公开(公告)号：US20090224342A1

公开(公告)日：2009-09-10

申请号：US12248484

申请日：2008-10-09

申请人： Masahiko NAKAYAMA ,  Kay Yakushiji ,  Sumio Ikegawa ,  Shinji Yuasa ,  Tadashi Kai ,  Toshihiko Nagase ,  Minoru Amano ,  Hisanori Aikawa ,  Tatsuya Kishi ,  Hiroaki Yoda

发明人： Masahiko NAKAYAMA ,  Kay Yakushiji ,  Sumio Ikegawa ,  Shinji Yuasa ,  Tadashi Kai ,  Toshihiko Nagase ,  Minoru Amano ,  Hisanori Aikawa ,  Tatsuya Kishi ,  Hiroaki Yoda

IPC分类号： H01L29/82

CPC分类号： H01L27/228 ,  B82Y25/00 ,  G11C11/15 ,  G11C11/1659 ,  G11C11/1675 ,  H01F10/123 ,  H01F10/325 ,  H01F10/3254 ,  H01F10/3286 ,  H01L43/08

摘要： A magnetoresistive effect element includes a reference layer, a recording layer, and a nonmagnetic layer. The reference layer is made of a magnetic material, has an invariable magnetization which is perpendicular to a film surface. The recording layer is made of a magnetic material, has a variable magnetization which is perpendicular to the film surface. The nonmagnetic layer is arranged between the reference layer and the recording layer. A critical diameter which is determined by magnetic anisotropy, saturation magnetization, and switched connection of the recording layer and has a single-domain state as a unique stable state or a critical diameter which has a single-domain state as a unique stable state and is inverted while keeping the single-domain state in an inverting process is larger than an element diameter of the magnetoresistive effect element.

摘要翻译： 磁阻效应元件包括参考层，记录层和非磁性层。 参考层由磁性材料制成，具有垂直于膜表面的不变磁化。 记录层由磁性材料制成，具有垂直于膜表面的可变磁化强度。 非磁性层布置在参考层和记录层之间。 临界直径由磁各向异性，饱和磁化强度和记录层的开关连接确定，并且具有作为独特稳定状态的单畴状态或具有单域状态作为唯一稳定状态的临界直径，并且是 在反转过程中保持单畴状态的反转大于磁阻效应元件的元件直径。

公开(公告)号：US08378437B2

公开(公告)日：2013-02-19

申请号：US12248484

申请日：2008-10-09

申请人： Masahiko Nakayama ,  Kay Yakushiji ,  Sumio Ikegawa ,  Shinji Yuasa ,  Tadashi Kai ,  Toshihiko Nagase ,  Minoru Amano ,  Hisanori Aikawa ,  Tatsuya Kishi ,  Hiroaki Yoda

发明人： Masahiko Nakayama ,  Kay Yakushiji ,  Sumio Ikegawa ,  Shinji Yuasa ,  Tadashi Kai ,  Toshihiko Nagase ,  Minoru Amano ,  Hisanori Aikawa ,  Tatsuya Kishi ,  Hiroaki Yoda

IPC分类号： H01L29/82

CPC分类号： H01L27/228 ,  B82Y25/00 ,  G11C11/15 ,  G11C11/1659 ,  G11C11/1675 ,  H01F10/123 ,  H01F10/325 ,  H01F10/3254 ,  H01F10/3286 ,  H01L43/08

摘要： A magnetoresistive effect element includes a reference layer, a recording layer, and a nonmagnetic layer. The reference layer is made of a magnetic material, has an invariable magnetization which is perpendicular to a film surface. The recording layer is made of a magnetic material, has a variable magnetization which is perpendicular to the film surface. The nonmagnetic layer is arranged between the reference layer and the recording layer. A critical diameter which is determined by magnetic anisotropy, saturation magnetization, and switched connection of the recording layer and has a single-domain state as a unique stable state or a critical diameter which has a single-domain state as a unique stable state and is inverted while keeping the single-domain state in an inverting process is larger than an element diameter of the magnetoresistive effect element.

