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公开(公告)号:US09293695B2
公开(公告)日:2016-03-22
申请号:US14160166
申请日:2014-01-21
申请人: Koji Ueda , Toshihiko Nagase , Kazuya Sawada , Youngmin Eeh , Daisuke Watanabe , Hiroaki Yoda
发明人: Koji Ueda , Toshihiko Nagase , Kazuya Sawada , Youngmin Eeh , Daisuke Watanabe , Hiroaki Yoda
CPC分类号: H01L43/10 , H01L27/228 , H01L43/02 , H01L43/08
摘要: According to one embodiment, a magnetoresistive element comprises a first magnetic layer, a second magnetic layer, a first nonmagnetic layer, a second nonmagnetic layer, and a third magnetic layer. The first magnetic layer has a variable magnetization direction. The second magnetic layer has an invariable magnetization direction and includes a nonmagnetic material film and a magnetic material film. The first nonmagnetic layer is arranged between the first magnetic layer and the second magnetic layer. The second nonmagnetic layer is arranged on a surface of the second magnetic layer. The third magnetic layer is arranged on a surface of the second nonmagnetic layer. The second nonmagnetic layer is in contact with the nonmagnetic material film included in the second magnetic layer.
摘要翻译: 根据一个实施例,磁阻元件包括第一磁性层,第二磁性层,第一非磁性层,第二非磁性层和第三磁性层。 第一磁性层具有可变的磁化方向。 第二磁性层具有不变的磁化方向,并且包括非磁性材料膜和磁性材料膜。 第一非磁性层布置在第一磁性层和第二磁性层之间。 第二非磁性层布置在第二磁性层的表面上。 第三磁性层布置在第二非磁性层的表面上。 第二非磁性层与包含在第二磁性层中的非磁性材料膜接触。
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公开(公告)号:US09184374B2
公开(公告)日:2015-11-10
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:US09130143B2
公开(公告)日:2015-09-08
申请号:US14201038
申请日:2014-03-07
申请人: Toshihiko Nagase , Daisuke Watanabe , Kazuya Sawada , Koji Ueda , Youngmin Eeh , Hiroaki Yoda
发明人: Toshihiko Nagase , Daisuke Watanabe , Kazuya Sawada , Koji Ueda , Youngmin Eeh , Hiroaki Yoda
CPC分类号: H01L43/02 , G11C11/161 , H01L27/222 , H01L43/08 , H01L43/12
摘要: According to one embodiment, a magnetic memory is disclosed. The magnetic memory includes a substrate, and a magnetoresistive element provided on the substrate. The magnetoresistive element includes a first magnetic layer, a tunnel barrier layer on the first magnetic layer, and a second magnetic layer on the tunnel barrier layer. The first magnetic layer or the second magnetic layer includes a first region, second region, and third region whose ratios of crystalline portion are higher in order closer to the tunneling barrier.
摘要翻译: 根据一个实施例,公开了一种磁存储器。 磁存储器包括衬底和设置在衬底上的磁阻元件。 磁阻元件包括第一磁性层,第一磁性层上的隧道势垒层和隧道势垒层上的第二磁性层。 第一磁性层或第二磁性层包括第一区域,第二区域和第三区域,其结晶部分的比例更接近隧道势垒。
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公开(公告)号:US08705269B2
公开(公告)日:2014-04-22
申请号:US13232782
申请日:2011-09-14
申请人: Toshihiko Nagase , Tadashi Kai , Makoto Nagamine , Katsuya Nishiyama , Eiji Kitagawa , Tadaomi Daibou , Koji Ueda , Hiroaki Yoda , Kay Yakushiji , Shinji Yuasa , Hitoshi Kubota , Taro Nagahama , Akio Fukushima , Koji Ando
发明人: Toshihiko Nagase , Tadashi Kai , Makoto Nagamine , Katsuya Nishiyama , Eiji Kitagawa , Tadaomi Daibou , Koji Ueda , Hiroaki Yoda , Kay Yakushiji , Shinji Yuasa , Hitoshi Kubota , Taro Nagahama , Akio Fukushima , Koji Ando
IPC分类号: G11C11/16
CPC分类号: H01L27/228 , G11C11/161 , H01L43/08 , H01L43/10
摘要: A magnetoresistive element according to an embodiment includes: a first and second magnetic layers having an easy axis of magnetization in a direction perpendicular to a film plane; and a first nonmagnetic layer interposed between the first and second magnetic layers, at least one of the first and second magnetic layers including a structure formed by stacking a first and second magnetic films, the second magnetic film being located closer to the first nonmagnetic layer, the second magnetic film including a structure formed by repeating stacking of a magnetic material layer and a nonmagnetic material layer at least twice, the nonmagnetic material layers of the second magnetic film containing at least one element selected from the group consisting of Ta, W, Hf, Zr, Nb, Mo, Ti, V, and Cr, one of the first and second magnetic layers having a magnetization direction that is changed by applying a current.
