formation of MgO. Scripta Materialia, 67 (1), 92-95.

Scopus Eid


  • 2-s2.0-84861186065

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1842

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 92

End Page


  • 95

Volume


  • 67

Issue


  • 1

Abstract


  • A significant enhancement of critical current density (J c) was obtained in MgB 2 + 3 wt.% glycine samples with a large amount of MgO. The improvements in J c and in the irreversible magnetic field (H irr) are attributed to the pinning effects of high C-substitution level, nanoscale MgO, and to the even boundaries of small grains. This doping method overcomes the degradation of J c under a low field in previously reported SiC-doped samples. Moreover, the formation of MgO was demonstrated to be the result of the reactions between Mg, CO 2 and O 2. © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Authors


  •   Ma, Zongqing (external author)
  •   Cai, Qi (external author)
  •   Yu, Liming (external author)
  •   Liu, Yongchang (external author)

Publication Date


  • 2012

Citation


  • Cai, Q., Liu, Y., Ma, Z. & Yu, L. (2012). Significant enhancement of critical current density in Gly-doped MgB2 bulk by tailoring the formation of MgO. Scripta Materialia, 67 (1), 92-95.

Scopus Eid


  • 2-s2.0-84861186065

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1842

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 92

End Page


  • 95

Volume


  • 67

Issue


  • 1