公开(公告)号：US5999378A

公开(公告)日：1999-12-07

申请号：US980871

申请日：1997-12-01

申请人： Kazuhiro Saito ,  Hiromi Fuke ,  Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Masashi Sahashi ,  Hiroaki Kawashima ,  Taro Oike ,  Koichi Terunuma ,  Haruyuki Morita

发明人： Kazuhiro Saito ,  Hiromi Fuke ,  Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Masashi Sahashi ,  Hiroaki Kawashima ,  Taro Oike ,  Koichi Terunuma ,  Haruyuki Morita

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B2005/3996

摘要： A magnetoresistance effect head comprises a giant magnetoresistance effect film, a pair of leads to supply an electric current to the giant magnetoresistance effect head, and upper and lower magnetic shielding layers made of a crystalline soft magnetic film and disposed to hold the giant magnetoresistance effect film therebetween with a magnetic gap film intervened, wherein the surface roughness of an under layer of the giant magnetoresistance effect film is determined so that a center period L of the surface roughness satisfies L>70 nm.

摘要翻译： 磁阻效应头包括巨磁阻效应膜，一对向巨磁电阻效应头供电的引线，以及由结晶软磁膜制成的上下磁屏蔽层，并设置成保持巨磁阻效应膜 其间插入有磁隙膜，其中确定巨磁阻效应膜的下层的表面粗糙度，使得表面粗糙度的中心周期L满足L> 70nm。

公开(公告)号：US20050030676A1

公开(公告)日：2005-02-10

申请号：US10937652

申请日：2004-09-10

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

IPC分类号： G11B5/39 ,  G01R33/09 ,  G11B5/66 ,  G11B5/33 ,  G11B5/127

CPC分类号： H01F10/30 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3932 ,  G11B5/66 ,  G11B2005/3996 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/325 ,  Y10S428/90 ,  Y10T428/1107 ,  Y10T428/1121 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1171 ,  Y10T428/1193 ,  Y10T428/12326 ,  Y10T428/12465 ,  Y10T428/12986 ,  Y10T428/265

摘要： Disclosed are a high-sensitivity and high-reliability magnetoresistance effect device (MR device) in which bias point designing is easy, and also a magnetic head, a magnetic head assembly and a magnetic recording/reproducing system incorporating the MR device. In the MR device incorporating a spin valve film, the magnetization direction of the free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer therein when the applied magnetic field is zero. In this, the pinned magnetic layer comprises a pair of ferromagnetic films as antiferromagnetically coupled to each other via a coupling film existing therebetween. The device is provided with a means of keeping the magnetization direction of either one of the pair of ferromagnetic films constituting the pinned magnetic layer, and with a nonmagnetic high-conductivity layer as disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer is contacted with a nonmagnetic spacer layer. With that constitution, the device has extremely high sensitivity, and the bias point in the device is well controlled.

摘要翻译： 公开了一种容易进行偏置设计的高灵敏度和高可靠性磁阻效应器件（MR器件），以及包含MR器件的磁头，磁头组件和磁记录/再现系统。 在包含自旋阀膜的MR装置中，当施加的磁场为零时，自由层的磁化方向与其中第二铁磁性层的磁化方向成一定角度。 在此，被钉扎的磁性层包括通过其间存在的耦合膜彼此反铁磁耦合的一对铁磁膜。 该装置设置有保持构成被钉扎磁性层的一对铁磁膜中的任一个的磁化方向以及与侧面相反侧的第一铁磁层相邻设置的非磁性高导电性层 第一铁磁层与非磁性间隔层接触。 利用该结构，该器件具有极高的灵敏度，并且器件中的偏置点被良好地控制。

公开(公告)号：US06338899B1

公开(公告)日：2002-01-15

申请号：US09332440

申请日：1999-06-14

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

IPC分类号： G11B566

CPC分类号： H01F10/30 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3932 ,  G11B5/66 ,  G11B2005/3996 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/325 ,  Y10S428/90 ,  Y10T428/1107 ,  Y10T428/1121 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1171 ,  Y10T428/1193 ,  Y10T428/12326 ,  Y10T428/12465 ,  Y10T428/12986 ,  Y10T428/265

