MAGNETIC FIELD APPLICATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To obtain a magnetic field application apparatus which can facilitate movement of a magnetic material in a stationary magnetic field by reducing the influences of electromagnetic force, when the material is moved in the magnetic field. SOLUTION: This apparatus includes a stationary magnetic field generating part 4 for generating a stationary magnetic field, having a magnetic gradient and a movement mechanism 5 for moving a magnetic material 2 into and out of the magnetic field generation part 4 through the magnetic gradient. The magnetic field generating part 4 has a main coil 6 for generating a main magnetic field, a sub-coil 7 positioned coaxially with the main coil 6 for generating a relaxing magnetic field, in the same direction as that of the main magnetic field to relax the magnetic gradient.