MOSSBAUER STUDY OF Fe-Ni INVAR ALLOYS MINGLED WITH Pr

The magnetic structural properties and the effect of trace in Pr mingled upon the structure and properties of the Fe-Ni Invar alloy have been analyzed by M(?)ssbauer spectrum. It was resulted that the co-existence of Fe ions with ferromagnetism and anti-ferromagnetism seems to the nature of the alloy having the Invar charater. And the Invar character of the Fe-Ni Invar alloy maintains even mingled with a trace of Pr, yet its macro-magnetism is reduced.