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发明申请
US20060098336A1 Perpendicular recording head having controlled permeability and saturation moment 失效
具有可控渗透率和饱和力矩的垂直记录头

Perpendicular recording head having controlled permeability and saturation moment
摘要：
A method and apparatus having magnetic properties. The apparatus includes a main pole and a return pole spaced apart from the main pole. The return includes at least one multilayer block having a plurality of alternating layers of magnetic material and non-magnetic material. The return pole also includes a single magnetic material layer coupled to the at least one multilayer block. The magnetic material layer has a permeability that is greater than a permeability of the at least one multilayer block.
摘要（中）：

具有磁性的方法和装置。 该装置包括与主极间隔开的主极和返回杆。 返回包括至少一个具有多个交替层的磁性材料和非磁性材料的多层块。 返回极还包括联接到至少一个多层块的单个磁性材料层。 磁性材料层的磁导率大于至少一个多层块的磁导率。

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