DataVXAIP AdvancesPaper
journal article·2014-01-01Open access

Microstructural and crystallographic imperfections of MgB2 superconducting wire and their correlation with the critical current density

Mohammed Shahabuddin, Nasser S. Alzayed, Sangjun Oh, Seyong Choi, Minoru Maeda, Satoshi Hata, Yusuke Shimada, Md Shahriar Al Hossain, Jung Ho Kim

AIP Advances· Volume 4· Issue 1
Publisher pageOpen full text
Source abstract

Abstract

A comprehensive study of the effects of structural imperfections in MgB2 superconducting wire has been conducted. As the sintering temperature becomes lower, the structural imperfections of the MgB2 material are increased, as reflected by detailed X-ray refinement and the normal state resistivity. The crystalline imperfections, caused by lattice disorder, directly affect the impurity scattering between the π and σ bands of MgB2, resulting in a larger upper critical field. In addition, low sintering temperature keeps the grain size small, which leads to a strong enhancement of pinning, and thereby, enhanced critical current density. Owing to both the impurity scattering and the grain boundary pinning, the critical current density, irreversibility field, and upper critical field are enhanced. Residual voids or porosities obviously remain in the MgB2, however, even at low sintering temperature, and thus block current transport paths.
Source: crossref · Quality: baseline

Research context

Ceramics & glasses

OpenAlex topics: Superconductivity in MgB2 and Alloys · Physics of Superconductivity and Magnetism · Iron-based superconductors research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

King Saud University 1 Department of Physics and Astronomy, College of Science, P. O. Box 2455, , Riyadh 11451, Kingdom of Saudi Arabia

National Fusion Research Institute 2 Materials Research Team, , Yueeong, Daejeon 305-333, Republic of Korea

Korea Basic Science Institute 3 Busan Center, , Geumjeong, Busan 609-735, Republic of Korea

Nihon University 4 Department of Physics, College of Science and Technology, , 1-8 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan

Kyushu University 5 Interdisciplinary Graduate School of Engineering Sciences, , 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan

University of Wollongong 6 Institute for Superconducting and Electronic Materials, , North Wollongong, New South Wales 2500, Australia

References (37)

Show source-provided references
1. Supercond. Sci. Technol. · 2007 · 20 · 26410.1088/0953-2048/20/9/S22 ↗
2. Supercond. Sci. Technol. · 2007 · 20 · 65810.1088/0953-2048/20/7/012 ↗
3. Supercond. Sci. Technol. · 2009 · 22 · 08500210.1088/0953-2048/22/8/085002 ↗
4. Supercond. Sci. Technol. · 2012 · 25 · 11502210.1088/0953-2048/25/11/115022 ↗
5. Supercond. Sci. Technol. · 2009 · 22 · 01500310.1088/0953-2048/22/1/015003 ↗
6. J. Appl. Phys. · 2011 · 109 · 02390410.1063/1.3532033 ↗
7. Supercond. Sci. Technol. · 2012 · 25 · 11502310.1088/0953-2048/25/11/115023 ↗
8. J. Phys. Soc. Jpn. · 2012 · 81 · 01101010.1143/JPSJ.81.011010 ↗
9. NPG Asia Mater. · 2012 · 4 · E310.1038/am.2012.3 ↗
10. J. Appl. Phys. · 2007 · 102 · 01391310.1063/1.2750409 ↗
11. J. Appl. Phys. · 2009 · 105 · 03390310.1063/1.3068361 ↗
12. Supercond. Sci. Technol. · 2006 · 19 · 51210.1088/0953-2048/19/6/018 ↗
13. J. Mater. Sci. · 2013 · 48 · 13210.1007/s10853-012-6901-5 ↗
14. Physica C · 2008 · 468 · 1510.1016/j.physc.2008.05.095 ↗
15. Ceram. Inter. · 2013 · 39 · 429910.1016/j.ceramint.2012.11.011 ↗
16. Physica C · 2013 · 490 · 2010.1016/j.physc.2013.04.060 ↗
17. Appl. Phys. Lett. · 2007 · 91 · 08250710.1063/1.2773942 ↗
18. Supercond. Sci. Technol. · 2012 · 25 · 12500110.1088/0953-2048/25/12/125001 ↗
19. Supercond. Sci. Technol. · 2008 · 21 · 10300110.1088/0953-2048/21/10/103001 ↗
20. Adv. Mater. · 2012 · 23 · 494210.1002/adma.201101243 ↗
21. Appl. Phys. Express · 2012 · 5 · 01310110.1143/APEX.5.013101 ↗
22. Supercond. Sci. Technol. · 2007 · 20 · 44810.1088/0953-2048/20/5/007 ↗
23. Mater. Sci. Forum · 2000 · 321–324 · 19810.4028/www.scientific.net/MSF.321-324.198 ↗
24. Nature · 2001 · 410 · 6310.1038/35065039 ↗
25. 1993
26. J. Appl. Crystallogr. · 1987 · 20 · 7910.1107/S0021889887087090 ↗
27. J. Appl. Phys. · 2008 · 104 · 06391110.1063/1.2980275 ↗
28. Physica C · 2005 · 423 · 4510.1016/j.physc.2005.03.022 ↗
29. Scripta Mater. · 2011 · 64 · 105910.1016/j.scriptamat.2011.02.020 ↗
30. Supercond. Sci. Technol. · 2004 · 17 · L4110.1088/0953-2048/17/10/L03 ↗
31. J. Appl. Phys. · 2002 · 92 · 35110.1063/1.1479470 ↗
32. Supercond. Sci. Technol. · 2007 · 20 · 102610.1088/0953-2048/20/10/023 ↗
33. Supercond. Sci. Technol. · 2003 · 16 · R1710.1088/0953-2048/16/6/201 ↗
34. Physica C · 2005 · 424 · 110.1016/j.physc.2005.04.016 ↗
35. Physica C · 2007 · 456 · 2210.1016/j.physc.2007.01.029 ↗
36. Philosophical Magazine · 2005 · 85 · 1610.1080/14786430500036678 ↗
37. Phys. Rev. Lett. · 2003 · 90 · 24700210.1103/PhysRevLett.90.247002 ↗