Title :
Measurement accuracy of a pulsed field magnetometer designed for rare earth based permanent magnets
Author :
Song, Min-Seok ; Kim, Yoon-bae ; Kim, Chang-Suk ; Kim, Taik-Kee
Author_Institution :
Korea Res. Inst. of Stand. & Sci., South Korea
fDate :
9/1/2000 12:00:00 AM
Abstract :
A pulsed field magnetometer with maximum field of 120 kOe has been constructed. The pulsed field generated by a 18 kJ capacitor bank system combined with a pulsed coil was oscillation damped with a period of 10.12 ms. The specimen space was designed to heat up to 200°C by flowing hot N2 gas. Magnetic hysteresis curve was measured by induction method during 10.12 ms of a pulsed duration from the first positive to the second positive peak. The accuracy of PFM is 2% within the space of ±2 mm×8 mm at the center of the J-coil
Keywords :
magnetic field measurement; magnetic hysteresis; magnetometers; permanent magnets; 18 kJ; 200 C; J-coil; capacitor bank system; damped oscillation; hysteresis loops; induction method; magnetic hysteresis curve; measurement accuracy; pulsed coil; pulsed field magnetometer; rare earth based permanent magnets; temperature control; Displacement measurement; Iron; Length measurement; Magnetic field measurement; Magnetic hysteresis; Magnetometers; Permanent magnets; Pulse generation; Pulse measurements; Space heating;
Journal_Title :
Magnetics, IEEE Transactions on
