POSITIONING ERROR AT THE ANGULAR GMR NANOWIRE SENSOR

D. Costineanu, C. Fosalau, C. Zet, I. Tudosa

Metrology & Measurement Systems, METSIM 2009

November 5-6, 2009, Faculty of Electrical Engineering, Politehnica University, Bucharest, Romaina

pp. 52-55, ISBN 978-606-8082-22-6

Electrodeposited multilayered nanowires, grown in a polycarbonate membrane, represent a new medium in which perpendicular to the plane giant magnetoresistance (GMR) has been observed. These nanostructures can reach a GMR change of up to 22% at ambient temperature. In this paper we present the application of the multilayered nanowires and a preliminary characterization of the positioning error of the angular sensor. The sensitive elements are mounted in a special arrangement (two 45 degrees phase shifted Wheatstone bridges) and provide a pair of sine-cos waveforms as outputs.