Properties of Ti alloyed multifilamentary Nb3Sn wires by internal tin process

Influence of Ti addition to the Sn core on the critical current density J
c
of multlfilamentary Nb
3
Sn wires fabricated by the internal tin process was studied. The addition ( ∼1.5 wt% Ti) improved the values of J
c
at very high magnetic fields over those for the pure Nb
3
Sn, e.g.,
J_{c} \sim 140
A/mm
²
at 18 T. This is 3-4 times greater than a similarly processed pure Nb
3
Sn wire and is within ∼10 % of the highest critical current density measured for the Ti alloyed bronze processed Nb
3
Sn wires.