Thin-film processing electromagnet for low-skew magnetic orientation
An electromagnet having one or more coils wrapped around a plate-shaped core produces a uniaxial magnetic filed in the vicinity of a substrate surface for orienting a magnetic film deposited onto the substrate surface. Variations in the magnetic mass of the plate-shaped core or in the magnetic perme...
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| creator | SHIYUAN CHENG MEHRDAD M MOSLEHI CECIL J DAVIS XIANGQUN CHEN |
| description | An electromagnet having one or more coils wrapped around a plate-shaped core produces a uniaxial magnetic filed in the vicinity of a substrate surface for orienting a magnetic film deposited onto the substrate surface. Variations in the magnetic mass of the plate-shaped core or in the magnetic permeability of the core mass are made to reduce angular skew and to improve uniformity of the uniaxial magnetic field. The variations generally involve a reduction in magnetic mass or permeability near a center of the core with respect to a periphery of the core. Cavities of various sizes and shapes but having symmetry with a magnetic axis can be formed in the core for this purpose. |
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Variations in the magnetic mass of the plate-shaped core or in the magnetic permeability of the core mass are made to reduce angular skew and to improve uniformity of the uniaxial magnetic field. The variations generally involve a reduction in magnetic mass or permeability near a center of the core with respect to a periphery of the core. 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| subjects | BASIC ELECTRIC ELEMENTS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRICITY INDUCTANCES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAGNETS METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSFORMERS |
| title | Thin-film processing electromagnet for low-skew magnetic orientation |
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