摘要： Disclosed are a high-sensitivity and high-reliability magnetoresistance effect device (MR device) in which bias point designing is easy, and also a magnetic head, a magnetic head assembly and a magnetic recording/reproducing system incorporating the MR device. In the MR device incorporating a spin valve film, the magnetization direction of the free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer therein when the applied magnetic field is zero. In this, the pinned magnetic layer comprises a pair of ferromagnetic films as antiferromagnetically coupled to each other via a coupling film existing therebetween. The device is provided with a means of keeping the magnetization direction of either one of the pair of ferromagnetic films constituting the pinned magnetic layer, and with a nonmagnetic high-conductivity layer as disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer is contacted with a nonmagnetic spacer layer. With that constitution, the device has extremely high sensitivity, and the bias point in the device is well controlled.

摘要翻译： 公开了一种容易进行偏置设计的高灵敏度和高可靠性磁阻效应器件（MR器件），以及包含MR器件的磁头，磁头组件和磁记录/再现系统。 在包含自旋阀膜的MR装置中，当施加的磁场为零时，自由层的磁化方向与其中第二铁磁性层的磁化方向成一定角度。 在此，被钉扎的磁性层包括通过其间存在的耦合膜彼此反铁磁耦合的一对铁磁膜。 该装置设置有保持构成被钉扎磁性层的一对铁磁膜中的任一个的磁化方向以及与侧面相反侧的第一铁磁层相邻设置的非磁性高导电性层 第一铁磁层与非磁性间隔层接触。 利用该结构，该器件具有极高的灵敏度，并且器件中的偏置点被良好地控制。

公开(公告)号：US20050167770A1

公开(公告)日：2005-08-04

申请号：US11079322

申请日：2005-03-15

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

IPC分类号： G11B5/39 ,  G01R33/09 ,  G11B5/66 ,  H01L43/00

CPC分类号： H01F10/30 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3932 ,  G11B5/66 ,  G11B2005/3996 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/325 ,  Y10S428/90 ,  Y10T428/1107 ,  Y10T428/1121 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1171 ,  Y10T428/1193 ,  Y10T428/12326 ,  Y10T428/12465 ,  Y10T428/12986 ,  Y10T428/265

摘要： Disclosed are a high-sensitivity and high-reliability magnetoresistance effect device (MR device) in which bias point designing is easy, and also a magnetic head, a magnetic head assembly and a magnetic recording/reproducing system incorporating the MR device. In the MR device incorporating a spin valve film, the magnetization direction of the free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer therein when the applied magnetic field is zero. In this, the pinned magnetic layer comprises a pair of ferromagnetic films as antiferromagnetically coupled to each other via a coupling film existing therebetween. The device is provided with a means of keeping the magnetization direction of either one of the pair of ferromagnetic films constituting the pinned magnetic layer, and with a nonmagnetic high-conductivity layer as disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer is contacted with a nonmagnetic spacer layer. With that constitution, the device has extremely high sensitivity, and the bias point in the device is well controlled.

公开(公告)号：US06636399B2

公开(公告)日：2003-10-21

申请号：US09927364

申请日：2001-08-13

申请人： Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Hiromi Fuke ,  Kazuhiro Saito ,  Masashi Sahashi

发明人： Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Hiromi Fuke ,  Kazuhiro Saito ,  Masashi Sahashi

IPC分类号： G11B5139

CPC分类号： H01F10/3268 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  H01L27/222 ,  H01L43/08

摘要： A magnetoresistance effect device comprises a magnetic multi-layer film having at least an antiferromagnetic film, a first ferromagnetic film, a non-magnetic film, and a second ferromagnetic film formed in the order on the front surface portion of the substrate, the magnetic multi-layer film having giant magnetoresistance effect, at least the second ferromagnetic film having a shape corresponding to a magnetic field detecting portion. The bias magnetic field applying films are disposed on a conductive film of the magnetic multi-layer film at outer portions of both edge portions of the magnetic field detecting portion of the magnetoresistance effective film. Alternatively, the second ferromagnetic film has a first portion corresponding to the magnetic field detecting portion and a second portion corresponding to the outer portions of both the edge portions of the magnetic field detecting portion, the film thickness-of the second portion being smaller than the film thickness of the first portion. The bias magnetic field applying films are formed at the outer portions of both the edge portions of the magnetic field detecting portion of the second ferromagnetic film. With the reversely structured magnetoresistance effect film and the laminate positions of the bias magnetic field applying films, in addition to suppressing the reproduction fringe and Barkhausen noise, the decrease of contact resistance, the suppression of insulation detect, and good linear response characteristic can be accomplished.

