-
摘要: 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Mssbauer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.Abstract: Giant magneto-impedance (GMI) has been observed in amorphous FeCuNbSiB/Cu/FeCuNbSiB sandwiched films annealed at 250℃.The conductive layer is about 2μm while the outer magnetic layers are about 1μm thick each. The GMI ratio of 20% has been obtained. In the goal to improve this ratio, two insulator layers have been used between the different layers followed by an annealing process at 250℃.A GMI ratio of 62% has been obtained. The displacement of GMI peaks with increasing of driving current frequency appears also. The amorphous state of the films was confirmed by an X-ray diffraction and Mssbauer spectrum.
-
点击查看大图
计量
- 文章访问数: 2899
- HTML全文浏览量: 17
- PDF下载量: 373
- 被引次数: 0
下载: