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我们在本文研究了具有不同磁致伸缩系数的Fe_(73.5)Si_(13.5)B_9Nb_3Cu_1和Fe_(73.5)Si_(16.5)B_6Nb_3Cu_1纳米晶带材在0.1-2MHz范围内磁阻和频率的关系。铸态样品分别在施加直流和交流磁场及未施加直流和交流磁场中进行氩气氛560℃退火。在某一固定频率,含13.5％Si的样品加磁场退火和未加磁场退火后相比,可看到性能有了改进。含16.5％Si的样品加磁场退火和未加磁场退火相比,仅观察到磁阻率减小。磁特性分析和X光衍射数据显示,所观察到的磁阻效应改变是由于磁感应各向异性的结果。
In this paper, we study the relationship between the reluctance and the frequency in the range of 0.1-2MHz for Fe 73.5 Si 13.5Ga 9 Nb 3 Cu 1 and Fe 73.5 Si 16.5 B 6 Nb 3 Cu 1 nanocrystalline ribbons with different magnetostriction coefficients. The as-cast samples were annealed in an argon atmosphere at 560 ° C under DC and AC magnetic fields and without applied DC and AC magnetic fields, respectively. At a fixed frequency, samples containing 13.5% Si were annealed with and without a magnetic field anneal, showing improved performance. Magnetic Field Annealing of Samples Containing 16.5% Si Only a decrease in the magnetoresistance was observed compared to annealing without the addition of a magnetic field. Magnetic property analysis and X-ray diffraction data show that the observed change in magnetoresistance effect is due to the magnetic induction anisotropy.