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公开(公告)号:US20100020592A1
公开(公告)日:2010-01-28
申请号:US12510063
申请日:2009-07-27
申请人: Keiji HOSOTANI , Masahiko NAKAYAMA
发明人: Keiji HOSOTANI , Masahiko NAKAYAMA
CPC分类号: G11C11/1675 , G11C11/161
摘要: A first magnetic layer has a magnetization fixed along one direction. A first nonmagnetic layer on the first magnetic layer functions as a first tunnel barrier. A second magnetic layer on the first nonmagnetic layer has a magnetization whose direction can be reversed by spin transfer current injection. A second nonmagnetic layer on the second magnetic layer functions as a second tunnel barrier. A third magnetic layer on the second nonmagnetic layer has a magnetization whose direction can be reversed by spin transfer through current injection at a current density different from the second magnetic layer. First magnetic, first nonmagnetic layer, and second magnetic layers exhibit a first magnetoresistive effect. Second magnetic, second nonmagnetic, and third magnetic layers exhibit a second magnetoresistive effect. A magnetoresistive effect element records and reads out data of at least three levels based on a synthetic resistance from the first and second magnetoresistive effects.
摘要翻译: 第一磁性层具有沿着一个方向固定的磁化。 第一磁性层上的第一非磁性层用作第一隧道势垒。 第一非磁性层上的第二磁性层具有通过自旋转移电流注入方向可以反转的磁化。 第二磁性层上的第二非磁性层用作第二隧道势垒。 第二非磁性层上的第三磁性层具有磁化,其方向可以通过在不同于第二磁性层的电流密度的电流注入的自旋转移来反转。 第一磁性,第一非磁性层和第二磁性层表现出第一磁阻效应。 第二磁性,第二非磁性和第三磁性层表现出第二磁阻效应。 磁阻效应元件基于来自第一和第二磁阻效应的合成电阻来记录和读出至少三个电平的数据。
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公开(公告)号:US20080180859A1
公开(公告)日:2008-07-31
申请号:US12014522
申请日:2008-01-15
申请人: Tomomasa UEDA , Hisanori AIKAWA , Masatoshi YOSHIKAWA , Naoharu SHIMOMURA , Masahiko NAKAYAMA , Sumio IKEGAWA , Keiji HOSOTANI , Makoto NAGAMINE
发明人: Tomomasa UEDA , Hisanori AIKAWA , Masatoshi YOSHIKAWA , Naoharu SHIMOMURA , Masahiko NAKAYAMA , Sumio IKEGAWA , Keiji HOSOTANI , Makoto NAGAMINE
IPC分类号: G11B5/33
CPC分类号: G11C11/15 , H01L27/228 , H01L43/08
摘要: A magnetoresistive element includes: a magnetization free layer having a first plane and a second plane located on the opposite side from the first plane, and having a variable magnetization direction; a magnetization pinned layer provided on the first plane side of the magnetization free layer, and having a pinned magnetization direction; a first tunnel barrier layer provided between the magnetization free layer and the magnetization pinned layer; a second tunnel barrier layer provided on the second plane of the magnetization free layer; and a non-magnetic layer provided on a plane on the opposite side of the second tunnel barrier layer from the magnetization free layer. The magnetization direction of the magnetization free layer is variable by applying current between the magnetization pinned layer and the non-magnetic layer, and a resistance ratio between the first tunnel barrier layer and the second tunnel barrier layer is in a range of 1:0.25 to 1:4.
摘要翻译: 磁阻元件包括:无磁化层,其具有第一平面和位于与第一平面相反的一侧的第二平面,并且具有可变的磁化方向; 磁化固定层,设置在所述磁化自由层的所述第一平面侧上,并且具有钉扎磁化方向; 设置在所述磁化自由层和所述磁化固定层之间的第一隧道势垒层; 设置在无磁化层的第二平面上的第二隧道势垒层; 以及设置在与磁化自由层相反的第二隧道势垒层的相对侧上的平面上的非磁性层。 磁化自由层的磁化方向通过在磁化被钉扎层和非磁性层之间施加电流而变化,并且第一隧道势垒层和第二隧道势垒层之间的电阻比在1:0.25至 1:4。
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公开(公告)号:US20150325785A1
公开(公告)日:2015-11-12
申请号:US14807267
申请日:2015-07-23
申请人: Masahiko NAKAYAMA , Masatoshi YOSHIKAWA , Tadashi KAI , Yutaka HASHIMOTO , Masaru TOKO , Hiroaki YODA , Jae Geun OH , Keum Bum LEE , Choon Kun RYU , Hyung Suk LEE , Sook Joo KIM
发明人: Masahiko NAKAYAMA , Masatoshi YOSHIKAWA , Tadashi KAI , Yutaka HASHIMOTO , Masaru TOKO , Hiroaki YODA , Jae Geun OH , Keum Bum LEE , Choon Kun RYU , Hyung Suk LEE , Sook Joo KIM
CPC分类号: H01L43/02 , H01L27/222 , H01L27/224 , H01L27/226 , H01L43/08 , H01L43/10 , H01L43/12
摘要: According to one embodiment, a magnetoresistive element is disclosed. The magnetoresistive element includes a reference layer, a tunnel barrier layer, a storage layer. The storage layer includes a first region and a second region provided outside the first region to surround the first region, the second region including element included in the first region and another element being different from the element. The magnetoresistive element further includes a cap layer including a third region and a fourth region provided outside the third region to surround the third region, the fourth region including an element included in the third region and the another element.
