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Citation: ZHANG Geng-Hua, CHENG Jin-Ke, WANG Qing-Jiang, YUAN Wang-Zhi, ZHAO Zhen-Jie. Effect of pH on the Giant Magneto-impedance Properties of Cu/CoNiP Composite Wires prepared by Chemical Deposition[J]. Chinese Journal of Applied Chemistry, ;2008, 25(11): 1277-1280. shu

Effect of pH on the Giant Magneto-impedance Properties of Cu/CoNiP Composite Wires prepared by Chemical Deposition

1.
a Department of Physics, MOE Engineering Research Center for Nanophotonics & Advanced Instrumentation, East China Normal University, Shanghai 200062;
2.
b Department of Chemistry, East China Normal University, Shanghai

Corresponding author: ZHAO Zhen-Jie,
Received Date: 22 October 2007
Available Online: 31 March 2008
Fund Project: 国家自然科学基金(20575022) (20575022)上海市科学技术委员会纳米中心基金(0652nm036,0752nm004)资助项目 (0652nm036,0752nm004)

Cu/CoNiP composite wires were prepared by chemical deposition on Cu wires of 90 μm diameter.The influence of pH on the properties of the composite wires and the GMI effect was studied.It was found that pH can influence the composition and magnetic structure of the deposited layer,which affects the GMI effect of the composite wires.With the increase of pH in a certain range,the content of Ni in the deposited layer increases,and the contents of Co and P decrease.Increasing pH also results in the transformation of the magnetic deposited layer from longitudinal structure to transverse structure.The sample prepared by such a method can exhibit a maximum ΔZ/Z of 240% at 60 kHz,and it has a low critical frequency and a wide application frequency range.
- giant magneto-impedance,
- chemical deposition,
- CoNiP,
- pH
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