  C14 Nb(Fe89.4Al10.6)2 Laves phase intermetallic compound was investigated by
DC magnetization (M) measurements performed in the temperature (T) interval of
20 to 175 K,under an applied magnetic field (H) ranging between 50 and 1250 Oe.
Magnetization curves were recorded in the field-cooled (FC) and in the
zero-field-cooled (ZFC) modes. They clearly showed an irreversible character
that vanished at H=1250 Oe. Both magnetization curves exhibited well-defined
peaks around T_N =72.3 K whose positions were H-independent, so they were
identified as the compound's N\'eel temperature. The existence of
irreversibility which decreases with H testify to a re-entrant character of
magnetism in the studied compound. An increase of both MFC and MZFC observed
below TN likely indicates a mixed i.e. ferromagnetic and antiferromagnetic
ground magnetic state of the studied system.
