公开(公告)号：US20150249205A1

公开(公告)日：2015-09-03

申请号：US14630121

申请日：2015-02-24

Applicant: TDK CORPORATION

Inventor： Takahiro SUWA ,  Katsuyuki NAKADA ,  Takumi AOKI ,  Tomoyuki SASAKI ,  Tetsuya SHIBATA

IPC: H01L43/02 ,  H01L43/08

CPC classification number: H01L43/08 ,  H03B15/006

Abstract: A higher oscillation output is realized in a magnetic element utilizing high frequency characteristics of a magnetoresistive effect element. A magnetic element 1 includes a magnetoresistive effect film 10 including a magnetic pinned layer 14 and a magnetic free layer 12 with a non-magnetic spacer layer 13 interposed therebetween, and a pair of electrodes (lower electrode layer 11 and upper electrode layer 15) arranged with the magnetoresistive effect film 10 interposed therebetween in a stacking direction of the magnetoresistive effect film 10, wherein, given that a minimum value of an area of the magnetic free layer 12 in a section perpendicular to the stacking direction is denoted by Sf, and that a minimum value of an area of the magnetic pinned layer 14 in a section perpendicular to the stacking direction is denoted by Spm, relation of Sf>Spm is satisfied.

Abstract translation: 在利用磁阻效应元件的高频特性的磁性元件中实现更高的振荡输出。 磁性元件1包括磁阻效应膜10，其包括磁性被钉扎层14和介于其间的非磁性间隔层13的磁性自由层12以及一对电极（下电极层11和上电极层15） 其中磁阻效应膜10在磁阻效应膜10的层叠方向插入其间，其中，假定在与层叠方向垂直的截面中的无磁性层12的面积的最小值由Sf表示，并且 磁性被钉扎层14的垂直于层叠方向的部分的面积的最小值由Spm表示，满足Sf> Spm的关系。

公开(公告)号：US20150228394A1

公开(公告)日：2015-08-13

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: H01F27/245

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。