Title :
Magneto-inductive effect (MI effect) in amorphous wires
Author :
Mohri, K. ; Kohsawa, T. ; Kawashima, K. ; Yoshida, H. ; Panina, L.V.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
Circumferential magnetic properties of amorphous magnetic wires (a-wires, for short) with three kinds of compositions (FeSiB, CoSiB, and FeCoSiB) and diameters of 120 μm and 50 μm are investigated applying an AC current using a BH hysteresis tracer. The magnitude of the induced voltage between both ends of the a-wire is decided by a differential permeability regarding circumferential flux change which is considered to occur principally in the outer shell of a-wires. A sensitive magneto-inductive (MI) effect is found in a-wires, in which the value of the inductance of a zero-magnetostrictive a-wire of 5 mm length changes up to about 75% for an external field of 0.8 kA/m (10 Oe). This MI effect is shown to be applicable to small magnetic heads and a cordless data tablet
Keywords :
boron alloys; cobalt alloys; ferromagnetic properties of substances; inductance; iron alloys; magnetic heads; magnetic hysteresis; magnetic properties of amorphous substances; magnetic storage; magnetoelectric effects; silicon alloys; 120 micron; 50 micron; AC current; BH hysteresis tracer; CoSiB; FeCoSiB; FeSiB; amorphous magnetic wires; circumferential flux change; circumferential magnetic properties; cordless data tablet; differential permeability; induced voltage; inductance; magnetoinductive effect; small magnetic heads; zero magnetostrictive wire; Amorphous magnetic materials; Amorphous materials; Inductance; Magnetic flux; Magnetic heads; Magnetic hysteresis; Magnetic properties; Permeability; Voltage; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
