公开(公告)号：US20120250189A1

公开(公告)日：2012-10-04

申请号：US13074272

申请日：2011-03-29

申请人： Naomichi DEGAWA ,  Takumi Yanagisawa ,  Satoshi Miura ,  Yoshikazu Sawada ,  Takahiko Machita ,  Kenzo Makino ,  Takekazu Yamane ,  Shohei Kawasaki

发明人： Naomichi DEGAWA ,  Takumi Yanagisawa ,  Satoshi Miura ,  Yoshikazu Sawada ,  Takahiko Machita ,  Kenzo Makino ,  Takekazu Yamane ,  Shohei Kawasaki

IPC分类号： G11B5/39 ,  G11B5/60

CPC分类号： G11B5/3912 ,  G01R33/093 ,  G11B5/3909 ,  G11B2005/3996

摘要： A magnetic head that reads information of a magnetic recording medium is provided. The magnetic head according to one embodiment includes: an MR element, formed with multilayer films, of which an electrical resistance changes according to an external magnetic field; a first shield layer that is disposed on a lower side in an lamination direction of the MR element; a second shield layer that is disposed on an upper side in the lamination direction of the MR element, and that applies voltage to the MR element together with the first shield layer; and side shield layers that are disposed on both sides of the MR element in a truck width direction. The side shield layers include soft magnetic layers and hard magnetic layers magnetized in a predetermined direction.

摘要翻译： 提供读取磁记录介质的信息的磁头。 根据一个实施例的磁头包括：由多层膜形成的MR元件，其电阻根据外部磁场而改变; 第一屏蔽层，其设置在所述MR元件的层叠方向的下侧; 第二屏蔽层，其设置在所述MR元件的层叠方向的上侧，并且与所述第一屏蔽层一起向所述MR元件施加电压; 以及侧向屏蔽层，其设置在卡车宽度方向上的MR元件的两侧。 侧面屏蔽层包括在预定方向上被磁化的软磁性层和硬磁性层。