Magnetic properties of the electrolytic super alloys Ni‐Fe

Abstract

This paper will be devoted to the study of the magnetic properties of the layers of Ni 100-x Fe x alloys, obtained by electrolytic deposit. The chemical composition of these alloys varies, according to the content of both constituents nickel and iron, from 50 at% to 90 at% of nickel, for a layer thickness of about 10 µm. We have started a systematic study in order to determine the influence of the atomic composition of nickel on specific magnetization to saturation and the hysteresis loops, as well as the thermomagnetic effects. During our investigations, we noted that, firstly specific magnetization to saturation grows almost linearly with the content of iron of alloy. Secondly, the hysteresis loops present all a low coercitive force and a strong susceptibility. Finally we underlined that the effect of the heat treatment is very strong for the low contents of iron of alloy.

Facile Synthesis and Growth Mechanism of Flowerlike Ni−Fe Alloy Nanostructures

“…It is known that M s is proportional to the number of Bohr magnetons. The number of Bohr magnetons for iron is slightly higher than that of nickel . Thus, the increase in M s of our Ni−Fe alloy is caused by the increase in the number of Bohr magnetons because some Ni atoms in the crystal lattice have been replaced by Fe atoms.…”

“…The number of Bohr magnetons for iron is slightly higher than that of nickel. 14 Thus, the increase in M s of our Ni-Fe alloy is caused by the increase in the number of Bohr magnetons because some Ni atoms in the crystal lattice have been replaced by Fe atoms. Compared with the quasisphere particles, the flowerlike Ni-Fe alloy has a lower saturation magnetization because of its higher specific surface.…”

“…[7][8][9][10][11] As an important functional material, Ni 1-x Fe x alloy shows extraordinary electrical, catalytic, and magnetic properties and has the potential technological applications in catalysis, sensors, electromagnetic shielding and absorbing materials, and so forth. [12][13][14] Great efforts have been focused on the fabrication of nickel-iron alloyed micro-/nanoparticles by various physical and chemical methods. [15][16][17][18][19][20][21][22] Among these methods, the solution-phase co-reduction route usually has advantages of the mildness, simplicity, low-cost, and large-scale production and has been adopted to successfully prepare some low-dimensional Ni-Fe alloy nanostructures including nanospheres 19 and polycrystalline nanorods.…”

“…Hierarchical nanostructures assembled by low-dimensional building blocks including nanoparticles, , nanorods, , and nanoplates , often exhibit significant morphology and/or size-dependent properties. − As an important functional material, Ni 1− x Fe x alloy shows extraordinary electrical, catalytic, and magnetic properties and has the potential technological applications in catalysis, sensors, electromagnetic shielding and absorbing materials, and so forth. − Great efforts have been focused on the fabrication of nickel−iron alloyed micro-/nanoparticles by various physical and chemical methods. − Among these methods, the solution-phase co-reduction route usually has advantages of the mildness, simplicity, low-cost, and large-scale production and has been adopted to successfully prepare some low-dimensional Ni−Fe alloy nanostructures including nanospheres and polycrystalline nanorods . However, the fabrication of 3D hierarchical Ni−Fe alloy nanostructures via a solution-phase chemical reduction approach still remains a challenge .…”