一种带有非晶态金属丝的磁传感器。
A magnetic sensor with amorphous wire.
作者信息
He Dongfeng, Shiwa Mitsuharu
机构信息
National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
出版信息
Sensors (Basel). 2014 Jun 17;14(6):10644-9. doi: 10.3390/s140610644.
Abstract
Using a FeCoSiB amorphous wire and a coil wrapped around it, we have developed a sensitive magnetic sensor. When a 5 mm long amorphous wire with the diameter of 0.1 mm was used, the magnetic field noise spectrum of the sensor was about 30 pT/ÖHz above 30 Hz. To show the sensitivity and the spatial resolution, the magnetic field of a thousand Japanese yen was scanned with the magnetic sensor.
摘要
我们使用一根铁钴硅硼非晶丝及其周围缠绕的线圈，开发出了一种灵敏的磁传感器。当使用一根直径为0.1毫米、长度为5毫米的非晶丝时，该传感器在30赫兹以上的磁场噪声谱约为30皮特斯拉/√赫兹。为了展示其灵敏度和空间分辨率，我们用该磁传感器对一张面值一千日元的纸币的磁场进行了扫描。
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