Enhancement of the Magnetic Fluxin Metglas/PZT-Magnetoelectric Integrated 2D Geomagnetic Device 
   

Experimental investigations of the magnetization, magnetostriction and magnetoelectric (ME) effects were per-formed on sandwich - type Metglas/PZT/Metglas laminate composites. The results have been analyzed by tak-ing into account the demagnetization contribution. The study has pointed out that the magnetic flux concentration is strongly improved in piezomagnetic laminates with a narrower width leading to a significant enhancement of the ME effects. The piezomagnetic laminates with the optimal area dimension were integrated to form a 2-D geomagnetic device, which simultaneously can precisely detect the strength as well as inclination of the earth’s magnetic field. In this case, a magnetic field resolution of better than 10 −4 Oe and an angle preci-sion of ± 0.1 o were determined. This simple and low-cost geomagnetic-field device is promising for various applications.


http://repository.vnu.edu.vn/handle/VNU_123/25802