公开(公告)号：US09362038B2

公开(公告)日：2016-06-07

申请号：US14613852

申请日：2015-02-04

Applicant: TDK CORPORATION

Inventor： Katsuyuki Nakada ,  Takahiro Suwa ,  Kuniyasu Ito ,  Takumi Aoki ,  Tetsuya Shibata

IPC: G11B5/127 ,  H01F10/32 ,  H01F3/10 ,  H01F7/20 ,  H01L43/08 ,  G11C11/16

CPC classification number: H01F10/3268 ,  G11B5/127 ,  G11C11/161 ,  H01F3/10 ,  H01F7/20 ,  H01L43/08

Abstract: A magnetic element including a magnetoresistive effect film (MEF). Magnetic element includes an MEF and nonmagnetic spacer layer, first and second ferromagnetic layers, wherein layers being disposed with nonmagnetic spacer layer interposed therebetween, pair of electrodes disposed with MEF interposed therebetween in stacking direction of MEF at least two first soft magnetic layers, coil, and second soft magnetic layer magnetically connected to coil, wherein second soft magnetic layer has ring-like shape, spacing distance between second soft magnetic layer and MEF is larger than first soft magnetic layer and MEF, film thickness of second soft magnetic layer is larger than first soft magnetic layer, part of the two first soft magnetic layers overlaps a part of second soft magnetic layer in stacking direction of MEF, first and second soft magnetic layers are magnetically coupled to each other, and MEF is disposed between respective fore ends of two first soft magnetic layers.

Abstract translation: 包括磁阻效应膜（MEF）的磁性元件。 磁性元件包括MEF和非磁性间隔层，第一和第二铁磁层，其中设置有介于其间的非磁性间隔层的层间设置有MEF的一对电极，MEF的堆叠方向在MEF的堆叠方向上至少两个第一软磁性层，线圈， 和第二软磁层磁性地连接到线圈，其中第二软磁层具有环形形状，第二软磁层与MEF之间的间隔距离大于第一软磁层和MEF，第二软磁层的膜厚度大于 第一软磁层，两个第一软磁层的一部分在MEF的堆叠方向上与第二软磁层的一部分重叠，第一和第二软磁层彼此磁耦合，并且MEF设置在两个的相应前端之间 第一软磁层。