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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >EFFECTS OF MAGNETIC PERMEABILITY AND RESISTIVITY ON MAGNETO-IMPEDANCE IN FE-CU-NB-SI-B ALLOY RIBBONS
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EFFECTS OF MAGNETIC PERMEABILITY AND RESISTIVITY ON MAGNETO-IMPEDANCE IN FE-CU-NB-SI-B ALLOY RIBBONS

机译：磁导率和电阻率对FE-CU-NB-SI-B合金色带中磁导率的影响

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摘要

The giant magneto-impedance (MI) effect and magnetic permeability of Fe73.5Cu1Nb3Si13.5B9 alloy ribbons were measured as a function of the annealing temperature. When the ribbons had been annealed at the optimum temperature (T-a = 843 K) they exhibited both a large MI and excellent soft magnetic properties. The MI was also calculated on the basis of classical electromagnetic theory. It was found that a large change in the effective magnetic permeability, caused by the application of an external magnetic field in an excellent soft magnetic sample, was crucial for the MI effect. Furthermore, the effect of the resistivity on the MI was also investigated. When the resistivity decreases, the eddy current losses increase and the frequency at which the variation in the complex impedance exhibits its maximum moves to a low value; thus the sample exhibits a large MI effect. [References: 11]
机译：测量了Fe73.5Cu1Nb3Si13.5B9合金薄带的巨磁阻抗（MI）效应和磁导率，它是退火温度的函数。当带材在最佳温度（T-a = 843 K）下退火后，它们既显示出大的MI值，又显示出优异的软磁性能。 MI也是基于经典电磁理论计算的。已经发现，由优良的软磁样品中施加外部磁场引起的有效磁导率的大变化对于MI效应至关重要。此外，还研究了电阻率对MI的影响。当电阻率降低时，涡流损耗将增加，并且复阻抗的变化呈现最大值的频率将移至较低的值;因此样品表现出较大的MI效应。 [参考：11]

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