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公开(公告)号:US20150061053A1
公开(公告)日:2015-03-05
申请号:US14203198
申请日:2014-03-10
申请人: Masahiko NAKAYAMA , Tadashi KAI , Masaru TOKO , Toshihiko NAGASE , Hiroaki YODA
发明人: Masahiko NAKAYAMA , Tadashi KAI , Masaru TOKO , Toshihiko NAGASE , Hiroaki YODA
CPC分类号: H01L43/10 , H01L27/222 , H01L27/228 , H01L27/2463 , H01L29/82 , H01L43/08 , H01L43/12 , H01L45/06
摘要: According to one embodiment, a magnetoresistive element is disclosed. The element includes a first magnetic film, a second magnetic film, and a first nonmagnetic layer formed between the first magnetic film and the second magnetic film. The second magnetic film includes a first magnetic layer formed on a side of the first nonmagnetic layer, a second magnetic layer formed on a side opposite to the first nonmagnetic layer, and a second nonmagnetic layer formed between the first magnetic layer and the second magnetic layer and containing TiN.
摘要翻译: 根据一个实施例,公开了一种磁阻元件。 元件包括第一磁性膜,第二磁性膜和形成在第一磁性膜和第二磁性膜之间的第一非磁性层。 第二磁性膜包括形成在第一非磁性层一侧的第一磁性层,形成在与第一非磁性层相反的一侧的第二磁性层和形成在第一磁性层和第二磁性层之间的第二非磁性层 并含有TiN。
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公开(公告)号:US20140284742A1
公开(公告)日:2014-09-25
申请号:US13963762
申请日:2013-08-09
申请人: Kazuya SAWADA , Toshihiko NAGASE , Youngmin EEH , Koji UEDA , Daisuke WATANABE , Masahiko NAKAYAMA , Tadashi KAI , Hiroaki YODA
发明人: Kazuya SAWADA , Toshihiko NAGASE , Youngmin EEH , Koji UEDA , Daisuke WATANABE , Masahiko NAKAYAMA , Tadashi KAI , Hiroaki YODA
摘要: According to one embodiment, a magnetoresistive element includes first, second and third magnetic layers, and first and second nonmagnetic layers. The third magnetic layer has stack layers including a first stack layer close to the second magnetic layer, and a second stack layer far from the second magnetic layer. Each of the first and second stack layers includes a first layer made of a ferromagnetic material and a second layer made of a nonmagnetic material, and a first ratio of a film thickness of the first layer to that of the second layer in the first stack layer is higher than a second ratio of a film thickness of the first layer to that of the second layer in the second stack layer.
摘要翻译: 根据一个实施例,磁阻元件包括第一,第二和第三磁性层以及第一和第二非磁性层。 第三磁性层具有包括靠近第二磁性层的第一堆叠层和远离第二磁性层的第二堆叠层的堆叠层。 第一和第二堆叠层中的每一个包括由铁磁材料制成的第一层和由非磁性材料制成的第二层,并且第一层的第一层的膜厚度与第二层的膜厚度的第一比率 高于第二层的第一层的膜厚度与第二层的膜厚度的第二比率。
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公开(公告)号:US20110309418A1
公开(公告)日:2011-12-22
申请号:US13184976
申请日:2011-07-18
申请人: Masahiko NAKAYAMA , Tadashi Kai , Sumio Ikegawa , Hiroaki Yoda , Tatsuya Kishi
发明人: Masahiko NAKAYAMA , Tadashi Kai , Sumio Ikegawa , Hiroaki Yoda , Tatsuya Kishi
IPC分类号: H01L29/82
CPC分类号: H01L43/08 , G11C11/161 , G11C11/1675 , H01L27/226
摘要: A magnetoresistance effect element includes: a first ferromagnetic layer having invariable magnetization perpendicular to a film plane; a second ferromagnetic layer having variable magnetization perpendicular to the film plane; a first nonmagnetic layer interposed between the first ferromagnetic layer and the second ferromagnetic layer; a third ferromagnetic layer provided on an opposite side of the second ferromagnetic layer from the first nonmagnetic layer, and having variable magnetization parallel to the film plane; and a second nonmagnetic layer interposed between the second and third ferromagnetic layers. Spin-polarized electrons are injected into the second ferromagnetic layer by flowing a current in the direction perpendicular to the film planes between the first and third ferromagnetic layers, precession movement is induced in the magnetization of the third ferromagnetic layer by injecting the spin-polarized electrons, and a microwave magnetic field of a frequency corresponding to the precession movement is applied to the second ferromagnetic layer.
