公开(公告)号：US06928724B2

公开(公告)日：2005-08-16

申请号：US10793838

申请日：2004-03-08

申请人： Susumu Hashimoto ,  Yuichi Ohsawa ,  Michiko Hara

发明人： Susumu Hashimoto ,  Yuichi Ohsawa ,  Michiko Hara

IPC分类号： G01R33/09 ,  G11B5/39 ,  H01L43/08 ,  H01L43/12 ,  G11B5/127 ,  H04R31/00

CPC分类号： H01L43/12 ,  Y10T29/49032

摘要： There is provided a magnetoresistance effect element which is capable of causing a large sense current to flow between electrodes and which has a smaller dispersion in direction of magnetization of a CPP element based on a magnetic field due to the sense current and has a lager reproducing output, and a method for producing the same. The magnetoresistance effect element is produced by: after forming a first electrode, forming a magnetoresistance effect film on the first electrode; applying a self-condensing organic resist on the magnetoresistance effect film, and thereafter, causing the organic resist to be droplets; subsequently, forming an insulating film thereon, and thereafter, removing the organic resist to form a groove portion in the insulating film to expose the top surface of the magnetoresistance effect film; and filling the groove portion with an electrode material to form a second electrode.

摘要翻译： 提供了一种磁电阻效应元件，其能够导致大的感测电流在电极之间流动，并且由于感测电流而基于磁场具有较小的CPP元件的磁化方向的偏移，并且具有较大的再现输出 ，及其制造方法。 磁阻效应元件通过以下方式产生：在形成第一电极之后，在第一电极上形成磁阻效应膜; 在磁阻效应膜上施加自凝聚有机抗蚀剂，然后使有机抗蚀剂成为液滴; 随后在其上形成绝缘膜，然后除去有机抗蚀剂以在绝缘膜中形成沟槽部分以暴露磁阻效应膜的顶表面; 并用电极材料填充槽部分以形成第二电极。

公开(公告)号：US20050069732A1

公开(公告)日：2005-03-31

申请号：US10947132

申请日：2004-09-23

申请人： Yoshiyuki Kamata ,  Yuichi Ohsawa ,  Hiroyuki Hieda ,  Akira Kikitsu

发明人： Yoshiyuki Kamata ,  Yuichi Ohsawa ,  Hiroyuki Hieda ,  Akira Kikitsu

IPC分类号： G11B5/72 ,  G11B5/00 ,  G11B5/65 ,  G11B5/667 ,  G11B5/74 ,  G11B5/855 ,  B32B5/16

CPC分类号： B82Y10/00 ,  G11B5/74 ,  G11B5/743 ,  G11B5/855 ,  G11B2005/001 ,  Y10T428/256 ,  Y10T428/265

摘要： A magnetic recording medium which allows high density recording and has excellent durability can be obtained. A magnetic recording medium includes: a plurality of ferromagnetic material dots arranged on a soft magnetic layer formed on a non-magnetic substrate so as to be separated from one another; and carbon films which are formed on the respective ferromagnetic material dots, each carbon film having a smooth film face shape in a section passing through the center of each ferromagnetic material dot and a film thickness gradually decreasing from the center of the ferromagnetic material dot toward an outer edge thereof.

摘要翻译： 可以获得允许高密度记录并具有优异的耐久性的磁记录介质。 磁记录介质包括：多个铁磁材料点，其布置在形成在非磁性基板上以便彼此分离的软磁层上; 和形成在各个铁磁材料点上的碳膜，每个碳膜在穿过每个铁磁材料点的中心的部分中具有平滑的薄膜表面形状，并且薄膜厚度从铁磁材料点的中心逐渐减小到 的外边缘。

公开(公告)号：US06369992B1

公开(公告)日：2002-04-09

申请号：US08909687

申请日：1997-08-12

申请人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Hitoshi Iwasaki ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Tadahiko Kobayashi

发明人： Hiroaki Yoda ,  Atsuhito Sawabe ,  Hitoshi Iwasaki ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Tadahiko Kobayashi

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3977 ,  G11B2005/3996

摘要： A magneto-resistance effect head records and reproduces recorded magnetic material. The magneto-resistance effect head has a magneto-resistance effect film connected to a pair of leads. Additionally, a magnetic yoke, with a first and second magnetic yoke member, directs a signal magnetic field from a recording medium to the magneto-resistance effect film. The magneto-resistance effect head is constructed such that the first and second magnetic yoke members have surfaces that face the recording medium. The surfaces of the first and second magnetic yoke members have a magnetic gap between them. Additionally, the magneto-resistance effect film is recessed from the medium facing surfaces by a predetermined distance. Moreover, the first and second magnetic yoke members are aligned almost in parallel with the magnetic flux flow from the recording medium to the first magnetic yoke member, the magneto-resistance effect film, and the second magnetic yoke member.

