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Co67.5Fe4.5Ni3Si10B15非晶絲巨磁阻抗性能及其溫度穩(wěn)定性研究
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國家高技術研究發(fā)展計劃（“863”計劃）（2007AA12Z328）


Giant Magneto-Impedance Effect and Thermal Properties of the Co67.5Fe4.5Ni3Si10B15 Amorphous Wires
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    摘要:

    研究了Co67.5Fe4.5Ni3Si10B15非晶絲巨磁阻抗性能及其溫度特性。該非晶絲采用內(nèi)圓水紡法制備，并在氮氣保護下進行直流應力退火。在氮氣中退火的非晶絲樣品具有良好的表面光潔度以及較好的軟磁性能和巨磁阻抗效應（GMI）。在激勵功率6 dBm、激勵頻率70 MHz的測試條件下，磁阻抗變化率高達125%，巨磁阻抗最大靈敏度達3.92%/A·m-1。該非晶絲的巨磁阻抗性能在233~353 K溫度范圍內(nèi)具有優(yōu)異的溫度穩(wěn)定性，為非晶絲應用于工業(yè)磁傳感器等領域奠定了基礎。

    Abstract:

    The giant magneto-impedance (GMI) effect and thermal properties of the Co67.5Fe4.5Ni3Si10B15 amorphous wires, which were prepared by the in-rotating water spinning technique and annealed by passing through a direct current with a tensile stress in N2 atmosphere were investigated. After annealing in N2, the amorphous wire sample exhibits preferable brightness, soft magnetic properties and giant magneto-impedance effect. When the measurement was carried out with an exciting power of 6 dBm and an exciting frequency of 70 MHz, the samples were characterized with the largest impedance change of 125% and the biggest sensitivity of 3.92%/A·m-1. The Co67.5Fe4.5Ni3Si10B15 amorphous wires have the excellent thermal stability in the temperature range of 233-353 K, which makes this kind of amorphous wires promising materials in magnetic sensor application fields.

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魏 倩,韓 躍,楊 昊,孫志輝,黃毓強. Co67.5Fe4.5Ni3Si10B15非晶絲巨磁阻抗性能及其溫度穩(wěn)定性研究[J].稀有金屬材料與工程,2011,40(8):1462~1465.[Wei Qian, Han Yue, Yang Hao, Sun Zhihui, Huang Yuqiang. Giant Magneto-Impedance Effect and Thermal Properties of the Co67.5Fe4.5Ni3Si10B15 Amorphous Wires[J]. Rare Metal Materials and Engineering,2011,40(8):1462~1465.]
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  • 收稿日期:2010-08-20
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