High sensitivity magnetic sensor consisting of ferromagnetic alloy, piezoelectric ceramic and high-permeability FeCuNbSiB
High sensitivity magnetic sensor consisting of ferromagnetic alloy, piezoelectric ceramic and high-permeability FeCuNbSiB
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DOI：
10.1016/j.jallcom.2011.01.173
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发表时间：
2011-04
影响因子：
6.2
通讯作者：
Lei Chen;Ping Li;Y. Wen;Dong Wang
中科院分区：
文献类型：
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作者：
Lei Chen;Ping Li;Y. Wen;Dong Wang
采用铁磁性恒弹合金(Feni-Face)、压电铅(PZT-8H)和高磁导率的FeCuNbSiB(Fe73.5Cu1Nb3Si13.5B9)研制了一种高灵敏度磁电(ME)复合传感器。高磁导率的FeCuNbSiB薄带作为动态驱动器，提高了Feni面的有效压磁系数d33。同时，FeCuNbSiB/FeNi-FACE/PZT-8H/FeNi-FACE/FeCuNbSiB(FeFFFe)复合传感器具有较高的有效机械品质因数(QM)，是特芬诺-D/∼-8H/特芬诺-D(MPM)传感器的7.7倍。由于谐振时的ME电压与压磁系数和Qm的乘积成正比，因此可以获得更强的ME效应。实验结果表明，在HDC=119Oe时，FeFFFe传感器的谐振ME电压系数达到4.367V/Oe，是Feni-Face/PZT-8H/Feni-Face传感器的∼1.41倍。此外，在HAc=0.1Oe的谐振驱动条件下，∂Vme/∂Hdc在Hdc=31Oe时达到了∼22.5 mV/Oe，比已报道的Terfenol-D/Pb(Zr，Ti)O_3/Terfenol-D复合换能器的∼提高了20倍。因此，FeFPFFe传感器具有高灵敏度的交流或直流磁场传感。
A high sensitivity magnetoelectric (ME) composite sensor employing a type of ferromagnetic constant-elasticity alloy (FeNi-FACE), piezoelectric Pb(Zr,Ti)O3(PZT-8H) and high-permeability FeCuNbSiB (Fe73.5Cu1Nb3Si13.5B9) is developed. The FeCuNbSiB ribbon with the high permeability serves as the dynamic driver to increase the effective piezomagnetic coefficient d33of the FeNi-FACE. At the same time, the FeCuNbSiB/FeNi-FACE/PZT-8H/FeNi-FACE/FeCuNbSiB (FeFPFFe) composite sensor exhibits a higher effective mechanical quality factor (Qm), which is ∼7.7 times higher than that of Terfenol-D/PZT-8H/Terfenol-D (MPM) sensor. As the ME voltage at resonance is directly proportional to the product of piezomagnetic coefficient and Qm, a stronger ME effect can be achieved. The experimental results show that the resonance ME voltage coefficient (MEVC) of the FeFPFFe sensor at Hdc=119Oe achieves 4.367V/Oe, which is ∼1.41 times higher than that of FeNi-FACE/PZT-8H/FeNi-FACE (FPF) sensor. Furthermore, ∂VME/∂Hdcfor the FeFPFFe sensor achieves ∼22.5mV/Oe at Hdc=31Oe under resonant drive conditions of Hac=0.1Oe, which is ∼20 times higher than that of the previous reported Terfenol-D/Pb(Zr,Ti)O3/Terfenol-D composite transducer. Thus the FeFPFFe sensor has highly sensitive ac or dc magnetic field sensing.