IEEE Transactions on Magnetics · 1981 · 22 citations · 3 references
Natural SciencesMaterials EngineeringMaterials ScienceElectromagnetismMagnetic MaterialsThin FilmsMagnetic CharacterizationMagnetic Recording MaterialsMagnetic Thin FilmsMagnetization ProcessesSuperconducting Thin FilmsThin Film Magnetic PropertiesDouble-layer EffectsMagnetic RecordingMagnetic Recording MediaPerpendicular Magnetic RecordingPerpendicular Magnetic Recording MediaThin Film Recording Media
Perpendicular magnetic recording performance for double-layer (Co-Cr,Ni-Fe) media was analyzed, with a simple magnetization model, in comparison with single-layer media. The calculated output voltage from a ring-shaped reproducing head shows good agreement with experimental data. It is shown theoretically and empirically that the Co-Cr layer thickness can be reduced without sacrificing the output amplitude, if the Ni-Fe layer is placed underneath it to perform as a "flux sink" to extinguish the rear surface charge on the Co-Cr layer.
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