摘要翻译: 根据实施例的磁阻元件包括:在垂直于膜平面的方向上具有易磁化轴的第一和第二磁性层; 以及介于所述第一和第二磁性层之间的第一非磁性层,所述第一和第二磁性层中的至少一个包括通过堆叠第一和第二磁性膜形成的结构,所述第二磁性膜位于更靠近所述第一非磁性层的位置, 所述第二磁性膜包括通过将磁性材料层和非磁性材料层重复堆叠至少两次形成的结构,所述第二磁性膜的非磁性材料层含有选自Ta,W,Hf中的至少一种元素 ,Zr,Nb,Mo,Ti,V和Cr中的一种,所述第一和第二磁性层之一具有通过施加电流而改变的磁化方向。
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公开(公告)号:US08502331B2
公开(公告)日:2013-08-06
申请号:US13234720
申请日:2011-09-16
申请人: Eiji Kitagawa , Tadaomi Daibou , Yutaka Hashimoto , Masaru Tokou , Tadashi Kai , Makoto Nagamine , Toshihiko Nagase , Katsuya Nishiyama , Koji Ueda , Hiroaki Yoda , Kay Yakushiji , Shinji Yuasa , Hitoshi Kubota , Taro Nagahama , Akio Fukushima , Koji Ando
发明人: Eiji Kitagawa , Tadaomi Daibou , Yutaka Hashimoto , Masaru Tokou , Tadashi Kai , Makoto Nagamine , Toshihiko Nagase , Katsuya Nishiyama , Koji Ueda , Hiroaki Yoda , Kay Yakushiji , Shinji Yuasa , Hitoshi Kubota , Taro Nagahama , Akio Fukushima , Koji Ando
IPC分类号: H01L29/82
CPC分类号: H01L43/10 , B82Y40/00 , G11C11/161 , H01F10/133 , H01F10/3286 , H01F41/307 , H01L27/228 , H01L29/82 , H01L43/08 , H01L43/12
摘要: According to one embodiment, a magnetoresistive effect element includes a first magnetic layer including perpendicular anisotropy to a film surface and an invariable magnetization direction, the first magnetic layer having a magnetic film including an element selected from a first group including Tb, Gd, and Dy and an element selected from a second group including Co and Fe, a second magnetic layer including perpendicular magnetic anisotropy to the film surface and a variable magnetization direction, and a nonmagnetic layer between the first magnetic layer and the second magnetic layer. The magnetic film includes amorphous phases and crystals whose particle sizes are 0.5 nm or more.
摘要翻译: 根据一个实施例,磁阻效应元件包括第一磁性层,其包括对膜表面的垂直各向异性和不变的磁化方向,第一磁性层具有包括从包括Tb,Gd和Dy的第一组中选择的元素的磁性膜 以及从包括Co和Fe的第二组中选择的元素,对膜表面具有垂直磁各向异性的第二磁性层和可变磁化方向,以及在第一磁性层和第二磁性层之间的非磁性层。 磁性膜包括非晶相和粒径为0.5nm以上的晶体。
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公开(公告)号:US08750029B2
公开(公告)日:2014-06-10
申请号:US13233420
申请日:2011-09-15
申请人: Eiji Kitagawa , Tadaomi Daibou , Tadashi Kai , Toshihiko Nagase , Katsuya Nishiyama , Koji Ueda , Hiroaki Yoda
发明人: Eiji Kitagawa , Tadaomi Daibou , Tadashi Kai , Toshihiko Nagase , Katsuya Nishiyama , Koji Ueda , Hiroaki Yoda
CPC分类号: H01L27/228 , G11C11/161 , H01L43/08
摘要: According to one embodiment, a magnetoresistive effect element includes a recording layer including ferromagnetic material with perpendicular magnetic anisotropy to a film surface and a variable orientation of magnetization, a reference layer including ferromagnetic material with perpendicular magnetic anisotropy to a film surface and an invariable orientation of magnetization, a nonmagnetic layer between the recording layer and the reference layer, a first underlayer on a side of the recoding layer opposite to a side on which the nonmagnetic layer is provided, and a second underlayer between the recording layer and the first underlayer. The second underlayer is a Pd film including a concentration of 3×1015 atms/cm2.
