Title :
On the optimization of soft-magnetic properties of metallic glasses by dynamic current annealing
Author :
Escobar, Marco-Antonio ; Yavari, A. Reza ; Barrue, Richard ; Perron, Jean Claude
Author_Institution :
Inst. Nat. Polytech. de Grenoble, St. Martin d´´Heres, France
fDate :
7/1/1992 12:00:00 AM
Abstract :
A dynamic relaxation process has been developed that allows optimization of the soft-magnetic properties of ferromagnetic amorphous tapes during the winding process using Joule heating. Best magnetic properties of commercial FeSiB amorphous tapes are attained after only about ten seconds of annealing in air far below the crystallization temperatures but above the Curie temperature. It is found that structural and stress relaxation phenomena follow nearly the same temperature dependences in this annealing range
Keywords :
boron alloys; coercive force; ferromagnetic properties of substances; glass structure; iron alloys; magnetic annealing; magnetic properties of amorphous substances; metallic glasses; silicon alloys; stress relaxation; winding (process); FeSiB amorphous tapes; Joule heating; annealing in air; coercive field; dynamic current annealing; dynamic relaxation process; ferromagnetic amorphous tapes; metallic glasses; optimization; soft-magnetic properties; stress relaxation phenomena; structural relaxation phenomena; temperature dependences; winding process; Amorphous materials; Annealing; Compressive stress; Crystallization; Glass; Internal stresses; Kinetic theory; Magnetic domains; Temperature; Tensile stress;
Journal_Title :
Magnetics, IEEE Transactions on
