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1. 发明授权

US07804666B2 Composite shield structure of PMR writer for high track density 有权
标题翻译：用于高轨道密度的PMR写入器的复合屏蔽结构
公开(公告)号：US07804666B2
公开(公告)日：2010-09-28
申请号：US11787016
申请日：2007-04-13
申请人： Lijie Guan , Morris Dovek , Joe Smyth , Yoshitaka Sasaki
发明人： Lijie Guan , Morris Dovek , Joe Smyth , Yoshitaka Sasaki
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/315
摘要： Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.
摘要翻译：通过在PMR写入器中并入复合屏蔽结构来实现改进的可编写性和相邻轨迹擦除的实质性减少。在写极的上表面之上形成一定距离的后屏蔽，在写极的底表面下方形成一定距离的前屏蔽，以及形成在写柱的每一侧上的部分的局部侧屏蔽。部分侧屏蔽厚度小于写入极的厚度。每个局部侧屏蔽部分具有平行于最近的写入极侧的一侧和从写入磁极顶部表面偏移0至0.15微米的顶部表面。采用两个或更多个屏蔽元件之间的多个磁连接来确保正确的磁势。大写字杆的喇叭角为45度至75度。

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