摘要翻译： 磁阻效应头记录和再现记录的磁性材料。 磁阻效应头具有连接到一对引线的磁阻效应膜。 此外，具有第一和第二磁轭构件的磁轭将来自记录介质的信号磁场引导到磁阻效应膜。 磁阻效应头被构造成使得第一和第二磁轭构件具有面向记录介质的表面。 第一和第二磁轭构件的表面之间具有磁隙。 此外，磁阻效应膜从面向介质的表面凹陷预定距离。 此外，第一和第二磁轭构件几乎与从记录介质到第一磁轭构件，磁阻效应膜和第二磁轭构件的磁通流平行排列。

公开(公告)号：US06256171B1

公开(公告)日：2001-07-03

申请号：US08937183

申请日：1997-09-29

申请人： Hiroaki Yoda ,  Akio Hori ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Masatoshi Yoshikawa ,  Miki Mori

发明人： Hiroaki Yoda ,  Akio Hori ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Masatoshi Yoshikawa ,  Miki Mori

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/10 ,  G11B5/105 ,  G11B5/3106 ,  G11B5/3967 ,  G11B5/40 ,  G11B2005/3996 ,  Y10S977/934

摘要： A thin film magnetic head has a reproducing element or/and recording element which is held from the direction of its thickness between a first ceramic substrate and a second ceramic substrate. The reproducing element or/and recording element is positioned at substantially the center with respect to the direction of track width. The first and second ceramic substrates hold the reproducing element or/and recording element from, for example, the direction of track width. The reproducing element or/and recording element is provided with a yoke type reproducing part which has at least one pair of magnetic cores with a magnetic gap therebetween on the side of a medium opposed face and a magnetoresistance effect element to which a signal magnetic flux from a magnetic recording medium is led through the pair of magnetic cores. Heat due to a sense current and heat due to the contact between the reproducing element or/and recording element and the magnetic recording medium are efficiently dissipated to the first and second ceramic substrates, thereby retarding a temperature increase of the reproducing element or/and recording element. Abrasion in the neighborhood of the reproducing element or/and recording element is retarded by the first and second ceramic substrates. A magnetic recording apparatus is provided with a magnetic recording medium, and a magnetic head slider having the thin film magnetic head described above.

摘要翻译： 薄膜磁头具有从第一陶瓷基板和第二陶瓷基板之间的厚度方向保持的再现元件或/和记录元件。 再现元件或/和记录元件相对于轨道宽度的方向基本上位于中心。 第一和第二陶瓷衬底从例如轨道宽度的方向保持再现元件或/和记录元件。 再现元件或/和记录元件设置有磁轭式再现部件，该磁轭式再现部件在介质相对面侧具有至少一对磁芯，其间具有磁隙，并且磁阻效应元件具有来自 磁记录介质被引导通过一对磁芯。 由于由于再现元件或/和记录元件与磁记录介质之间的接触而产生的感测电流和热的热量被有效地耗散到第一和第二陶瓷基板，从而延迟再现元件的温度升高或/和记录 元件。 在再现元件或/和记录元件附近的磨损被第一和第二陶瓷衬底延迟。 具有磁记录介质的磁记录装置和具有上述薄膜磁头的磁头滑块。

公开(公告)号：US06172858B2

公开(公告)日：2001-01-09

申请号：US09479651

申请日：2000-01-07

申请人： Hiroaki Yoda ,  Yuichi Ohsawa ,  Kohichi Tateyama ,  Reiko Kondoh ,  Toshihiko Ohta ,  Junichi Akiyama ,  Hitoshi Iwasaki

发明人： Hiroaki Yoda ,  Yuichi Ohsawa ,  Kohichi Tateyama ,  Reiko Kondoh ,  Toshihiko Ohta ,  Junichi Akiyama ,  Hitoshi Iwasaki

IPC分类号： G11B5127

CPC分类号： B82Y10/00 ,  B82Y25/00 ,  G11B5/1278 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3912 ,  G11B5/3919 ,  G11B5/3932 ,  G11B5/3967 ,  G11B5/399 ,  G11B2005/0016 ,  G11B2005/0018 ,  G11B2005/3996 ,  Y10T29/49025

摘要： The present invention provides a thin film head having a magnetoresistance effect element which includes at least two magnetic films, a nonmagnetic film sandwiched between the magnetic films, and leads connected to the magnetoresistance effect element wherein the width of one of the magnetic films, which essentially responds to a signal magnetic field, is not more than a distance between leads. The present invention provides a thin film head having a magnetoresistance effect element which includes at least two magnetic films and a nonmagnetic film sandwiched between the magnetic films, which makes use of a change in magnetic resistance caused by spin-dependent scattering, wherein at least a portion of one magnetic films, which essentially respond to a signal magnetic field extends in a direction same as that of the signal magnetic field.

