Mechanism of enhancement in electromagnetic properties of MgB2 by Nano SiC doping.
A comparative study of pure, SiC, and C doped MgB2 wires has revealed that the SiC doping allowed C substitution and MgB2 formation to take place simultaneously at low temperatures. C substitution enhances H_{c2}, while the defects, small grain size, and nanoinclusions induced by C incorporation and low-temperature processing are responsible for the improvement in J_{c}. The irreversibility field (H_{irr}) for the SiC doped sample reached the benchmarking value of 10 T at 20 K, exceeding that of NbTi at 4.2 K. This dual reaction model also enables us to predict desirable dopants for enhancing the performance properties of MgB2.
Dou
S X
SX
Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia.
Shcherbakova
O
O
Yeoh
W K
WK
Yoeh
W K
WK
Kim
J H
JH
Soltanian
S
S
Wang
X L
XL
Senatore
C
C
Flukiger
R
R
Dhalle
M
M
Husnjak
O
O
Babic
E
E