Microstructure and n-value of RHQT processed Nb3Al superconductors for NMR uses

Authors :: Takeuchi, T.
Banno, N.
Tagawa, K.
Kobayashi, T.
Tatsumi, N.
Kosuge M.
Kitaguchi, H.
Fukuzaki, T.
Wada, H.
Inoue K.
Kikuchi, A.
Iijima, Y.
Source :: IEEE Transactions on Applied Superconductivity. June, 2004, Vol. 14 Issue 2, p961, 6 p.
Publication Year :: 2004
Abstract: An experiment is conducted to determine the critical current I(sub c) and n-values of (rapidly heating and quenching treatment) RHQT processed Nb3Al conductors at 4.2K in a wide range fields from 14.5 to 25T in relation to the microstructures obtained. The results indicate that the n-value increased monotonously with decreasing field from 25T to 18T, but got saturated to be around 35 at 4.2K in field less than 18T.