Accurate approximation of fields and spectral response functions for perpendicular recording heads
Accurate approximation of fields and spectral response functions for perpendicular recording heads
复制标题
垂直记录头的场和光谱响应函数的精确近似
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
D. Mapps
中科院分区：
文献类型：
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作者：
D. Wilton;H. Shute;D. Mapps
在简单的边界条件的矩形区域的磁势的解决方案被用来近似的记录头的磁头面平面中的二维电位。这种近似方法可以应用于具有矩形拐角的任何记录头，在存在衬层的情况下。槽近似证明环形磁头和屏蔽（磁阻）极头。四分之一平面近似的应用程序，有限长的头。场分量和谱响应函数的估计来自近似势。简单的槽近似至少是准确的其他，往往更复杂，近似的方法。最重要的是，无论是槽和四分之一平面的近似是很容易应用，不需要事先知道的头部领域的特定的几何形状正在考虑。
Solutions for the magnetic potential in rectangular regions with simple boundary conditions are used to approximate the two-dimensional potential in the head face plane of a recording head. This method of approximation can be applied to any recording head with rectangular corners, in the presence of an underlayer. The slot approximation is demonstrated for ring heads and shielded (magnetoresistive) pole heads. The quarter plane approximation is given for application to finite-length heads. Estimates of the field components and the spectral response function are derived from the approximate potential. The simple slot approximation is shown to be at least as accurate as other, often more complicated, methods of approximation. Most significantly, both the slot and the quarter-plane approximations are easy to apply and need no prior knowledge of the head field of the particular geometry under consideration.