Abstract
The magnetic field and temperature dependences of the magnetic aftereffect constant Sv were measured for Nd-Fe-B sintered magnet on a J-H demagnetizing curve in the practical temperature range for a permanent magnet between 293 and 400 K. Sv is constant and independent of the magnetic field in the range from the point near (BH)max to the demagnetizing field whose magnetization J was -0.7 T. Sv decreased linearly as temperature increased. The value of Sv and temperatre dependence of Sv for Nd-Fe-B sintered magnet were considerably larger than those of Sm2Co17 sintered magnet.
