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首页> 外文期刊>IEEE Transactions on Magnetics >Readback Spatial Sensitivity Function by Reciprocity Principle and Media Readback Flux
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Readback Spatial Sensitivity Function by Reciprocity Principle and Media Readback Flux

机译：基于互易原理和媒体回读通量的回读空间敏感性函数

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摘要

The sensitivity function is studied by using conventional reciprocity principle, and it is compared with the readback model's one, which is calculated as the read sensor output excited by the media recorded magnetization. These models are constructed by finite elements with finite permeability in a detailed three dimensional geometry. It is found that the sensitivity function of the reciprocity is different from one of the readback model, although it is believed that the sensitivity function should be equal to the read head field distribution. It is caused by the three dimensional structure, complicated media flux gathering of the sensor, and the media top and bottom magnetic charge effect. In addition to the sensitivity function difference, the reciprocity procedure is lack of sense of the media grain information, vector magnetization, and multilayered structure in the reproducing process. On the other hand, the developed readback model takes these features into account automatically.
机译：通过使用传统的互易原理研究灵敏度函数，并将其与回读模型的灵敏度函数进行比较，该回读模型的计算方法是由介质记录的磁化强度激发的读传感器输出。这些模型由详细的三维几何形状中具有有限渗透率的有限元构成。尽管认为灵敏度函数应该等于读取头场分布，但是发现互易的灵敏度函数不同于回读模型之一。这是由于三维结构，传感器的复杂磁通量收集以及介质顶部和底部磁电荷效应引起的。除了灵敏度函数的差异外，互易过程还缺乏再现过程中对媒体颗粒信息，矢量磁化和多层结构的理解。另一方面，开发的回读模型会自动考虑这些功能。

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