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Magnetic properties and magneto-impedance effect of CoNiFe/Cu composite wires by electroplating

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Published 26 November 2007 2007 The Royal Swedish Academy of Sciences
, , Citation J B Yi et al 2007 Phys. Scr. 2007 132 DOI 10.1088/0031-8949/2007/T129/030

1402-4896/2007/T129/132

Abstract

In this study, CoNiFe/Cu composite wires were deposited using electroplating. The deposited material composition was controlled by adjusting the concentration of Co ions. The results showed that the surface morphology and particle size did not change much with different compositions. However, the coercivity of the composite wires varied significantly for different compositions. A magnetic layer, with the composition of Co30Ni50Fe20, was found to possess a low coercivity value of 0.65 Oe. This is due to the low magneto-strictive factor for the alloy with this composition. In addition, the results showed that the concentration of Fe ions played an important role in achieving low coercivity and high magneto-impedance (MI) effect in the CoNiFe/Cu wires.

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10.1088/0031-8949/2007/T129/030