| 摘要 |
FIELD: physics. ^ SUBSTANCE: proposed method proceeds from placing hard-magnetic ferromagnetic substances in solenoid with DC winding to saturate said substance. In compliance with this invention, hard-magnetic ferromagnetic is placed in AC generator magnetic field with controlled frequency and oscillation power. Said generator is coupled with oscillating circuit. Rod made from hard-magnetic ferromagnetic is placed in the generator inductor to excite the former ultrasound wave propagating along magnetisation axis. AC generator oscillation frequency f is selected to satisfy conditions of magnetic domain oscillation resonance: f=v/d, where v is ultrasound wave speed in hard-magnetic ferromagnetic substance, d is characteristic size of magnetic domain. Power of HF oscillations in magnetostrictive process is selected to provide for required mobility of magnetic domains not oriented along constant magnetic field and atomic-molecular magnetic moments in domains oriented antiparallely. ^ EFFECT: higher magnetisation, increased residual magnetisation. ^ 2 dwg |