摘要翻译: 根据一个实施例,磁阻效应元件包括记录层,其包括对膜表面具有垂直磁各向异性的铁磁材料和磁化的可变取向,包括具有垂直磁性各向异性的铁磁材料的参考层和膜表面的不变取向 磁化,记录层和参考层之间的非磁性层,与记录层和第一底层之间的第二底层与编码层的与设置非磁性层的一侧相反的一侧的第一底层。 第二底层是包含浓度为3×1015atms / cm 2的Pd膜。
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公开(公告)号:US20120069640A1
公开(公告)日:2012-03-22
申请号:US13232782
申请日:2011-09-14
申请人: Toshihiko Nagase , Tadashi Kai , Makoto Nagamine , Katsuya Nishiyama , Eiji Kitagawa , Tadaomi Daibou , Koji Ueda , Hiroaki Yoda , Kay Yakushiji , Shinji Yuasa , Hitoshi Kubota , Taro Nagahama , Akio Fukushima , Koji Ando
发明人: Toshihiko Nagase , Tadashi Kai , Makoto Nagamine , Katsuya Nishiyama , Eiji Kitagawa , Tadaomi Daibou , Koji Ueda , Hiroaki Yoda , Kay Yakushiji , Shinji Yuasa , Hitoshi Kubota , Taro Nagahama , Akio Fukushima , Koji Ando
IPC分类号: G11C11/16
CPC分类号: H01L27/228 , G11C11/161 , H01L43/08 , H01L43/10
摘要: A magnetoresistive element according to an embodiment includes: a first and second magnetic layers having an easy axis of magnetization in a direction perpendicular to a film plane; and a first nonmagnetic layer interposed between the first and second magnetic layers, at least one of the first and second magnetic layers including a structure formed by stacking a first and second magnetic films, the second magnetic film being located closer to the first nonmagnetic layer, the second magnetic film including a structure formed by repeating stacking of a magnetic material layer and a nonmagnetic material layer at least twice, the nonmagnetic material layers of the second magnetic film containing at least one element selected from the group consisting of Ta, W, Hf, Zr, Nb, Mo, Ti, V, and Cr, one of the first and second magnetic layers having a magnetization direction that is changed by applying a current.
摘要翻译: 根据实施例的磁阻元件包括:在垂直于膜平面的方向上具有易磁化轴的第一和第二磁性层; 以及介于所述第一和第二磁性层之间的第一非磁性层,所述第一和第二磁性层中的至少一个包括通过堆叠第一和第二磁性膜形成的结构,所述第二磁性膜位于更靠近所述第一非磁性层的位置, 所述第二磁性膜包括通过将磁性材料层和非磁性材料层重复堆叠至少两次形成的结构,所述第二磁性膜的非磁性材料层含有选自Ta,W,Hf中的至少一种元素 ,Zr,Nb,Mo,Ti,V和Cr中的一种,所述第一和第二磁性层之一具有通过施加电流而改变的磁化方向。
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公开(公告)号:US20130020659A1
公开(公告)日:2013-01-24
申请号:US13628724
申请日:2012-09-27
申请人: Tadaomi Daibou , Eiji Kitagawa , Yutaka Hashimoto , Masaru Tokou , Toshihiko Nagase , Katsuya Nishiyama , Koji Ueda , Makoto Nagamine , Tadashi Kai , Hiroaki Yoda
发明人: Tadaomi Daibou , Eiji Kitagawa , Yutaka Hashimoto , Masaru Tokou , Toshihiko Nagase , Katsuya Nishiyama , Koji Ueda , Makoto Nagamine , Tadashi Kai , Hiroaki Yoda
IPC分类号: H01L29/82
CPC分类号: H01L43/08 , H01L27/228 , H01L43/10
摘要: A magnetoresistive element according to an embodiment includes: a first ferromagnetic layer having an axis of easy magnetization in a direction perpendicular to a film plane; a second ferromagnetic layer having an axis of easy magnetization in a direction perpendicular to a film plane; a nonmagnetic layer placed between the first ferromagnetic layer and the second ferromagnetic layer; a first interfacial magnetic layer placed between the first ferromagnetic layer and the nonmagnetic layer; and a second interfacial magnetic layer placed between the second ferromagnetic layer and the nonmagnetic layer. The first interfacial magnetic layer includes a first interfacial magnetic film, a second interfacial magnetic film placed between the first interfacial magnetic film and the nonmagnetic layer and having a different composition from that of the first interfacial magnetic film, and a first nonmagnetic film placed between the first interfacial magnetic film and the second interfacial magnetic film.
