Patent ID: 7456030
Filing Date: 2008-11-25
Classification: H01F,H01L

Abstract:
1. A method of forming a magnetic structure, the method comprising: forming a dielectric mold layer on an underlying substrate; forming a low resistance seed layer on the mold layer; forming a hard mask layer on the low resistance seed layer; forming a patterned dielectric mask layer on the hard mask layer to expose an upper surface region of the hard mask layer; utilizing the patterned dielectric mask layer to etch the exposed upper surface region of the hard mask layer and the underlying low resistance seed layer to expose an upper surface region of the mold layer; etching expose upper surface region of the mold layer to define at least one mold layer trench having a bottom surface and sidewall surfaces and exposed portions of the low resistance seed layer and the hard mask layer; forming a conformal high resistance seed layer over the bottom and sidewall surfaces of the mold layer trench and over the exposed portions of the low resistance seed layer and the hard mask layer such that the high resistance seed layer is in electrical contact with the low resistance seed layer; utilizing the low resistance seed layer and the high resistance seed layer to electroplate magnetic material in the mold layer trench.