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研究在250℃退火温度下非晶FeCuNbSiB薄膜的巨磁阻抗效应.X-ray谱和Mossbauer谱显示样品为非晶状态.导电层的厚度为2μm,磁性层的厚度为1μm.三明治结构的最大阻抗效应为20%.为了提高巨磁阻抗效应.在两磁性层之间加入了绝缘层SiO2,在250℃退火温度下最大阻抗效应为62%.随着驱动电流频率的增大.磁阻抗效应曲线由随磁场的单调下降变为出现峰的结构.
The giant magneto-impedance effect of amorphous FeCuNbSiB thin films was investigated at an annealing temperature of 250 ° C. X-ray and Mossbauer spectra showed that the samples were amorphous, the thickness of the conductive layer was 2 μm, and the thickness of the magnetic layer was 1 μm. The maximum impedance of the sandwich structure The effect is 20% .In order to improve the giant magneto-impedance effect, an insulating layer SiO2 is added between the two magnetic layers, the maximum impedance effect is 62% at the annealing temperature of 250 DEG C. As the driving current frequency increases, the magneto-impedance effect curve By the monotonous decline with the magnetic field into a peak structure.