  Very sharp magnetization step is observed across the field induced
antiferromagnetic to ferromagnetic transition in various doped-CeFe$_2$ alloys,
when the measurement is performed below 5K. In the higher temperature regime
(T$>$5K) this transition is quite smooth in nature. Comparing with the recently
observed similar behaviour in manganites showing colossal magnetoresistance and
magnetocaloric material Gd$_5$Ge$_4$ we argue that such magnetization step is a
generalized feature of a disorder influenced first order phase transition.
