Title :
Magnetostrictive metallic glass ribbon gradiometer
Author :
Mermelstein, M.D. ; Dandridge, A.
Author_Institution :
Naval Res. Lab., Washington, DC
fDate :
7/7/1988 12:00:00 AM
Abstract :
A new magnetic field gradiometer has been demonstrated which exhibits a minimum detectable field gradient of 7.7 pT/cm√(Hz) at 1.0 Hz. The sensor element utilises a single metallic glass ribbon thereby enhancing common-mode rejection of noise and providing a compact probe. Balancing is currently achieved by adjusting the individual amplifier gains. However, configuring the pick-up coils in series opposition in a sensor exhibiting an improved uniformity of response may obviate the need for this additional signal processing
Keywords :
electric sensing devices; magnetic field measurement; magnetometers; magnetostrictive devices; amorphous type; compact probe; magnetic field gradiometer; metallic glass ribbon; pick-up coils; piezoelectric plate; sensor element; series opposition; stress driven magnetoelastic type;
Journal_Title :
Electronics Letters
