High temperature circular position sensor based on a giant magnetoresistance nanogranular Ag/sub x/Co/sub 1-x/ alloy


A new circular position sensor based on giant magnetoresistances has been developed. The sensing film is an AgCo nanogranular thin film patterned in a circular Wheatstone bridge configuration. This alloy shows a high magnetoresistance (8%) at room temperature within the field generated by an NdFeB permanent magnet that provides a sensitivity of 440 /spl mu… (More)


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