公开(公告)号：US20140177104A1

公开(公告)日：2014-06-26

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: G11B5/39

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。