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A Study on the Characteristics of Giant Magneto Resistance using Multi Layers  

Kim, Byeong-Woo (Department of Electrical, Electronics & Information Systems University of Ulsan)
Lee, Young-Seok (Institute of e-Vehicle Technology University of Ulsan)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.5, 2008 , pp. 113-118 More about this Journal
Abstract
We have developed an integrated giant magneto resistance using not only circuit but also integrating technique with semiconductor for automobile application. It has four elements used for giant magneto resistance sensor. Ni-Fe/Cu multi layers were prepared on a glass substrate by magnetron sputtering. The dependence of magneto resistance on the thickness of the Ni-Fe and Cu layers was investigated. The MR ratio showed a saturated a peak at Cu layer $10{\AA}$, Ni-Fe layer $50{\AA}$, where the MR ratio is about 8.7% at room temperature. By means of Ni-Fe multi film and specific integrating technique, these new giant magneto resistance sensor showed excellent resistance characteristics.
Keywords
Giant magneto resistance; Inductive; Vehicle speed; Anti-lock brake system; Active sensor; Zero speed;
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