Title :
Magneto-inductive element
Author :
Mohri, K. ; Kawashima, K. ; Kohzawa, T. ; Yoshida, H.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
fDate :
3/1/1993 12:00:00 AM
Abstract :
A novel sensitive magnetic head using a magnetoinductive (MI) effect in zero- or negative-magnetostrictive amorphous wires is described. The MI effect refers to the change of an inductance L for an external magnetic field in a ferromagnetic wire element magnetized with a wire AC current IAC. A 5-mm-length MI element using a folded almost zero-magnetostrictive amorphous wire having a 120-μm diameter showed a sensitive rate of change of its inductance of more than 50% for an external low frequency field of about 10 Oe (800 A/m) applied in parallel with the element. The a-wire MI element works for a wire current having frequencies up to 1 MHz
Keywords :
inductance; magnetic heads; magnetic properties of amorphous substances; magnetostrictive devices; 1 MHz; 120 micron; 5 mm; CoSiB; FeCoSiB; FeSiB; ferromagnetic wire element; inductance; magneto-inductive element; magnetoinductive effect; negative-magnetostrictive amorphous wires; sensitive magnetic head; wire AC current; wire current; zero magnetostrictive amorphous wires; Amorphous magnetic materials; Amorphous materials; Circuits; Electric resistance; Inductance; Magnetic flux; Magnetic heads; Magnetostriction; Voltage; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
