Data tablet utilizing Matteucci effect of amorphous magnetic wire matrix

Author

Kimura, K. ; Kanoh, M. ; Kawashima, K. ; Mohri, K. ; Takagi, M. ; Panina, L.V.

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4861

Lastpage

4863

Abstract

An accurate and reliable data tablet or digitizer was constructed utilizing the Matteucci effect for an amorphous magnetic wire matrix. Cold-drawn amorphous wires with 50-μm diameter having a composition of (Fe6Co94)72.5Si12.5B15 were used in a tablet plane. An AC magnetic field of 140 kHz was perpendicularly applied to the amorphous wires to induce a double-frequency Matteucci voltage between both ends of each amorphous wire. A small DC current of 2-5 mA was applied to the wire-axial direction for initial setting of its circular magnetization direction when the Matteucci voltage was detected. External disturbance fields did not influence on the Matteucci effect in the folded amorphous wires with a small DC current. Hand-written characters were shown on a CRT display using the data tablet

Keywords

Matteucci effect; analogue-digital conversion; computer peripheral equipment; magnetic properties of amorphous substances; magnetostrictive devices; metallic glasses; (Fe₆Co₉₄)_72.5Si_12.5B ₁₅ wire; 140 kHz; AC magnetic field; Matteucci effect; amorphous magnetic wire matrix; data tablet; digitizer; double-frequency Matteucci voltage; folded amorphous wires; small DC current; Amorphous magnetic materials; Amorphous materials; Magnetic anisotropy; Magnetic flux; Magnetization; Magnetostriction; Maxwell equations; Stress; Voltage; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278971

Filename

278971