The Halbach array was created by Klaus Halbach for particle accelerator applications. The Halbach
array is a special formation of magnets used to guide the magnetic fields to create a strong
sinusoidal magnetic field below the array while nearly cancelling the magnetic fields above the array. A
standard, simple method to create a Halbach array is to place magnets oriented 90 degrees to each other.
Figure 1 illustrates a five magnet Halbach array with a wavelenght of four magnets. The sinusoidal
magnetic field below the array is illustrated as well.