Title :
New soft magnetic material with constant and adjustable permeability
Author :
Fukunaga, Hirotoshi ; Ichiki, Yoshiro ; Nakano, Masaki ; Ohta, Yukihiko ; Kakehashi, Hidenori ; Ogasawara, Hiroshi
Author_Institution :
Fac. of Eng., Nagasaki Univ., Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
New metallic magnetic ribbons with permeability of several hundreds and magnetic loss comparable to that of Mn-Zn ferrites were developed by crystallizing amorphous Fe-Cu-Nb-Si-B ribbons. Although the magnetic properties of as-annealed ribbons showed remarkable instability, they were stabilized by exposing the ribbon to large flux density before usage. The permeability of the stabilized ribbons could be adjusted to the desired value by controlling the flux density exposed for stabilization. The stabilized permeability was constant up to 400 kHz independent of the excited flux density, as long as the excited flux density did not exceed the flux density used for stabilization
Keywords :
amorphous magnetic materials; annealing; boron alloys; copper alloys; ferromagnetic materials; iron alloys; magnetic flux; magnetic leakage; magnetic permeability; metallic glasses; niobium alloys; silicon alloys; soft magnetic materials; 400 kHz; Fe-Cu-Nb-Si-B; as-annealed ribbons; crystallizing amorphous Fe-Cu-Nb-Si-B ribbons; excited flux density; flux density; instability; large flux density; magnetic loss; magnetic properties; metallic magnetic ribbons; permeability; soft magnetic material; stabilization; Air gaps; Amorphous magnetic materials; Amorphous materials; Annealing; Ferrites; Magnetic cores; Magnetic flux; Permeability; Soft magnetic materials; Toroidal magnetic fields;
Journal_Title :
Magnetics, IEEE Transactions on
