MAGNETIC INTERACTIONS IN ΔM PLOTS FOR NANOCRYSTALLINE Sm-Fe-Ti ALLOYS.

Abstract

Nanocrystalline Sm-Fe-Ti alloys were obtained via mechanical alloying involving 5 h of milling. A characterization of nanocrystalline Sm-Fe-Ti alloys via transmission electron microscopy (TEM) shows the nanocrystalline characteristics of the alloys. Exchange and dipolar interactions were investigated by measuring isothermal remanent magnetization and normalized direct current demagnetization curves. The effects of the interaction field in analyzing the magnetic interactions in nanocrystalline Sm-Fe-Ti alloys were modelled using the ΔM plots.