公开(公告)号：US07738220B1

公开(公告)日：2010-06-15

申请号：US11779034

申请日：2007-07-17

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

IPC分类号： G11B5/39

CPC分类号： B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3932 ,  G11B5/66 ,  G11B2005/3996 ,  Y10T428/1121

摘要： A magnetoresistance effect element, comprising a nonmagnetic spacer layer, first and second ferromagnetic layers separated by the nonmagnetic spacer layer, the first ferromagnetic layer having a magnetization direction at an angle relative to a magnetization direction of the second ferromagnetic layer at zero applied magnetic field, the magnetization of the first ferromagnetic layer freely rotating in a magnetic field signal, a magnetoresistance effect-improving layer comprising a plurality of metal films and disposed in contact with the first ferromagnetic layer so that the first ferromagnetic layer is disposed between the nonmagnetic spacer layer and the magnetoresistance effect-improving layer, one of the plurality of metal films disposed in contact with the first ferromagnetic layer contains metal element of not solid solution with metal element of the first ferromagnetic layer and a nonmagnetic underlayer or a nonmagnetic protecting layer disposed in contact with the magnetoresistance effect-improving layer so that the magnetoresistance effect-improving layer is disposed between the first ferromagnetic layer and the nonmagnetic underlayer or the nonmagnetic protecting layer.

摘要翻译： 一种磁阻效应元件，包括非磁性间隔层，由非磁性间隔层隔开的第一和第二铁磁层，第一铁磁层具有相对于第二铁磁层在零施加磁场的磁化方向的一个角度的磁化方向， 在磁场信号中自由旋转的第一铁磁层的磁化，包含多个金属膜并与第一铁磁层接触设置的磁阻效应改善层，使得第一铁磁层设置在非磁性间隔层和 设置成与第一铁磁层接触的多个金属膜中的一个的磁阻效应改善层包含不是第一铁磁层的金属元素的非固溶金属元素和非磁性底层或与非磁性保护层接触的非磁性保护层 磁阻 使得磁阻效应改善层设置在第一铁磁层和非磁性底层或非磁性保护层之间。

公开(公告)号：US07375405B2

公开(公告)日：2008-05-20

申请号：US11079322

申请日：2005-03-15

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

IPC分类号： H01L29/82 ,  H01L43/00 ,  G11B5/127

CPC分类号： H01F10/30 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3932 ,  G11B5/66 ,  G11B2005/3996 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/325 ,  Y10S428/90 ,  Y10T428/1107 ,  Y10T428/1121 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1171 ,  Y10T428/1193 ,  Y10T428/12326 ,  Y10T428/12465 ,  Y10T428/12986 ,  Y10T428/265

摘要： A magnetoresistance effect (MR) device incorporating a spin valve film, and a magnetic head, a magnetic head assembly and a magnetic recording/reproducing system incorporating the MR device, wherein the magnetization direction of a free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer therein when the applied magnetic field is zero. A pinned magnetic layer includes a pair of ferromagnetic films antiferromagnetically coupled to each other via a coupling film existing therebetween. The magnetization direction of either one of the pair of ferromagnetic films constituting the pinned magnetic layer is maintained, and a nonmagnetic high-conductivity layer is disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer is contacted with a nonmagnetic spacer layer. With that constitution, the device has extremely high sensitivity, and the bias point in the device is well controlled.

