The authors present an analytical approach to the design of permanent magnet structures producing confined homogeneous magnetic fields. The method applies particularly to the 2-D type of devices proposed by K. Halbach (1980), and has the advantage of being suited to cases in which the permanent magnet material has relative permeability μ≠1 or is anisotropic. With this approach, it becomes possible to compensate the inhomogenizing effect of permeability already evident in the dimensioning phase, which greatly enhances the possibility of generating extremely homogeneous fields
Published in:
Magnetics, IEEE Transactions on
(Volume:25
,
Issue:
5
)
Date of Publication: Sep 1989