  Based on shooting method, we numerically investigate the properties of
holographic paramagnetism-ferromagnetism phase transition in the presence of
Gauss-Bonnet (\emph{GB}) corrections on the gravity side. On the matter field
side, however, we consider the effects of the Power-Maxwell (\emph{PM})
nonlinear electrodynamics on the phase transition of this system. For this
purpose, we introduce a massive $2-$form coupled to \emph{PM} field, and
neglect the effects of $2-$form fields and gauge field on the background
geometry. We observe that increasing the strength of both the power parameter
$q$ and \emph{GB} coupling constant $\alpha$ decrease the critical temperature
of the holographic model, and lead to the harder formation of magnetic moment
in the black hole background. Interestingly, we find out that at low
temperatures, the spontaneous magnetization and ferromagnetic phase transition
happen in the absence of external magnetic field. In this case, the critical
exponent for magnetic moment has the mean field value, $1/2$, regardless of the
values of $q$ and $\alpha$. In the presence of external magnetic field,
however, the magnetic susceptibility satisfies the Cure-Weiss law.
