| 摘要 |
PROBLEM TO BE SOLVED: To satisfactorily use a double coil one of which is used for a feedback magnetic field generating coil and the other of which is used for a bias magnetic field generating coil, thereby reducing the size of a magnetic impedance effect element having a feedback magnetic field generating coil and a bias magnetic field generating coil. SOLUTION: A double coil 2 is provided around a magnetic impedance effect element 1 and an inside and outside coils 21, 22 of the double coil 2 are used as a feedback magnetic field generating coil and a bias magnetic field generating coil, respectively.
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