摘要翻译： 包含自旋阀膜的磁阻效应（MR）装置，以及包含MR装置的磁头，磁头组件和磁记录/再现系统，其中自由层的磁化方向与磁化强度成一定角度 当施加的磁场为零时，其中第二铁磁层的方向。 钉扎磁性层包括通过其间存在的耦合膜彼此反铁磁耦合的一对铁磁膜。 构成构成被钉扎磁性层的一对强磁性膜中的任一个的磁化方向被保持，并且非磁性高电导率层与第一铁磁层相邻的第一铁磁层相邻的一侧设置在与第一铁磁层接触的一侧相反的一侧 具有非磁性间隔层。 利用该结构，该器件具有极高的灵敏度，并且器件中的偏置点被良好地控制。

公开(公告)号：US06690553B2

公开(公告)日：2004-02-10

申请号：US09837373

申请日：2001-04-19

申请人： Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Hiromi Fuke ,  Kazuhiro Saito ,  Masashi Sahashi

发明人： Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Hiromi Fuke ,  Kazuhiro Saito ,  Masashi Sahashi

IPC分类号： G11B5139

CPC分类号： H01F10/3268 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  H01L27/222 ,  H01L43/08

摘要： A magnetoresistance effect device comprises a magnetic multi-layer film having at least an antiferromagnetic film, a first ferromagnetic film, a non-magnetic film, and a second ferromagnetic film formed in the order on the front surface portion of the substrate, the magnetic multi-layer film having giant magnetoresistance effect, at least the second ferromagnetic film having a shape corresponding to a magnetic field detecting portion. The bias magnetic field applying films are disposed on a conductive film of the magnetic multi-layer film at outer portions of both edge portions of the magnetic field detecting portion of the magnetoresistance effective film. Alternatively, the second ferromagnetic film has a first portion corresponding to the magnetic field detecting portion and a second portion corresponding to the outer portions of both the edge portions of the magnetic field detecting portion, the film thickness of the second portion being smaller than the film thickness of the first portion. The bias magnetic field applying films are formed at the outer portions of both the edge portions of the magnetic field detecting portion of the second ferromagnetic film. With the reversely structured magnetoresistance effect film and the laminate positions of the bias magnetic field applying films, in addition to suppressing the reproduction fringe and Barkhausen noise, the decrease of contact resistance, the suppression of insulation detect, and good linear response characteristic can be accomplished.

摘要翻译： 磁阻效应器件包括至少具有反铁磁膜，第一铁磁膜，非磁性膜和在衬底的前表面部分上依次形成的第二铁磁膜的磁性多层膜，磁性多层膜 至少第二铁磁膜具有与磁场检测部分对应的形状。 偏磁场施加膜在磁阻效应膜的磁场检测部分的两个边缘部分的外部部分设置在磁性多层膜的导电膜上。 或者，第二铁磁膜具有对应于磁场检测部分的第一部分和对应于磁场检测部分的两个边缘部分的外部的第二部分，第二部分的膜厚度小于膜 第一部分的厚度。 偏磁场施加膜形成在第二铁磁膜的磁场检测部分的两个边缘部分的外部。 利用反向结构的磁阻效应膜和偏置磁场施加膜的叠层位置，除了抑制再生条纹和巴克豪森噪声之外，还可以实现接触电阻的降低，绝缘检测的抑制和良好的线性响应特性 。

公开(公告)号：US06088195A

公开(公告)日：2000-07-11

申请号：US827122

申请日：1997-03-27

申请人： Yuzo Kamiguchi ,  Kazuhiro Saito ,  Hideaki Fukuzawa ,  Hiromi Fuke ,  Hitoshi Iwasaki ,  Masashi Sahashi

发明人： Yuzo Kamiguchi ,  Kazuhiro Saito ,  Hideaki Fukuzawa ,  Hiromi Fuke ,  Hitoshi Iwasaki ,  Masashi Sahashi

IPC分类号： G01R33/09 ,  G11B5/39 ,  G11C11/15 ,  H01F10/08 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  H01F10/18 ,  H01F10/187 ,  H01F10/32 ,  H01L43/08

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  H01F10/324 ,  H01F10/3281 ,  H01L43/08 ,  G11B2005/3996 ,  G11B5/3916 ,  G11B5/3932 ,  G11B5/3967 ,  H01F10/3295

