scholarly journals Pair-breaking critical current density of magnesium diboride

2003 ◽  
Vol 68 (6) ◽  
Author(s):  
Milind N. Kunchur ◽  
Sung-Ik Lee ◽  
W. N. Kang
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Magnesium Diboride ◽  
Pair Breaking

TEMPERATURE DEPENDENCE OF THE CRITICAL CURRENT DENSITY OF SUPERCONDUCTORS IN TWO-BAND GINZBURG–LANDAU THEORY: APPLICATION TO MgB2

2004 ◽  
Vol 18 (13) ◽  
pp. 1931-1936 ◽  
Author(s):  
I. N. ASKERZADE
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density ◽  
Magnesium Diboride ◽  
Landau Theory ◽  
Ginzburg Landau ◽  
Theory Application ◽  
Gl Theory ◽  
Good Agreement

Temperature dependence of the critical current density j c (T) for the superconducting magnesium diboride MgB 2 is studied in the vicinity of T c by using a two-band Ginzburg–Landau (G–L) theory. The result is in good agreement with experimental data for a bulk MgB 2. Comparision of obtained results with single-band GL theory are presented.

scholarly journals Evaluation of residual stress and texture in isotope based Mg11B2superconductor using neutron diffraction

RSC Advances ◽  
2018 ◽  
Vol 8 (69) ◽  
pp. 39455-39462 ◽  
Author(s):  
Hyunseock Jie ◽  
Wenbin Qiu ◽  
Daniel Gajda ◽  
Jeonghun Kim ◽  
Valiyaparambil Abdulsalam Anvar ◽  
...  
Keyword(s):  
Residual Stress ◽  
Neutron Diffraction ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Magnesium Diboride ◽  
Superconducting Wires ◽  
Commercial Potential ◽  
Niobium Titanium

Magnesium diboride (MgB2) superconducting wires have demonstrated commercial potential to replace niobium–titanium (NbTi) in terms of comparable critical current density.

CRITICAL CURRENT DENSITY PERFORMANCE OF MALIC ACID DOPED MAGNESIUM DIBORIDE WIRES AT DIFFERENT OPERATING TEMPERATURES

2009 ◽  
Vol 23 (17) ◽  
pp. 3497-3502
Author(s):  
X. XU ◽  
J. H. KIM ◽  
Y. ZHANG ◽  
M. JERCINOVIC ◽  
E. BABIC
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Malic Acid ◽  
Magnesium Diboride ◽  
Transport Critical Current Density ◽  
Pinning Force ◽  
Irreversibility Field ◽  
Operating Temperatures ◽  
Practical Level

We investigated the effects of different operating temperatures on the performance of transport critical current density, Jc, for MgB 2 + 10 wt % C 4 H 6 O 5 MgB 2/ Fe wires. It was shown that the Jc values of the malic acid doped wires sintered at 900°C reached 104 Acm-2 at 20 K and 5 T. The Jc value extrapolated to 2 T and 20 K exceeds the practical level of 105 Acm-2. According to the Kramer plots, the pinning force, FK = Jc1/2 x B1/4, is expected to be a linear function of magnetic field B. The irreversibility field, B irr , at which extrapolated FK reaches zero, was 1.8 T at 32.8 K, 2.8 T at 30 K, 5.7 T at 25 K, 8.6 T at 20 K, and 12.5 T at 15 K, respectively.

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