Title :
Electrically Tunable Susceptibility of Synthetic Antiferromagnet Lines
Author :
An, Na ; Jander, Albrecht
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ.
Abstract :
A current-carrying synthetic antiferromagnet (SAF) structure, which consists of two ferromagnetic layers antiferromagnetically coupled to one another through an exchange coupling layer, is being studied. Using typical values of an Ni80Fe20 SAF structure and aided by numerical calculation, we predict that its effective susceptibility can be varied by current. The maximum change in susceptibility and the corresponding critical current are expressed in analytical forms. An electrically tunable thin-film magnetic core can find wide applications in magnetic sensors and tunable magnetic components
Keywords :
antiferromagnetic materials; critical currents; ferromagnetic materials; iron alloys; magnetic cores; magnetic susceptibility; magnetic thin films; nickel alloys; Ni80Fe20; SAF structure; critical current; electrically tunable susceptibility; exchange coupling layer; ferromagnetic layers; magnetic sensors; synthetic antiferromagnet lines; synthetic antiferromagnet structure; thin-film magnetic core; tunable magnetic components; Antiferromagnetic materials; Couplings; Magnetic anisotropy; Magnetic cores; Magnetic devices; Magnetic fields; Magnetic films; Perpendicular magnetic anisotropy; Thin film inductors; Tunable circuits and devices; Magnetic permeability; magnetic susceptibility; magnetic thin films; tunability;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.879084
