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Effect of damping on the time variation of fields produced by a small pole tip with a soft under layer

By K.Z. Gao, R.W. Chantrell and E.D. Boerner


The time variation of magnetostatic fields generated by space and time varying magnetization configurations in small perpendicular pole tips is studied. The magnetization configurations are a response to external fields driving the pole tip and soft under layer (SUL). When the system damping is sufficiently small the magnetization excitations persist for a long time after reversal. The effects of damping parameter, position in the media, and discretization cell size on the magnitude of the time varying magnetostatic fields will be given. Decreasing the damping parameter increases the magnitude of the magnetostatic field variation

Year: 2004
DOI identifier: 10.1109/TMAG.2004.832238
OAI identifier:

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