Geomagnetic sensor based on giant magnetoelectric effect
2007; American Institute of Physics; Volume: 91; Issue: 12 Linguagem: Inglês
10.1063/1.2789391
ISSN1520-8842
AutoresJunyi Zhai, Shuxiang Dong, Zengping Xing, Jiefang Li, D. Viehland,
Tópico(s)Soil Moisture and Remote Sensing
ResumoHere, the authors report a new type of geomagnetic field sensor based on the giant magnetoelectric effect in Metglas/piezoelectric-fiber laminates that are wrapped with a coil. These sensors can measure quite precisely the value of both the Earth’s magnetic field and its inclination. The geomagnetic field sensor does not require a dc magnetic bias and is driven by a 10mA ac. Highly sensitive dc magnetic field variations of less than 10−9T and angular inclinations of ⩽10−5deg can be detected, potentially offering opportunities for a small global positioning device.
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