X.H.Mao
,
Y.Zhou
,
M.S.Wu
,
B.C.Cai
金属学报(英文版)
Sensitive magnetic field sensor with good performances can be fabricated utilizing the giant magneto-impedance (GMI) effect of soft magnetic multi-layer thin films. The transverse and longitudinal GMI effect in patterned FeSiB/Cu/FeSiB tri-layer films with the change of external magnetic field and frequency were studied at the same time. The change of the impedance of the films with the external magnetic fieldand frequency was shown. Comparing the longitudinal and transverse effect, the transverseeffect has a larger linear range from zero magnetic field to a quite large magnetic field at all frequencies, and the change still were not saturated until the external magnetic field reached 1.2×10^4A/m, which illustrated that the films can be utilized to detect laraer maanetic fields than now presented GMI sensors.
关键词:
giant magneto-impedance effect
,
null
,
null
蒋峰
功能材料与器件学报
利用退火处理后的Co66.3 Fe3.7 Si12B18非晶带作为敏感元件,研制出一种基于非晶带巨磁阻抗效应的磁场测量仪.设计了传感器的信号处理电路及测量仪的硬件电路,并给出实验结果.实验表明,该测量仪能够检测-260-+ 260A/m范围内的微弱磁场,可应用于地球磁场、环境磁场等微弱磁场检测领域.
关键词:
巨磁阻抗效应
,
磁场测量仪
,
非晶带
