Title: Stress effect on the properties of Ni80Fe20/Au or Cu composite wires via electrodeposition

Authors: Jiabao Yi, Xiaoping Li

Addresses: Faculty of Engineering, Department of Materials Science and Engineering, National University of Singapore, 10 Kent Ridge Road, 119260, Singapore. ' Faculty of Engineering, Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Road, 119260, Singapore

Abstract: NiFe/Au composite wires were deposited by electrodeposition. Current annealing and temperature effect on the properties of NiFe/Au composite wires were investigated in detail. The results indicate that the introduced stress inside the deposited layer leads to increased coercivity and decreased Giant Magneto-Impedance (GMI) effect. Ni80Fe20/Cu composite wire deposited under an optimised condition shows a sensitivity of 4.64 mV/μT when the wires were made as sensing elements of an orthogonal fluxgate sensor. In addition, the work also shows that saccharine and boric acid play important roles for properties of the deposited wires.

Keywords: nickel iron alloys; composite wires; electrodeposition; magnetoimpedance; annealing; temperature effect; stress; saccharine; boric acid; orthogonal fluxgate sensors.

DOI: 10.1504/IJSURFSE.2009.024367

International Journal of Surface Science and Engineering, 2009 Vol.3 No.1/2, pp.135 - 144

Available online: 01 Apr 2009 *

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