  The magnetic phase diagram in the H-T coordinates has been determined for
{\sigma}-Fe68V32 from the ZFC/FC magnetization measurements. The re-entrant
character of magnetism, going from paramagnetic through ferromagnetic to
spin-glass (SG) states, has been evidenced. The SG phase is magnetically
heterogeneous, because two sub phases can be identified i.e. with the strong
(SG-SI) and the weak (SG-WI) irreversibility. The ireversibility, T_irr and the
crossover, T_cros, temperatures were quantitatively analysed using the
mean-field theory and {\phi}_irr=1.6(2) and {\phi}_cros=0.91(9) values were
obtained. A qualitative agreement with the Gabay-Toulouse model was reached.
The isothermal magnetization measurements point to a soft magnetic behaviour of
the studied sample. The {\gamma} critical exponent was determined with the
Kouvel-Fisher approach yielding the value of {\gamma}=1.0(1) in line with the
mean-field theory.
