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

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3637

Lastpage

3639

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908925

Filename

908925