摘要翻译: 根据实施例的磁致电阻元件包括:在垂直于膜平面的方向上具有容易磁化的轴的第一铁磁层; 第二铁磁层,其在垂直于膜平面的方向上具有容易磁化的轴; 放置在第一铁磁层和第二铁磁层之间的非磁性层; 置于第一铁磁层和非磁性层之间的第一界面磁性层; 以及置于第二铁磁层和非磁性层之间的第二界面磁性层。 第一界面磁性层包括第一界面磁性膜,位于第一界面磁性膜和非磁性层之间并具有与第一界面磁性膜不同的组成的第二界面磁性膜,以及位于第一界面磁性膜之间的第一非磁性膜 第一界面磁性膜和第二界面磁性膜。
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公开(公告)号:US09018719B2
公开(公告)日:2015-04-28
申请号:US13424301
申请日:2012-03-19
申请人: Katsuya Nishiyama , Hisanori Aikawa , Tadashi Kai , Toshihiko Nagase , Koji Ueda , Hiroaki Yoda
发明人: Katsuya Nishiyama , Hisanori Aikawa , Tadashi Kai , Toshihiko Nagase , Koji Ueda , Hiroaki Yoda
CPC分类号: G11C11/16 , G11C11/161 , G11C11/1675 , H01L27/228 , H01L43/08
摘要: According to one embodiment, a magnetoresistive element includes a storage layer having a perpendicular and variable magnetization, a reference layer having a perpendicular and invariable magnetization, a shift adjustment layer having a perpendicular and invariable magnetization in a direction opposite to a magnetization of the reference layer, a first nonmagnetic layer between the storage layer and the reference layer, and a second nonmagnetic layer between the reference layer and the shift adjustment layer. A switching magnetic field of the reference layer is equal to or smaller than a switching magnetic field of the storage layer, and a magnetic relaxation constant of the reference layer is larger than a magnetic relaxation constant of the storage layer.
摘要翻译: 根据一个实施例,磁阻元件包括具有垂直和可变磁化的存储层,具有垂直和不变磁化的参考层,在与参考层的磁化相反的方向上具有垂直和不变磁化的位移调整层 存储层和参考层之间的第一非磁性层,以及参考层和位移调整层之间的第二非磁性层。 参考层的开关磁场等于或小于存储层的切换磁场,并且参考层的磁性松弛常数大于存储层的磁性松弛常数。
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公开(公告)号:US20120069642A1
公开(公告)日:2012-03-22
申请号:US13236589
申请日:2011-09-19
申请人: Koji Ueda , Tadashi Kai , Toshihiko Nagase , Katsuya Nishiyama , Eiji Kitagawa , Tadaomi Daibou , Makoto Nagamine , Hiroaki Yoda
发明人: Koji Ueda , Tadashi Kai , Toshihiko Nagase , Katsuya Nishiyama , Eiji Kitagawa , Tadaomi Daibou , Makoto Nagamine , Hiroaki Yoda
CPC分类号: H01L43/08 , G11C11/16 , G11C11/1659 , H01F10/123 , H01F10/3254 , H01F10/3263 , H01F10/3286 , H01L43/10
摘要: According to one embodiment, a magnetoresistive element includes an electrode layer, a first magnetic layer, a second magnetic layer and a nonmagnetic layer. The electrode layer includes a metal layer including at least one of Mo, Nb, and W. The first magnetic layer is disposed on the metal layer to be in contact with the metal layer and has a magnetization easy axis in a direction perpendicular to a film plane and is variable in magnetization direction. The second magnetic layer is disposed on the first magnetic layer and has a magnetization easy axis in the direction perpendicular to the film plane and is invariable in magnetization direction. The nonmagnetic layer is provided between the first and second magnetic layers. The magnetization direction of the first magnetic layer is varied by a current that runs through the first magnetic layer, the nonmagnetic layer, and the second magnetic layer.
摘要翻译: 根据一个实施例,磁阻元件包括电极层,第一磁性层,第二磁性层和非磁性层。 电极层包括包括Mo,Nb和W中的至少一种的金属层。第一磁性层设置在与金属层接触的金属层上,并且在垂直于膜的方向上具有易磁化轴 平面,并且在磁化方向上是可变的。 第二磁性层设置在第一磁性层上,并且在垂直于膜平面的方向上具有易磁化轴,并且在磁化方向上是不变的。 非磁性层设置在第一和第二磁性层之间。 第一磁性层的磁化方向由穿过第一磁性层,非磁性层和第二磁性层的电流而变化。
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