Title :
Magnetoelastic amorphous metal fluxgate magnetometer
Author :
Mermelstein, M.D.
Author_Institution :
Geo-Centers, Inc., Newton Center, USA
Abstract :
A fluxgate magnetometer is presented which exploits the magnetic field dependence to the stress-driven magnetisation fluctuations in magnetostrictive metallic glass ribbons. A magnetometer constructed with an unannealed ribbon, a piezoelectric ceramic driving element and a 100-turn pick-up coil exhibits a minimum detectable magnetic field of 15 nT/¿Hz in the DC to 1 Hz bandwidth.
Keywords :
magnetic field measurement; magnetoelastic effects; magnetometers; fluxgate magnetometer; magnetic field dependence; magnetostrictive metallic glass ribbons; minimum detectable magnetic field; pick-up coil; piezoelectric ceramic driving element; stress-driven magnetisation fluctuations;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860358
