  We study the magnetic properties of quark matter in the NJL model with the
tensor interaction. The spin-polarized phase given by the tensor interaction
remains even when the quark mass is zero, while the phase given by the axial
vector interaction disappears. There are two kinds of spin-polarized phases:
one appears in the chiral-broken phase, and the other appears in the
chiral-restored phase where the quark mass is zero. The latter phase can appear
independently of the strength of the tensor interaction.
