Thoughts on Incremental Permeability

After a short discussion of the factors which influence the incremental permeability, three different methods are discussed which should give a large change in incremental permeability with a change of the biasing field. The first requires a grain-oriented magnetic tape and take advantage of demagnetizing fields. The second requires a material with a square B-H loop, a low coercive force, and a large maximum permeability. The third requires a material with low crystalline anisotropy. Finally some currently available materials are suggested