High critical current density in PIT MgB2/Ta/Cu wires

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Abstract
The magnetization of dense MgB2 /Ta/Cu wires prepared by the powder-in-tube method is measured by a SQUID magnetometer. The results indicate that the critical temperature of MgB2/Ta/Cu is around 38.4 K with a sharp transition width of 0.6 K. The MgB2/Ta/Cu wire shows a strong flux pinning and the critical current density is higher than 105 A/cm2 (5 K, self-field) and 104 A/cm2 (20 K, 1 T). Also, the irreversibility field of the sample reaches 6.6 T at 5 K.
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Yong, Feng
;
Zhao, Yong
;
Dradhan, A
;
lian, Zhou
;
Liu, X
;
Ji, P
;
Zhang, P
;
Sun, Y
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Publication Year
2002
Resource Type
Journal Article
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UNSW Faculty