Systems and methods for integrated multi-layer magnetic films
Abstract:
Integrated multi-layer magnetic films for use in passive devices in microelectronic applications and methods of manufacture thereof. Soft ferromagnetic materials exhibiting high permeability and low coercivity are laminated together with insulating layers interposed. Electrical conductors coupled to interconnects are magnetically coupled to magnetic film layers to engender an inductor (self and mutual). Soft ferromagnetic materials are provided in an alternating array of parallel plate capacitors. Each alternating magnetic film is electrically coupled to either a primary or secondary electrical conductor interconnects and separated by an electrically insulating dielectric material. Alternatively, each alternating magnetic layer comprises an induced anisotropy material, which can also be combined with coiled conductor giving rise to a hybrid inductive/capacitive device. Also, soft ferromagnetic material are also selected and tuned to provide for FMR notch filtering.
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