摘要翻译： 本发明提供了一种具有磁阻效应元件的薄膜头，该磁阻效应元件包括至少两个磁性膜，夹在磁性膜之间的非磁性膜和连接到磁阻效应元件的引线，其中一个磁性膜的宽度基本上 响应信号磁场，不超过引线之间的距离。 本发明提供了具有磁阻效应元件的薄膜头，该磁阻效应元件包括至少两个磁性膜和夹在磁性膜之间的非磁性膜，其利用由自旋依赖性散射引起的磁阻的变化，其中至少一个 基本上响应于信号磁场的一个磁性膜的部分在与信号磁场的方向相同的方向上延伸。

公开(公告)号：US09082961B2

公开(公告)日：2015-07-14

申请号：US13226960

申请日：2011-09-07

申请人： Yuichi Ohsawa ,  Shigeki Takahashi ,  Junichi Ito ,  Daisuke Saida ,  Kyoichi Suguro ,  Hiroaki Yoda

发明人： Yuichi Ohsawa ,  Shigeki Takahashi ,  Junichi Ito ,  Daisuke Saida ,  Kyoichi Suguro ,  Hiroaki Yoda

IPC分类号： H01L43/12 ,  H01L29/82

CPC分类号： H01L43/12 ,  H01L29/82

摘要： According to one embodiment, a method of manufacturing a multilayer film, the method includes forming a first layer, forming a second layer on the first layer, and transcribing a crystal information of one of the first and second layers to the other one of the first and second layers by executing a GCIB-irradiation to the second layer.

摘要翻译： 根据一个实施例，一种制造多层膜的方法，该方法包括：形成第一层，在第一层上形成第二层，以及将第一层和第二层之一的晶体信息转录到第一层中的另一层 并且通过对第二层执行GCIB照射来产生第二层。

公开(公告)号：US08716817B2

公开(公告)日：2014-05-06

申请号：US13416724

申请日：2012-03-09

申请人： Daisuke Saida ,  Minoru Amano ,  Yuichi Ohsawa ,  Junichi Ito ,  Hiroaki Yoda

发明人： Daisuke Saida ,  Minoru Amano ,  Yuichi Ohsawa ,  Junichi Ito ,  Hiroaki Yoda

IPC分类号： H01L29/82

CPC分类号： H01F10/3286 ,  G11C11/16 ,  G11C11/161 ,  G11C11/1659 ,  H01F10/3236 ,  H01F10/329 ,  H01L43/08

摘要： According to one embodiment, a magnetic memory element includes a stacked body including first and second stacked units stacked with each other. The first stacked unit includes first and second ferromagnetic layers and a first nonmagnetic layer provided therebetween. The second stacked unit includes third and fourth ferromagnetic layers and a second nonmagnetic layer provided therebetween. Magnetization of the second and third ferromagnetic layers are variable. Magnetizations of the first and fourth ferromagnetic layers are fixed in a direction perpendicular to the layer surfaces. A cross-sectional area of the third ferromagnetic layer is smaller than a cross-sectional area of the first stacked unit when cut along a plane perpendicular to the stacking direction.

摘要翻译： 根据一个实施例，磁存储元件包括堆叠体，其包括彼此堆叠的第一和第二堆叠单元。 第一堆叠单元包括第一和第二铁磁层和设置在它们之间的第一非磁性层。 第二堆叠单元包括第三和第四铁磁层和设置在它们之间的第二非磁性层。 第二和第三铁磁层的磁化是可变的。 第一和第四铁磁层的磁化在垂直于层表面的方向固定。 当沿垂直于堆叠方向的平面切割时，第三铁磁层的横截面面积小于第一堆叠单元的横截面面积。

公开(公告)号：US08710605B2

公开(公告)日：2014-04-29

申请号：US13231894

申请日：2011-09-13

申请人： Shigeki Takahashi ,  Yuichi Ohsawa ,  Junichi Ito ,  Chikayoshi Kamata ,  Saori Kashiwada ,  Minoru Amano ,  Hiroaki Yoda

发明人： Shigeki Takahashi ,  Yuichi Ohsawa ,  Junichi Ito ,  Chikayoshi Kamata ,  Saori Kashiwada ,  Minoru Amano ,  Hiroaki Yoda

IPC分类号： H01L29/72

CPC分类号： H01L43/12 ,  H01L27/228 ,  H01L43/08 ,  H01L43/10

摘要： A magnetic memory according to an embodiment includes: at least one memory cell comprising a magnetoresistive element as a memory element, and first and second electrodes that energize the magnetoresistive element. The magnetoresistive element includes: a first magnetic layer having a variable magnetization direction perpendicular to a film plane; a tunnel barrier layer on the first magnetic layer; and a second magnetic layer on the tunnel barrier layer, and having a fixed magnetization direction perpendicular to the film plane. The first magnetic layer including: a first region; and a second region outside the first region so as to surround the first region, and having a smaller perpendicular magnetic anisotropy energy than that of the first region. The second magnetic layer including: a third region; and a fourth region outside the third region, and having a smaller perpendicular magnetic anisotropy energy than that of the third region.