摘要翻译： 磁阻效应元件包括参考层，记录层和非磁性层。 参考层由磁性材料制成，具有垂直于膜表面的不变磁化。 记录层由磁性材料制成，具有垂直于膜表面的可变磁化强度。 非磁性层布置在参考层和记录层之间。 临界直径由磁各向异性，饱和磁化强度和记录层的开关连接确定，并且具有作为独特稳定状态的单畴状态或具有单域状态作为唯一稳定状态的临界直径，并且是 在反转过程中保持单畴状态的反转大于磁阻效应元件的元件直径。

公开(公告)号：US08223533B2

公开(公告)日：2012-07-17

申请号：US12556883

申请日：2009-09-10

申请人： Jyunichi Ozeki ,  Naoharu Shimomura ,  Sumio Ikegawa ,  Tadashi Kai ,  Masahiko Nakayama ,  Hisanori Aikawa ,  Tatsuya Kishi ,  Hiroaki Yoda ,  Eiji Kitagawa ,  Masatoshi Yoshikawa

发明人： Jyunichi Ozeki ,  Naoharu Shimomura ,  Sumio Ikegawa ,  Tadashi Kai ,  Masahiko Nakayama ,  Hisanori Aikawa ,  Tatsuya Kishi ,  Hiroaki Yoda ,  Eiji Kitagawa ,  Masatoshi Yoshikawa

IPC分类号： G11C11/00

CPC分类号： H01L27/228 ,  B82Y25/00 ,  G11C11/161 ,  G11C11/5607 ,  H01F10/123 ,  H01F10/3254 ,  H01F10/3277 ,  H01F10/3286 ,  H01F10/329 ,  H01L43/08

摘要： A magnetic memory includes a magnetoresistive effect device comprising: a first ferromagnetic layer that has magnetic anisotropy in a direction perpendicular to a film plane thereof; a first nonmagnetic layer that is provided on the first ferromagnetic layer; a first reference layer that is provided on the first nonmagnetic layer, has magnetic anisotropy in a direction perpendicular to a film plane thereof, has magnetization antiparallel to a magnetization direction of the first ferromagnetic layer, and has a film thickness that is 1/5.2 to 1/1.5 times as large as a film thickness of the first ferromagnetic layer in the direction perpendicular to the film plane; a second nonmagnetic layer that is provided on the first reference layer; and a storage layer that is provided on the second nonmagnetic layer, has magnetic anisotropy in a direction perpendicular to a film plane thereof, and has a magnetization direction varied by spin-polarized electrons caused by flowing the current to the magnetoresistive effect device.

摘要翻译： 磁存储器包括磁阻效应器件，包括：在垂直于其膜平面的方向上具有磁各向异性的第一铁磁层; 设置在第一铁磁层上的第一非磁性层; 设置在第一非磁性层上的第一参考层在垂直于其膜平面的方向上具有磁各向异性，具有与第一铁磁层的磁化方向反平行的磁化，并且具有1 / 5.2〜 在第一铁磁层的垂直于膜平面的方向上的膜厚度的1/15倍; 设置在第一参考层上的第二非磁性层; 并且设置在第二非磁性层上的存储层在垂直于其膜平面的方向上具有磁各向异性，并且由于使电流流向磁阻效应器而引起的由自旋极化电子变化的磁化方向。

公开(公告)号：US20120241884A1

公开(公告)日：2012-09-27

申请号：US13432486

申请日：2012-03-28

申请人： Hisanori AIKAWA ,  Tadashi Kai ,  Masahiko Nakayama ,  Sumio Ikegawa ,  Naoharu Shimomura ,  Eiji Kitagawa ,  Tatsuya Kishi ,  Jyunichi Ozeki ,  Hiroaki Yoda ,  Satoshi Yanagi

