公开(公告)号：US08064164B2

公开(公告)日：2011-11-22

申请号：US12124217

申请日：2008-05-21

申请人： Tomohiro Yamashita ,  Hiroshi Kameda ,  Katsuhiko Otomo

发明人： Tomohiro Yamashita ,  Hiroshi Kameda ,  Katsuhiko Otomo

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3123 ,  G11B5/3133

摘要： In a perpendicular magnetic recording head comprising a main magnetic pole layer and a return yoke layer which have respective front end faces exposed at a surface opposing a recording medium and are laminated with a nonmagnetic material layer interposed therebetween on the medium-opposing surface, an end magnetization control layer for generating an exchange-coupling field is provided on the upper or lower side of both end parts in a track width direction of the return yoke layer. The exchange-coupling field fixes magnetization in the end parts to the track width direction.

摘要翻译： 在包括主磁极层和返回磁轭层的垂直磁记录头中，其具有在与记录介质相对的表面处暴露的相应的前端面，并且在介质相对表面上层叠有非磁性材料层， 用于产生交换耦合场的磁化控制层设置在返回磁轭层的轨道宽度方向上的两个端部的上侧或下侧。 交换耦合场将端部中的磁化固定到轨道宽度方向。

公开(公告)号：US07212382B2

公开(公告)日：2007-05-01

申请号：US10852749

申请日：2004-05-24

申请人： Katsuhiko Otomo

发明人： Katsuhiko Otomo

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/3113 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/3967

摘要： A magnetic head includes a metallic material layer between a lower core layer and an upper shield layer. This metallic material layer extends to the rear of the magnetic head in the height direction to overlap with a first metal layer. The metallic material layer can therefore efficiently dissipate joule heat generated from a write head section to the outside of the magnetic head through the first metal layer. In addition, the metallic material layer can block a fluctuating magnetic field generated from the write head section. Thus, this magnetic head can reduce variations in the magnetic domain structures of upper and lower shield layers to stabilize the read output of a read head section.

摘要翻译： 磁头包括在下芯层和上屏蔽层之间的金属材料层。 该金属材料层在高度方向上延伸到磁头的后部以与第一金属层重叠。 因此，金属材料层可以通过第一金属层有效地将从写入头部产生的焦耳热消散到磁头的外部。 此外，金属材料层可以阻挡从写入头部产生的波动的磁场。 因此，该磁头可以减小上屏蔽层和下屏蔽层的磁畴结构的变化，以稳定读头部分的读取输出。