  We explored the Fe rich side of the (Mn,Fe)2(P,Ge) magnetocaloric system. The
transition temperature of this system is extremely easy to tune with careful
manipulation of Fe and Ge content as well as stoichiometrical proportions,
which gives rise to the real possibility of lowering the price of this compound
and thus make it economically viable for practical magnetocaloric applications.
Novel and unexpected magnetic properties observed in this system suggest an
exciting potential for permanent magnet application in a limited concentration
range.