发明人： Hisanori AIKAWA ,  Tadashi Kai ,  Masahiko Nakayama ,  Sumio Ikegawa ,  Naoharu Shimomura ,  Eiji Kitagawa ,  Tatsuya Kishi ,  Jyunichi Ozeki ,  Hiroaki Yoda ,  Satoshi Yanagi

IPC分类号： H01L29/82

CPC分类号： H01L43/08 ,  G11C11/161 ,  H01L27/228

摘要： According to one embodiment, a magnetic memory includes a magnetoresistive element. The magnetoresistive element includes a reference layer having an invariable magnetization direction, a storage layer having a variable magnetization direction, and a spacer layer provided between the reference layer and the storage layer. The storage layer has a multilayered structure including first and second magnetic layers, the second magnetic layer is provided between the first magnetic layer and the spacer layer and has a magnetic anisotropy energy lower than that of the first magnetic layer, and an exchange coupling constant Jex between the first magnetic layer and the second magnetic layer is not more than 5 erg/cm2.

摘要翻译： 根据一个实施例，磁存储器包括磁阻元件。 磁阻元件包括具有不变磁化方向的参考层，具有可变磁化方向的存储层和设置在参考层和存储层之间的间隔层。 存储层具有包括第一和第二磁性层的多层结构，第二磁性层设置在第一磁性层和间隔层之间，其磁各向异性能量低于第一磁性层的磁各向异性能，交换耦合常数Jex 第一磁性层和第二磁性层之间的距离不大于5erg / cm2。

公开(公告)号：US08530987B2

公开(公告)日：2013-09-10

申请号：US13432486

申请日：2012-03-28

申请人： Hisanori Aikawa ,  Tadashi Kai ,  Masahiko Nakayama ,  Sumio Ikegawa ,  Naoharu Shimomura ,  Eiji Kitagawa ,  Tatsuya Kishi ,  Jyunichi Ozeki ,  Hiroaki Yoda ,  Satoshi Yanagi

发明人： Hisanori Aikawa ,  Tadashi Kai ,  Masahiko Nakayama ,  Sumio Ikegawa ,  Naoharu Shimomura ,  Eiji Kitagawa ,  Tatsuya Kishi ,  Jyunichi Ozeki ,  Hiroaki Yoda ,  Satoshi Yanagi

IPC分类号： H01L29/82 ,  G11C11/02

CPC分类号： H01L43/08 ,  G11C11/161 ,  H01L27/228

摘要： A magnetic memory includes a magnetoresistive element. The magnetoresistive element includes a reference layer having an invariable magnetization direction, a storage layer having a variable magnetization direction, and a spacer layer provided between the reference layer and the storage layer. The storage layer has a multilayered structure including first and second magnetic layers, the second magnetic layer is provided between the first magnetic layer and the spacer layer and has a magnetic anisotropy energy lower than that of the first magnetic layer, and an exchange coupling constant Jex between the first magnetic layer and the second magnetic layer is not more than 5 erg/cm2.

摘要翻译： 磁存储器包括磁阻元件。 磁阻元件包括具有不变磁化方向的参考层，具有可变磁化方向的存储层和设置在参考层和存储层之间的间隔层。 存储层具有包括第一和第二磁性层的多层结构，第二磁性层设置在第一磁性层和间隔层之间，其磁各向异性能量低于第一磁性层的磁各向异性能，交换耦合常数Jex 第一磁性层和第二磁性层之间的距离不大于5erg / cm2。

公开(公告)号：US20090140358A1

公开(公告)日：2009-06-04

申请号：US12364132

申请日：2009-02-02

申请人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

发明人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

IPC分类号： H01L43/08

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  Y10T428/1121

摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.

摘要翻译： 磁阻元件包括具有第一磁化的第一铁磁层，当在第一数据写入期间磁阻元件被半选择时，第一磁化具有第一图案，当在第二数据写入期间选择磁阻元件时的第二图案;以及 剩余磁化的第三图案，第一图案不同于第二和第三图案，具有第二磁化的第二铁磁层，以及布置在第一铁磁层和第二铁磁层之间并且具有隧道电导变化依赖性的非磁性层 在第一磁化和第二磁化之间的相对角度上。

公开(公告)号：US20080131732A1

公开(公告)日：2008-06-05

申请号：US12019743

申请日：2008-01-25

申请人： Masahiko NAKAYAMA ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

发明人： Masahiko NAKAYAMA ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

IPC分类号： G11B5/39

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  Y10T428/1121

摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.

