Properties of ion-beam-sputtered Ni/Fe artificial lattice film

Abstract

This paper reports the results of experimental and analytical investigations into the properties of ion-beam-sputtered Ni/Fe artificial lattice films. Through structure analysis, it is known that the Fe layer has poor crystallinity and the Ni layer has a face-centered-cubic structure with strong preferred orientation. Additionally, the Ni/Fe lattice film is found to possess good soft-magnetic properties with lower coercivity less than 1 Oe and uniaxial anisotropy as the lattice period is decreased. The saturation magnetization and magnetostriction are also confirmed to be controlled by changing the lattice period and the thickness of Ni and Fe layers. As a result of the simplest model analysis, the very small magnetostriction obtained in this experiment is thought to be realized by the balance in magnetostriction among Ni, Fe, and Ni-Fe interdiffusion layers. Furthermore, a good domain structure is observed in the Ni/Fe lattice film with very small magnetostriction.

Electronic and magneto-transport study across swift heavy ion irradiated exchange coupled Fe/NiO bilayer on Si substrate

“…From the technological applications point of view, this phenomenon plays an important role to pin the magnetization of the specific FM layer which is widely being employed in magnetic read heads and magnetic recording elements in magnetoresistive devices [5]. The magnetic properties of ultrathin magnetic films and multilayered structures, e.g., magnetic anisotropies and exchange coupling often depend strongly on the film microstructure, quality of the interfaces [7,8] as well as also on the interfacial interactions between the layers and the substrate. In addition, chemical composition, crystallinity, grain sizes and their distribution govern the magnetic behavior.…”

Structural and magnetic properties of Fe/Ni multilayers

“…In addition to this, they also exhibit uniaxial anisotropy and possess sufficient thermal stability at high temperature. Therefore considerable efforts have been put-in [3,4,5,6,7,8,9] in order to understand and optimize magnetic properties of these ML structures combining either FM layer with anti-FM or other FM layer. However magnetic properties of such structures are very sensitive to the interface quality, which in turn depends on the interaction and the stability of the deposited layers.…”

Relation between interlayer exchange coupling and nonferromagnetic behavior of Fe inNi∕Fe∕Cosuperlattices

“…Indeed, the magnetic properties of the multilayers depend strongly on their microstructure and the quality of the interfaces. [20][21][22] Later on, Hadj-larbi et al 23 have considered the system Ni/ Fe/ Ni͑100͒ by considering both abrupt Fe/ Ni interfaces and some ordered alloys at the interface following the approach proposed by Freyss et al 24 for Fe/ Cr superlattices. Because Fe-Ni alloys exist in nature, experimentalists cannot avoid some kind of interdiffusion in the preparation of the superlattices.…”