o68.15Fe4.35Si12.5B15非晶丝的GMI磁滞效应
he GMI-hysteresis of Co68.15Fe4.35Si12.5B15 amorphous wir
本文研究了Co68.15Fe4.35Si12.5B15非晶丝的巨磁阻抗效应以及其GMI磁滞效应。实验所用丝的直径为75μm,采用旋转水中纺丝法制得。用Agilent 4294A阻抗分析仪测量其阻抗变化。得到阻抗最大变化率及ΔZ/Z)达到了204.2％/Oe，磁场灵敏及(ΔZ/Z)/ΔH度达到了394.8%/Oe。得到丝的GMI比变化率小于1%。从实验结果看，这种非晶丝要获得较小的GMI磁滞效应，则存在一个与其相对应的最佳的处理电流、激发电流、频率、以及工艺等参数。
he giant magneto-impedance (GMI) and the GMI-hysteresis of Co68.15Fe4.35Si12.5B15 amorphous wire has been studied in this paper. The amorphous wire was prepared by the so-called in-rotating-water quenching technique, and then drawn to 75μm . At last, the change of the GMI on the frequency of the ac current under different external magnetic field was measured on Agilent 4294A Precision Impedance Analyzer. The maximum GMI ratio of 204.2% is observed. Field sensitivity,(ΔZ/Z)/ΔH, has reached 394.8%. In this experiment, the ratio of GMI-contrast can be control under 1%. From the consequence of the experiment, if we want to get a good result which the ratio of GMI-contrast be small 1%, we must found optimum parameters of this amorphous wire, such as the DC current of annealing、the length of the wire、the time of annealing、the driving current and the driving frequency.
郝洁、强文江、孙光飞、黎文安、雍树军、刘春伟、陈菊芳 、郎玉婧
电工材料电气测量技术、电气测量仪器
GMI旋转水中纺丝法非晶丝GMI磁滞效应激发电流激发频率
GMIin rotating water-quenching techniqueamorphous wireGMI-hysteresisthe driving currentthe driving frequency
郝洁,强文江,孙光飞,黎文安,雍树军,刘春伟,陈菊芳 ,郎玉婧.o68.15Fe4.35Si12.5B15非晶丝的GMI磁滞效应[EB/OL].(2007-10-31)[2025-08-04].http://www.paper.edu.cn/releasepaper/content/200710-589.点此复制
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