MAGNETIC PROPERTIES OF NANOCRYSTALLINE Fe–Ni ALLOYS SYNTHESIZED BY DIRECT AND PULSE ELECTRODEPOSITION

Abstract

Nanocrystalline iron–nickel alloys are electrodeposited by direct and pulse current densities with the grain sizes between 8–16 nm. XRD patterns showed a variety of structure in alloys from fcc, bcc and mixed (fcc+bcc) by variation of Fe content of alloy. The fcc structure was observed for lower Fe content, dual phase structure for Fe content between 60–70% and bcc structure for higher Fe content. By applying pulse current, an increase in Fe content of alloys was observed. Magnetic property measurements showed a high saturation magnetization for the alloys increased with increase in Fe content and a low coercivity decreased with decrease in grain size for alloys with iron content below 60%.