Title :
(Ni,Fe,Co)-based nanocrystalline soft magnets with near-zero magnetostriction
Author :
Willard, Matthew A. ; Claassen, John C. ; Stroud, Rhonda M. ; Francavilla, Thomas L. ; Harris, Vincent G.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
fDate :
9/1/2002 12:00:00 AM
Abstract :
Nanocrystalline soft magnetic materials have been developed possessing a wide variety of compositions designed to reduce losses and a high saturation induction. Nanocrystalline soft magnetic alloys with compositions (Fe1-x-yCoxNiy)89-zZr7B4Cuz were prepared by the isothermal annealing of melt-spun ribbons. The ribbon samples were characterized by the following techniques: differential thermal analysis, X-ray diffraction, transmission electron microscopy, and vibrating sample magnetometry. Several alloys have been shown to have near-zero magnetostriction. Alloy design, synthesis, and properties of these alloys will be discussed.
Keywords :
X-ray diffraction; annealing; boron alloys; cobalt alloys; coercive force; copper alloys; crystallisation; differential thermal analysis; exchange interactions (electron); ferromagnetic materials; iron alloys; magnetisation; magnetostriction; melt spinning; nanostructured materials; nickel alloys; soft magnetic materials; transmission electron microscopy; zirconium alloys; (Fe1-x-yCoxNiy)89-zZr7B4Cuz; (Fe1-x-yCoxNiy)89-zZr7B4Cuz nanocrystalline soft magnetic materials; X-ray diffraction; alloy design; coercivity; differential thermal analysis; exchange-coupled nanostructures; high saturation induction; isothermal annealing; losses; melt-spun ribbons; near-zero magnetostriction; saturation magnetization; transmission electron microscopy; vibrating sample magnetometry; Cobalt alloys; Copper alloys; Iron alloys; Magnetostriction; Magnets; Nanostructured materials; Nickel alloys; Saturation magnetization; Soft magnetic materials; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802435
