Abstract
This article presents a kind of high sensitive magnetic transducer which is based on the phase characteristics of giant magnet-impedance (GMI) effect. Then the development process of this new kind of magnetic transducer is discussed with the ideal condition of the GMI sensor elements (the frequency and the amplitude of the excitation current). Compared with the amplitude characteristics of GMI effect, the transducer can make a 10 to 100 times lower frequency. At the ideal condition, the sensor has a sensitivity of 1.6°/Oe, and we can conclude that the sensor has a potential to detect the weak magnetic.
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