公开(公告)号：US09082432B1

公开(公告)日：2015-07-14

申请号：US14467231

申请日：2014-08-25

Applicant: TDK Corporation

Inventor： Yuji Matsuura ,  Atsushi Yamaguchi ,  Michitaka Nishiyama ,  Yumiko Yokoyama ,  Yuki Nishimura ,  Ittetsu Kitajima

IPC: G11B5/31 ,  G11B5/127

CPC classification number: G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/3163

Abstract: A thin film magnetic head has a main magnetic pole layer; a first trailing shield that is positioned at the trailing side of the main magnetic pole layer, and that is close to the main magnetic pole layer; and a second trailing shield that is positioned at the trailing side of the first trailing shield, and that continues to the first trailing shield. An end surface of the second trailing shield positioned at the back side in the height direction has a first end side positioned at a medium opposing surface side, and a second end side positioned at the further back side in the height direction than the first end side, and at the trailing side closer than the first end side. An angle formed by a plane including the first end side and the second end side and a plane parallel to both the height direction and the track width direction is 30 degrees to 60 degrees.

Abstract translation: 薄膜磁头具有主磁极层; 位于主磁极层的后侧并且靠近主磁极层的第一尾部屏蔽件; 以及位于所述第一后挡板的后侧并且继续到所述第一后挡板的第二后挡板。 位于高度方向后侧的第二后挡板的端面具有位于介质相对表面侧的第一端侧和位于高度方向上比第一端侧更靠后侧的第二端侧 ，并且在比第一端侧更靠近的后侧。 由包括第一端侧和第二端侧的平面和平行于高度方向和轨道宽度方向的平面形成的角度为30度至60度。

公开(公告)号：US09704511B2

公开(公告)日：2017-07-11

申请号：US14539081

申请日：2014-11-12

Applicant: TDK CORPORATION

Inventor： Hideyuki Ukita ,  Kenkichi Anagawa ,  Kei Hirata ,  Atsushi Yamaguchi ,  Ittetsu Kitajima

IPC: G11B5/127 ,  G11B5/31

CPC classification number: G11B5/1278 ,  G11B5/1276 ,  G11B5/3116 ,  G11B5/3143 ,  G11B5/315

Abstract: The perpendicular magnetic recording head includes a magnetic pole including a first region and a second region, the first region having a first specific resistance and an end surface exposed on an air bearing surface, the second region having a second specific resistance higher than the first specific resistance and being located at a position recessed from the air bearing surface.