As noted above, theta is not the only variable available for use in the magnetization definition.
Another possibility is the definition of aHalbach Array magnetization pattern. Usually, Halbach
arrays are built out of a set of rectangular magnets, each with a constant magnetization
direction. However, the same idea (a magnetization scheme that concentrates the flux on one
side of the array) with a continuous magnetization pattern. To create a Halbach magnetization
pattern, define the magnetization direction to be 180*x/PolePitchwhere a number should be
inserted for PolePitch. In the example file, the pole pitch is 1", so the magnetization direction
is defined as180*x. The solution for the example problem is shown below in Figure 4. All flux is
external to the magnet is concentrated on the top side of the array