公开(公告)号：US20120262821A1

公开(公告)日：2012-10-18

申请号：US13296004

申请日：2011-11-14

申请人： Tomoko Taguchi ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kenichiro Yamada ,  Hitoshi Iwasaki

发明人： Tomoko Taguchi ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kenichiro Yamada ,  Hitoshi Iwasaki

IPC分类号： G11B5/23 ,  G11B17/02 ,  G11B5/48

CPC分类号： G11B5/314 ,  G11B5/235 ,  G11B2005/0024

摘要： According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field perpendicular to a recording medium, a trailing-shield pole opposed to the main pole with a recording gap therebetween, a high-frequency oscillator between the main pole and the trailing-shield pole in the recording gap, configured to produce a high-frequency magnetic field, a magnetic seed layer between the main pole and the high-frequency oscillator and in contact with the main pole, and a highly oriented magnetic layer of a soft magnetic material superposed on the magnetic seed layer between the main pole and the high-frequency oscillator and in contact with the high-frequency oscillator.

摘要翻译： 根据一个实施例，磁记录头包括被配置为施加垂直于记录介质的记录磁场的主极，与主极相对的后屏蔽极，其间具有记录间隙，在主体之间的高频振荡器 磁极和后屏蔽极在记录间隙中，被配置为产生高频磁场，主极和高频振荡器之间的磁性种子​​层，并与主极接触，并且高取向磁性层 叠置在主极与高频振荡器之间的磁性种子​​层上并与高频振荡器接触的软磁性材料。

公开(公告)号：US08687321B2

公开(公告)日：2014-04-01

申请号：US12382940

申请日：2009-03-26

申请人： Kenichiro Yamada ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Tomomi Funayama

发明人： Kenichiro Yamada ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Tomomi Funayama

IPC分类号： G11B5/60

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/3146 ,  G11B2005/0005 ,  G11B2005/0024 ,  H03B15/006

摘要： A magnetic head assembly includes: a magnetic recording head, a head slider, a suspension and an actuator arm. The magnetic recording head includes a spin torque oscillator and a main magnetic pole. The spin torque oscillator includes, a first magnetic layer including at least one selected from the group consisting of a Fe—Co—Al alloy, a Fe—Co—Si alloy, a Fe—Co—Ge alloy, a Fe—Co—Mn alloy a Fe—Co—Cr alloy and a Fe—Co—B alloy, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The main magnetic pole is placed together with the spin torque oscillator. The magnetic recording head is mounted on the head slider. The head slider is mounted on one end of the suspension. The actuator arm is connected to other end of the suspension.

摘要翻译： 磁头组件包括：磁记录头，磁头滑块，悬架和致动器臂。 磁记录头包括自旋扭矩振荡器和主磁极。 自旋转矩振荡器包括：第一磁性层，其包括选自由Fe-Co-Al合金，Fe-Co-Si合金，Fe-Co-Ge合金，Fe-Co-Mn 合金Fe-Co-Cr合金和Fe-Co-B合金，第二磁性层和设置在第一磁性层和第二磁性层之间的中间层。 主磁极与自旋扭矩振荡器一起放置。 磁记录头安装在磁头滑块上。 磁头滑块安装在悬架的一端。 执行器臂连接到悬架的另一端。

公开(公告)号：US20090316303A1

公开(公告)日：2009-12-24

申请号：US12382940

申请日：2009-03-26

申请人： Kenichiro Yamada ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Tomomi Funayama

发明人： Kenichiro Yamada ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Tomomi Funayama

IPC分类号： G11B5/60

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/3146 ,  G11B2005/0005 ,  G11B2005/0024 ,  H03B15/006

摘要： A magnetic head assembly includes: a magnetic recording head, a head slider, a suspension and an actuator arm. The magnetic recording head includes a spin torque oscillator and a main magnetic pole. The spin torque oscillator includes, a first magnetic layer including at least one selected from the group consisting of a Fe—Co—Al alloy, a Fe—Co—Si alloy, a Fe—Co—Ge alloy, a Fe—Co—Mn alloy a Fe—Co—Cr alloy and a Fe—Co—B alloy, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The main magnetic pole is placed together with the spin torque oscillator. The magnetic recording head is mounted on the head slider. The head slider is mounted on one end of the suspension. The actuator arm is connected to other end of the suspension.

摘要翻译： 磁头组件包括：磁记录头，磁头滑块，悬架和致动器臂。 磁记录头包括自旋扭矩振荡器和主磁极。 自旋转矩振荡器包括：第一磁性层，其包括选自由Fe-Co-Al合金，Fe-Co-Si合金，Fe-Co-Ge合金，Fe-Co-Mn 合金Fe-Co-Cr合金和Fe-Co-B合金，第二磁性层和设置在第一磁性层和第二磁性层之间的中间层。 主磁极与自旋扭矩振荡器一起放置。 磁记录头安装在磁头滑块上。 磁头滑块安装在悬架的一端。 执行器臂连接到悬架的另一端。

公开(公告)号：US20050052787A1

公开(公告)日：2005-03-10

申请号：US10936715

申请日：2004-09-09

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01L43/08

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

公开(公告)号：US07405906B2

公开(公告)日：2008-07-29

申请号：US10936715

申请日：2004-09-09

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

公开(公告)号：US20080106826A1

公开(公告)日：2008-05-08

申请号：US11965177

申请日：2007-12-27

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

公开(公告)号：US20080106825A1

公开(公告)日：2008-05-08

申请号：US11965123

申请日：2007-12-27

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

公开(公告)号：US09222994B2

公开(公告)日：2015-12-29

申请号：US13200148

申请日：2011-09-19

申请人： Yuchen Zhou ,  Kunliang Zhang ,  Min Li ,  Kenichi Takano ,  Joe Smyth ,  Moris Dovek ,  Akihiko Takeo ,  Tomomi Funayama ,  Masahiro Takashita ,  Masayuki Takagishi

