Magneto-impedance element, and magnetic head, thin film magnetic head, azimuth sensor and autocanceler using the same
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United States of America Patent
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Feb 6, 2001
Grant Date -
N/A
app pub date -
Aug 27, 1998
filing date -
Aug 28, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magneto-impedance element, showing a change in impedance in response to an external magnetic field when an alternating current is applied, is composed of a glassy alloy. The glassy alloy is composed of at least one base metal selected from the group consisting of Fe, Co and Ni; at least one additional metal selected from the group consisting of Zr, Nb, Ta, Hf, Mo, Ti and V; and B. The glassy alloy has a temperature region .DELTA.T.sub.x, of the supercooling liquid zone of 20.degree. C. or more which is represented by the equation .DELTA.T.sub.x =T.sub.x -T.sub.g wherein T.sub.x is the crystallization temperature and T.sub.g is the glass transition temperature. A magnetic head, a thin film magnetic head, an azimuth sensor and an autocanceler are provided with the MI element.
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