Write field analysis in perpendicular recording using three-dimensional micromagnetic simulation
Write field analysis in perpendicular recording using three-dimensional micromagnetic simulation
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DOI：
10.1063/1.1447485
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发表时间：
2002-05
影响因子：
3.2
通讯作者：
K. Gao;H. Bertram
中科院分区：
文献类型：
--
作者：
K. Gao;H. Bertram
开发了三维微磁垂直记录模型来研究磁特性和磁头几何形状对写入磁头场的影响。对于200 Gbit/in.2的参数特征，最大写入字段约为0.73 Bs。该场的百分之三十是由于琴颈饱和造成的。计算出的轨道中心磁头场梯度与理论 Westmijze 场非常吻合。对于厚度大于磁道宽度的情况，最大写入场与 SUL 厚度无关。当 SUL 厚度为磁道宽度的一半时，磁场减小 10%，然后迅速减小。
A three-dimensional micromagnetic perpendicular recording model is developed to study the effect of magnetic properties and head geometry on the write head field. For parameters characteristic of 200 Gbit/in.2, the maximum write field is about 0.73 Bs. Thirty percent of this field is due to neck saturation. Calculated head field gradients at track center agree well with the theoretical Westmijze field. The maximum write field is independent of the SUL thickness for thicknesses greater than the track width. At an SUL thickness of half the track width, the field decreases by 10%, and thereafter decreases rapidly.