发明人： Yuchen Zhou ,  Kunliang Zhang ,  Min Li ,  Kenichi Takano ,  Joe Smyth ,  Moris Dovek ,  Akihiko Takeo ,  Tomomi Funayama ,  Masahiro Takashita ,  Masayuki Takagishi

IPC分类号： G01R23/02 ,  G01R33/12 ,  G11B5/39 ,  H01L43/08 ,  G11C11/16

CPC分类号： G01R33/1284 ,  G11B5/3903 ,  G11C11/161 ,  G11C11/1673 ,  G11C11/1675 ,  H01L43/08

摘要： A method for measuring the frequency in a spin torque oscillator having at least a magnetic oscillation layer (MOL), junction layer, and magnetic reference layer (MRL) is disclosed. In a first embodiment, a small in-plane magnetic field is applied to the STO after a DC current is applied to excite the MOL into an oscillation state. The MRL has a perpendicular magnetization that is tilted slightly to give an in-plane magnetization component to serve as a reference layer for measuring the oscillation frequency of the MOL in-plane magnetization component. An AC voltage change is produced in the DC current as a result of variable STO resistance and directly correlates to MOL oscillation frequency. Alternatively, a field having both perpendicular and in-plane components may be applied externally or by forming the STO between two magnetic poles thereby producing an in-plane magnetization reference component in the MRL.

摘要翻译： 公开了一种用于测量至少具有磁振荡层（MOL），结层和磁参考层（MRL）的自旋转矩振荡器中的频率的方法。 在第一实施例中，在施加DC电流以将MOL激发到振荡状态之后，将小的面内磁场施加到STO。 MRL具有稍微倾斜的垂直磁化，以产生面内磁化分量，用作用于测量MOL面内磁化分量的振荡频率的参考层。 作为可变STO电阻的结果，在DC电流中产生AC电压变化，并直接与MOL振荡频率相关。 或者，具有垂直和平面内部分量的场可以在外部施加，或者通过在两个磁极之间形成STO，从而在MRL中产生面内磁化参考分量。

公开(公告)号：US20130069626A1

公开(公告)日：2013-03-21

申请号：US13200148

申请日：2011-09-19

申请人： Yuchen Zhou ,  Kunliang Zhang ,  Min Li ,  Kenichi Takano ,  Joe Smyth ,  Moris Dovek ,  Akihiko Takeo ,  Tomomi Funayama ,  Masahiro Takashita ,  Masayuki Takagishi

发明人： Yuchen Zhou ,  Kunliang Zhang ,  Min Li ,  Kenichi Takano ,  Joe Smyth ,  Moris Dovek ,  Akihiko Takeo ,  Tomomi Funayama ,  Masahiro Takashita ,  Masayuki Takagishi

IPC分类号： G01R23/02

CPC分类号： G01R33/1284 ,  G11B5/3903 ,  G11C11/161 ,  G11C11/1673 ,  G11C11/1675 ,  H01L43/08

摘要： A method for measuring the frequency in a spin torque oscillator having at least a magnetic oscillation layer (MOL), junction layer, and magnetic reference layer (MRL) is disclosed. In a first embodiment, a small in-plane magnetic field is applied to the STO after a DC current is applied to excite the MOL into an oscillation state. The MRL has a perpendicular magnetization that is tilted slightly to give an in-plane magnetization component to serve as a reference layer for measuring the oscillation frequency of the MOL in-plane magnetization component. An AC voltage change is produced in the DC current as a result of variable STO resistance and directly correlates to MOL oscillation frequency. Alternatively, a field having both perpendicular and in-plane components may be applied externally or by forming the STO between two magnetic poles thereby producing an in-plane magnetization reference component in the MRL.

公开(公告)号：US07130164B2

公开(公告)日：2006-10-31

申请号：US11061513

申请日：2005-02-22

申请人： Katsuhiko Koui ,  Masatoshi Yoshikawa ,  Masayuki Takagishi ,  Masashi Sahashi ,  Takeo Sakakubo ,  Hitoshi Iwasaki

发明人： Katsuhiko Koui ,  Masatoshi Yoshikawa ,  Masayuki Takagishi ,  Masashi Sahashi ,  Takeo Sakakubo ,  Hitoshi Iwasaki

IPC分类号： G11B5/39

CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B2005/3996 ,  H01F10/3254 ,  H01F10/3259 ,  H01F10/3268 ,  H01L27/224 ,  H01L27/228

摘要： A magnetoresistance effect element comprises a magnetoresistance effect film including a magnetically pinned layer whose direction of magnetization is pinned substantially in one direction, a magnetically free layer whose direction of magnetization changes in response to an external magnetic field, and a nonmagnetic intermediate layer located between the pinned layer and the free layer; and a pair of electrodes electrically connected to said magnetoresistance effect film to supply a sense current perpendicularly to a film plane of said magnetoresistance effect film. The intermediate layer has a first layer including a first region whose resistance is relatively high and second regions whose resistance is relatively low. The sense current preferentially flows through the second regions when the current passes the first layer. Alternatively, the concentration of oxygen in the first layer may have a two-dimensional fluctuation, and a first region where the concentration of oxygen is equal to or higher than 40 atomic % and a second region where the concentration of oxygen is equal to or lower than 35 atomic % may be provided in the first layer.