HUANG Jing-hui, HAO Jie, ZHANG Yan-song, et al. Research and fabrication of high sensitivity GMI miniaturized magnetic sensor[J]. 2016, 35(8): 84-86. DOI: 10.13873/J.1000-9787(2016)08-0084-03.
Co Fe Ni Si B amorphous ribbons prepared by single-roll rapid quenching had high sensitivity in weak magnetic filed after pulse annealing with current density of 400 A / mm2 and pulse separation of 20 ms. The ribbons are used as magnetic sensitive materials to produce a kind of giant magnetic impedance( GMI) magnetic sensors based on longitudinal drive mode. The magnetic senors are characterized by small size
high sensitivity
and good frequency response
and their sensitivity can reach 44. 15 V / m T in weak magnetic field of ± 0. 05 m T
it has a great potential application for high sensitivity miniaturized magnetic sensors.
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