摘要： A magnetoresistance effect element is provided with a laminated film which is composed of a first ferromagnetic conductive layer, a non-magnetic conductive layer superposed on the first ferromagnetic film, and a second ferromagnetic conductive layer superposed on the non-magnetic conductor layer, and which is provided with a pair of electrodes formed on the laminated film, wherein at least one of the first and second magnetic conductive layers comprises at least a first ferromagnetic layer and a second ferromagnetic film, for example, Co alloy films whose directions of axis of easy magnetization are different from each other. Furthermore, this element is a magnetoresistance effect element provided with a spin valve film having a non-magnetic layer disposed between a first magnetic layer composed of a laminated film of such a ferromagnetic film as a Co based magnetic alloy and a soft magnetic layer, and a second magnetic layer, wherein the soft magnetic layer is composed of a soft magnetic material laminated film of a soft magnetic material film of one kind or soft magnetic material films of two or more kinds, and values of their magnetization M.sub.s (T), film thickness d(nm), and anisotropic magnetic field H.sub.k (Oe) satisfy .SIGMA.(M.sub.s .times.d.times.H.sub.k)>30(Tnm Oe).

摘要翻译： 磁阻效应元件设置有由第一铁磁性导电层，叠置在第一铁磁膜上的非磁性导电层和叠加在非磁性导体层上的第二铁磁性导电层构成的层叠膜， 设置有形成在层压膜上的一对电极，其中第一和第二导电层中的至少一个至少包括第一铁磁层和第二铁磁膜，例如Co合金膜的方向的轴线方向 磁化彼此不同。 此外，该元件是具有自旋阀膜的磁阻效应元件，该自旋阀膜具有设置在由作为Co基磁性合金的这种铁磁膜的层叠膜构成的第一磁性层和软磁性层之间的非磁性层，以及 第二磁性层，其中软磁性层由一种软磁性材料膜或两种或多种软磁性材料膜的软磁性材料层压膜及其磁化强度Ms（T），膜 厚度d（nm）和各向异性磁场Hk（Oe）满足SIGMA（MsxdxHk）> 30（Tnm Oe）。

公开(公告)号：US07248448B2

公开(公告)日：2007-07-24

申请号：US10937652

申请日：2004-09-10

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Katsuhiko Koui ,  Shin-ichi Nakamura ,  Hitoshi Iwasaki ,  Kazuhiro Saito ,  Hiromi Fuke ,  Masatoshi Yoshikawa ,  Susumu Hashimoto ,  Masashi Sahashi

IPC分类号： G11B5/39

CPC分类号： H01F10/30 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3932 ,  G11B5/66 ,  G11B2005/3996 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/325 ,  Y10S428/90 ,  Y10T428/1107 ,  Y10T428/1121 ,  Y10T428/1143 ,  Y10T428/115 ,  Y10T428/1171 ,  Y10T428/1193 ,  Y10T428/12326 ,  Y10T428/12465 ,  Y10T428/12986 ,  Y10T428/265

摘要： Disclosed are a high-sensitivity and high-reliability magnetoresistance effect device (MR device) in which bias point designing is easy, and also a magnetic head, a magnetic head assembly and a magnetic recording/reproducing system incorporating the MR device. In the MR device incorporating a spin valve film, the magnetization direction of the free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer therein when the applied magnetic field is zero. In this, the pinned magnetic layer comprises a pair of ferromagnetic films as antiferromagnetically coupled to each other via a coupling film existing therebetween. The device is provided with a means of keeping the magnetization direction of either one of the pair of ferromagnetic films constituting the pinned magnetic layer, and with a nonmagnetic high-conductivity layer as disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer is contacted with a nonmagnetic spacer layer. With that constitution, the device has extremely high sensitivity, and the bias point in the device is well controlled.

摘要翻译： 公开了一种容易进行偏置设计的高灵敏度和高可靠性磁阻效应器件（MR器件），以及包含MR器件的磁头，磁头组件和磁记录/再现系统。 在包含自旋阀膜的MR装置中，当施加的磁场为零时，自由层的磁化方向与其中第二铁磁性层的磁化方向成一定角度。 在此，被钉扎的磁性层包括通过其间存在的耦合膜彼此反铁磁耦合的一对铁磁膜。 该装置设置有保持构成被钉扎磁性层的一对铁磁膜中的任一个的磁化方向以及与侧面相反侧的第一铁磁性层附近设置的非磁性高导电性层 第一铁磁层与非磁性间隔层接触。 利用该结构，该器件具有极高的灵敏度，并且器件中的偏置点被良好地控制。