Transition width limit in magnetic recording

Xiaobin Wang; Valcu, Bogdan; Nan-Hsiung Yeh
May 2009
Applied Physics Letters;5/18/2009, Vol. 94 Issue 20, p202508
Academic Journal
The minimum magnetization transition width between information bits determines achievable recording linear density. The ultimate limit of this width is determined by the continuous media granular structure. The dependence of the transition width limit on grain size mean and standard deviation are given without an a priori assumption of magnetization transition shape. A simplified approach to combine finite grain size and magnetic field gradient for transition width is discussed.


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