摘要翻译: 磁阻效应元件包括:具有垂直于膜平面的不变磁化的第一铁磁层; 具有垂直于膜平面的可变磁化的第二铁磁层; 介于所述第一铁磁层和所述第二铁磁层之间的第一非磁性层; 第三铁磁层,其设置在所述第二铁磁层的与所述第一非磁性层相反的一侧上,并且具有与所述膜平面平行的可变磁化强度; 以及插入在第二和第三铁磁层之间的第二非磁性层。 通过在垂直于第一和第三铁磁层之间的膜平面的方向上流动电流,将旋转极化电子注入到第二铁磁层中,通过注入自旋极化电子在第三铁磁层的磁化中引起进动运动 并且将对应于进动运动的频率的微波磁场施加到第二铁磁层。
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公开(公告)号:US20100080050A1
公开(公告)日:2010-04-01
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
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。
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公开(公告)号:US20150069558A1
公开(公告)日:2015-03-12
申请号:US14203249
申请日:2014-03-10
申请人: Masahiko NAKAYAMA , Tadashi KAI , Masaru TOKO , Hiroaki YODA , Hyung Suk LEE , Jae Geun OH , Choon Kun RYU , Min Suk LEE
发明人: Masahiko NAKAYAMA , Tadashi KAI , Masaru TOKO , Hiroaki YODA , Hyung Suk LEE , Jae Geun OH , Choon Kun RYU , Min Suk LEE
CPC分类号: H01L43/02 , G11C11/15 , G11C11/16 , G11C11/161 , G11C11/1659 , G11C11/5607 , H01L27/222 , H01L27/228 , H01L27/2463 , H01L43/08 , H01L43/10 , H01L43/12 , H01L45/04
摘要: According to one embodiment, a magnetic memory is disclosed. The memory includes a conductive layer containing a first metal material, a stacked body above the conductive layer, and including a first magnetization film containing a second metal material, a second magnetization film, and a tunnel barrier layer between the first magnetization film and the second magnetization film, and an insulating layer on a side face of the stacked body, and containing an oxide of the first metal material. The first magnetization film and/or the second magnetization film includes a first region positioned in a central portion, and a second region positioned in an edge portion and containing As, P, Ge, Ga, Sb, In, N, Ar, He, F, Cl, Br, I, Si, B, C, O, Zr, Tb, S, Se, or Ti.
摘要翻译: 根据一个实施例,公开了一种磁存储器。 该存储器包括一个包含第一金属材料的导电层,在该导电层上方的层叠体,并且包括一个第一磁化膜,该第一磁化膜含有第二金属材料,第二磁化膜和第一磁化膜与第二磁化膜之间的隧道势垒层 磁化膜和层叠体的侧面上的绝缘层,并且含有第一金属材料的氧化物。 第一磁化膜和/或第二磁化膜包括位于中心部分的第一区域和位于边缘部分中并且包含As,P,Ge,Ga,Sb,In,N,Ar,He的第二区域, F,Cl,Br,I,Si,B,C,O,Zr,Tb,S,Se或Ti。
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公开(公告)号:US20120243305A1
公开(公告)日:2012-09-27
申请号:US13432626
申请日:2012-03-28
CPC分类号: H01L43/08 , G11C11/161 , H01L27/228
摘要: According to one embodiment, a magnetoresistance effect element includes first and second magnetic layers having an axis of easy magnetization in a direction perpendicular to a film surface, a first nonmagnetic layer formed between the first and second magnetic layers, a first interface magnetic layer formed between the first magnetic layer and the first nonmagnetic layer, and a second nonmagnetic layer formed in the first interface magnetic layer and having an amorphous structure. An electric current flowing through the first magnetic layer, the first nonmagnetic layer, and the second magnetic layer makes a magnetization direction in the first magnetic layer variable.
摘要翻译: 根据一个实施例,磁阻效应元件包括在垂直于膜表面的方向上具有容易磁化的轴的第一和第二磁性层,形成在第一和第二磁性层之间的第一非磁性层,形成在第一和第二磁性层之间的第一界面磁性层 第一磁性层和第一非磁性层,以及形成在第一界面磁性层中并具有非晶结构的第二非磁性层。 流过第一磁性层,第一非磁性层和第二磁性层的电流使第一磁性层中的磁化方向变化。
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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。
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