摘要翻译： 根据实施例的磁存储器包括：包括作为存储元件的磁阻元件的至少一个存储单元，以及激励磁阻元件的第一和第二电极。 磁阻元件包括：具有与膜平面垂直的可变磁化方向的第一磁性层; 在第一磁性层上的隧道阻挡层; 以及隧道势垒层上的第二磁性层，并且具有与膜平面垂直的固定的磁化方向。 所述第一磁性层包括：第一区域; 以及围绕第一区域的第一区域外的第二区域，并且具有比第一区域小的垂直磁各向异性能量。 第二磁性层包括：第三区域; 以及第三区域外的第四区域，并且具有比第三区域小的垂直磁各向异性能量。

公开(公告)号：US08419412B2

公开(公告)日：2013-04-16

申请号：US13422897

申请日：2012-03-16

申请人： Yuichi Ohsawa ,  Junichi Ito ,  Tomotaka Ariga ,  Yoshinari Kurosaki ,  Saori Kashiwada

发明人： Yuichi Ohsawa ,  Junichi Ito ,  Tomotaka Ariga ,  Yoshinari Kurosaki ,  Saori Kashiwada

IPC分类号： B29C59/00

CPC分类号： B29C59/022 ,  B29C2059/023 ,  Y10T428/24355

摘要： According to one embodiment, a nano-imprint mold includes plural pairs of first and second protrusions formed on a base layer, each of which is formed along the same straight line. Each protrusion has a top surface and four side surfaces. The first and second protrusions are mirror-symmetrical with each other. A first side surface of the first protrusion and a second side surface of the second protrusion face each other. A first angle between the first side surface or the second side surface and a main surface of the base layer is not less than 85° and not more than 90°. A second angle between a third side surface in the first protrusion or a fourth side surface in the second protrusion and the main surface of the base layer is not less than 70° and not more than 88°. The first angle is larger than the second angle.

摘要翻译： 根据一个实施例，纳米压印模具包括形成在基底层上的多对第一和第二突起，其中每一个沿着相同的直线形成。 每个突起具有顶表面和四个侧表面。 第一和第二突起彼此镜像对称。 第一突起的第一侧表面和第二突起的第二侧表面彼此面对。 第一侧表面或第二侧表面与基层的主表面之间的第一角度不小于85°且不大于90°。 第一突起中的第三侧表面或第二突起中的第四侧表面与基底层的主表面之间的第二角度不小于70°且不大于88°。 第一角度大于第二角度。

公开(公告)号：US20130004724A1

公开(公告)日：2013-01-03

申请号：US13613667

申请日：2012-09-13

申请人： Saori Kashiwada ,  Yuichi Ohsawa ,  Junichi Ito ,  Chikayoshi Kamata ,  Yoshiyuki Kamata

发明人： Saori Kashiwada ,  Yuichi Ohsawa ,  Junichi Ito ,  Chikayoshi Kamata ,  Yoshiyuki Kamata

IPC分类号： B32B3/30 ,  B32B9/04 ,  B32B17/06

CPC分类号： G11B7/261 ,  G11B7/263 ,  Y10T428/24479 ,  Y10T428/2457 ,  Y10T428/24612

摘要： In one embodiment, there is provided a master for producing a stamper. The master includes: a substrate made of a first material and comprising a first surface, wherein the first surface of the substrate is formed with a groove; a first layer made of a second material and formed in the groove, wherein the second material is different from the first material, and wherein a surface of the first layer is substantially flush with the first surface of substrate; and a projection portion formed on at least one of the first surface of the substrate and the surface of the first layer. The first material is silicon and the second material is selected from silicon oxide, aluminum oxide, titanium oxide, and glass.

摘要翻译： 在一个实施例中，提供了一种用于制造压模的主机。 主机包括：由第一材料制成并包括第一表面的基板，其中基板的第一表面形成有凹槽; 由第二材料制成并形成在所述凹槽中的第一层，其中所述第二材料与所述第一材料不同，并且其中所述第一层的表面基本上与所述基板的第一表面齐平; 以及形成在所述基板的第一表面和所述第一层的表面中的至少一个上的突出部。 第一种材料是硅，第二种材料选自氧化硅，氧化铝，氧化钛和玻璃。