公开(公告)号：US08619389B1

公开(公告)日：2013-12-31

申请号：US13777387

申请日：2013-02-26

Applicant: TDK Corporation

Inventor： Masahiro Saito ,  Norikazu Ota ,  Masaya Kato ,  Atsushi Matsuo

IPC: G11B5/17 ,  G11B5/187

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3123 ,  G11B5/315

Abstract: A write shield includes first and second shield portions located on opposite sides of a main pole in a track width direction. A return path section includes first and second yoke portions located on opposite sides of the main pole in the track width direction. A coil surrounds at least part of the entire outer periphery of the main pole when viewed from a medium facing surface. The coil includes a first magnetic portion located in a first space between the main pole and the first yoke portion, and a second magnetic portion located in a second space between the main pole and the second yoke portion. The first and second magnetic portions are made of a magnetic conductive material.

Abstract translation: 写屏蔽包括位于主磁极在磁道宽度方向的相对侧上的第一和第二屏蔽部分。 返回路径部分包括在轨道宽度方向上位于主极的相对侧上的第一和第二轭部分。 当从面向介质的表面观察时，线圈围绕主极的整个外周的至少一部分。 线圈包括位于主极和第一磁轭部之间的第一空间中的第一磁性部分和位于主极和第二磁轭部分之间的第二空间中的第二磁性部分。 第一和第二磁性部分由导电材料制成。

公开(公告)号：US08817417B2

公开(公告)日：2014-08-26

申请号：US13727341

申请日：2012-12-26

Applicant: TDK Corporation

Inventor： Hideyuki Ukita ,  Kenta Hara ,  Kenkichi Anagawa ,  Yosuke Antoku ,  Masashi Sano ,  Shuji Okame ,  Masaya Kato

IPC: G11B5/245 ,  G11B5/39 ,  G11B5/235

CPC classification number: G11B5/1278 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/315

Abstract: A trailing shield is provided on a trailing side of a magnetic pole with a non-magnetic gap layer in between, and an intermediate layer having negative uniaxial magnetocrystalline anisotropy is provided between the non-magnetic gap layer and the trailing shield. The intermediate layer has a magnetic property in which an easy axis of magnetization is provided in an in-plane direction and thus magnetization is likely to occur in that direction, whereas a difficult axis of magnetization is provided in a direction intersecting the in-plane direction and thus magnetization is less likely to occur in that direction. Accordingly, magnetic flux becomes difficult to excessively flow from the magnetic pole into the trailing shield.

Abstract translation: 尾部屏蔽设置在磁极的后侧，其间具有非磁隙层，并且在非磁隙层和后屏蔽之间设置具有负单轴结晶各向异性的中间层。 中间层具有磁特性，其中容易的磁化轴在面内方向上提供，因此可能在该方向上发生磁化，而在与面内方向交叉的方向上提供难度的磁化轴 因此磁化不太可能在该方向上发生。 因此，磁通变得难以从磁极过渡到后挡板。