摘要:
A method and apparatus having magnetic properties. The apparatus includes a main pole and a return pole spaced apart from the main pole. The return includes at least one multilayer block having a plurality of alternating layers of magnetic material and non-magnetic material. The return pole also includes a single magnetic material layer coupled to the at least one multilayer block. The magnetic material layer has a permeability that is greater than a permeability of the at least one multilayer block.