摘要翻译： 磁阻元件包括具有第一磁化的第一铁磁层，当在第一数据写入期间磁阻元件被半选择时，第一磁化具有第一图案，当在第二数据写入期间选择磁阻元件时的第二图案，以及 剩余磁化的第三图案，第一图案不同于第二和第三图案，具有第二磁化的第二铁磁层，以及布置在第一铁磁层和第二铁磁层之间并且具有隧道电导变化依赖性的非磁性层 在第一磁化和第二磁化之间的相对角度上。

公开(公告)号：US07518907B2

公开(公告)日：2009-04-14

申请号：US12019743

申请日：2008-01-25

申请人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

发明人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

IPC分类号： G11C11/00

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  Y10T428/1121

摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.

摘要翻译： 磁阻元件包括具有第一磁化的第一铁磁层，当在第一数据写入期间磁阻元件被半选择时，第一磁化具有第一图案，当在第二数据写入期间选择磁阻元件时的第二图案;以及 剩余磁化的第三图案，第一图案不同于第二和第三图案，具有第二磁化的第二铁磁层，以及布置在第一铁磁层和第二铁磁层之间并且具有隧道电导变化依赖性的非磁性层 在第一磁化和第二磁化之间的相对角度上。

公开(公告)号：US08009465B2

公开(公告)日：2011-08-30

申请号：US12364132

申请日：2009-02-02

申请人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

发明人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

IPC分类号： G11C11/00

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  Y10T428/1121

摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.

摘要翻译： 磁阻元件包括具有第一磁化的第一铁磁层，当在第一数据写入期间磁阻元件被半选择时，第一磁化具有第一图案，当在第二数据写入期间选择磁阻元件时的第二图案;以及 剩余磁化的第三图案，第一图案不同于第二和第三图案，具有第二磁化的第二铁磁层，以及布置在第一铁磁层和第二铁磁层之间的非磁性层，并且具有隧道电导变化依赖 在第一磁化和第二磁化之间的相对角度上。

公开(公告)号：US07355884B2

公开(公告)日：2008-04-08

申请号：US11245353

申请日：2005-10-07

申请人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

发明人： Masahiko Nakayama ,  Tadashi Kai ,  Tatsuya Kishi ,  Yoshiaki Fukuzumi ,  Toshihiko Nagase ,  Sumio Ikegawa ,  Hiroaki Yoda

IPC分类号： G11C11/00

CPC分类号： H01L43/08 ,  G11C11/161 ,  G11C11/1657 ,  G11C11/1659 ,  G11C11/1673 ,  G11C11/1675 ,  Y10T428/1121

摘要： A magnetoresistive element includes a first ferromagnetic layer having a first magnetization, the first magnetization having a first pattern when the magnetoresistive element is half-selected during a first data write, a second pattern when the magnetoresistive element is selected during a second data write, and a third pattern of residual magnetization, the first pattern being different from the second and third pattern, a second ferromagnetic layer having a second magnetization, and a nonmagnetic layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and having a tunnel conductance changing dependent on a relative angle between the first magnetization and the second magnetization.

摘要翻译： 磁阻元件包括具有第一磁化的第一铁磁层，当在第一数据写入期间磁阻元件被半选择时，第一磁化具有第一图案，当在第二数据写入期间选择磁阻元件时的第二图案，以及 剩余磁化的第三图案，第一图案不同于第二和第三图案，具有第二磁化的第二铁磁层，以及布置在第一铁磁层和第二铁磁层之间并且具有隧道电导变化依赖性的非磁性层 在第一磁化和第二磁化之间的相对角度上。