| 摘要 |
A magneto-impedance element includes a magnetic sensitive member 1 having the form of a line, whose electromagnetic characteristics vary depending on a magnetic field acting from the outside, a pulse current flowing from one end portion 1a thereof to the other end portion 1b in an axial direction. A conductive layer 3 is arranged on an insulating layer 2 provided on an outer surface of the magnetic sensitive member 1. A connection portion 4 which electrically connects the magnetic sensitive member 1 and the conductive layer 3 to each other is arranged on the other end portion 1b in the axial direction of the magnetic sensitive member 1. A detection coil 6 which outputs an induced voltage corresponding to an intensity of an external magnetic field acting on the magnetic sensitive member 1 when the pulse current flows in the magnetic sensitive member 1, is wounded around the conductive layer 3. A direction of the pulse current flowing in the magnetic sensitive member 1 and a direction of the pulse current flowing in the conductive layer 3 are opposite to each other.
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