کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
736928 | 893898 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Giant magnetic induction in magneto-elastic resonators and its application for magnetic field sensors Giant magnetic induction in magneto-elastic resonators and its application for magnetic field sensors](/preview/png/736928.png)
The competitive performance of an optimized magneto-elastic resonator as sensor of a local magnetic field is reported. The resonator core is constituted by an amorphous ferromagnetic ribbon in which stationary waves are established by means of magneto-elastic coupling. The appropriate choice of the ribbon composition and the use of a special heat treatment are determinant on the sensor response. In proper conditions, the sensitive parameter, namely the electromotive force (root mean square value) induced in a miniaturized pick-up coil, has relative changes of 104 for a magnetic field increment of 10 A/m. Magnetic induction fields as small as 10−8 T can be measured with a technology simpler than in other used devices. A good linearity of the sensor response at low field (from 0 A/m up to 50 A/m) is demonstrated too.
Journal: Sensors and Actuators A: Physical - Volume 153, Issue 2, 3 August 2009, Pages 162–165