The Halbach Array is entirely composed of rare earth permanent magnet materials. By arranging the permanent magnets with different magnetization directions according to a certain rule, the magnetic field lines can be concentrated on one side of the magnet, and the magnetic field lines can be weakened on the other side, thereby obtaining an ideal unilateral magnetic field. This is of great significance in engineering. With excellent magnetic field distribution characteristics, Halbach Arrays are widely used in industrial fields such as nuclear magnetic resonance, magnetic levitation, and permanent magnet motors.