Title :
Magnetic aftereffect in rare earth-iron-boron magnets
Author :
Shi, J. ; Yamada, O. ; Maruyama, H. ; Sagawa, M. ; Hirosawa, S.
Author_Institution :
Okayama University, Okayama
fDate :
9/1/1987 12:00:00 AM
Abstract :
The temperature dependences of the aftereffect coefficient Sv and the coercive force iHc have been measured from 4.2K to 300K on two specimens prepared from sintered magnets of Pr8Y7Fe77B8(sintered at 1060°C and 1100°C). The latter has higher maximum energy products. The Sv values of both have a maximum at 60K and 150K respectively. This is a new behavior which can not be explained by any theory proposed until now.
Keywords :
Magnetic thermal factors; Permanent magnets; Rare-earth materials/devices; Coercive force; Eddy currents; Fluctuations; Iron; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetization; Superconducting magnets; Thermal force;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1987.1065452
