Title :
Extraction magnetometry in an AC susceptometer
Author_Institution :
Lake Shore Cryotronics Inc., Westerville, OH, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
A variable temperature, two-coil, two-position AC susceptometer has been used to perform absolute DC moment measurements using an extraction measurement technique. Virtually no hardware modifications were required and the full AC measurement capability is maintained. The signal analysis for the moment measurement is done using a high-speed digital voltmeter. The system can be configured to yield high-resolution DC moment measurements to 25 ppm and sensitivities to better than 5×10-5 emu. Typical DC measurement results are shown
Keywords :
calibration; magnetic susceptibility; magnetic variables measurement; magnetometers; AC measurement capability; AC susceptometer; absolute DC moment measurements; extraction measurement technique; high-speed digital voltmeter; signal analysis; two position type; two-coil type; variable temperature; Coils; Hardware; Magnetic field measurement; Magnetic flux; Magnetic materials; Magnetic susceptibility; Performance evaluation; Temperature; Voltmeters; Wounds;
Journal_Title :
Magnetics, IEEE Transactions on
