公开(公告)号：US20080285177A1

公开(公告)日：2008-11-20

申请号：US12105965

申请日：2008-04-18

申请人： Ryosaku Inamura ,  Isatake Kaitsu ,  Takuya Uzumaki ,  Iwao OKamoto ,  Akira Kikuchi

发明人： Ryosaku Inamura ,  Isatake Kaitsu ,  Takuya Uzumaki ,  Iwao OKamoto ,  Akira Kikuchi

IPC分类号： G11B5/33

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/66

摘要： According to an aspect of an embodiment, a magnetic recording medium includes a substrate, and a first granular layer formed over the substrate, the first granular layer having a plurality of first magnetic particles and Si oxide separating the plurality of first magnetic particles. The magnetic recording medium further includes a second granular layer formed over the first granular layer, the second granular layer having a plurality of second magnetic particles and Ti oxide separating the plurality of second magnetic particles.

摘要翻译： 根据实施例的一个方面，磁记录介质包括基板和形成在基板上的第一颗粒层，第一颗粒层具有多个第一磁性颗粒和分离多个第一磁性颗粒的氧化硅。 磁记录介质还包括形成在第一颗粒层上的第二颗粒层，第二颗粒层具有多个第二磁性颗粒和分离多个第二磁性颗粒的Ti氧化物。

公开(公告)号：US07428130B2

公开(公告)日：2008-09-23

申请号：US11410315

申请日：2006-04-25

申请人： Arata Jogo ,  Hirotaka Oshima ,  Takahiro Ibusuki ,  Yutaka Shimizu ,  Takuya Uzumaki

发明人： Arata Jogo ,  Hirotaka Oshima ,  Takahiro Ibusuki ,  Yutaka Shimizu ,  Takuya Uzumaki

IPC分类号： G11B5/39

CPC分类号： H01F10/3254 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11C11/16 ,  H01F10/3263 ,  H01F10/3272 ,  H01F10/3281 ,  H01L43/08

摘要： A CPP-type magnetoresistive element including a fixed magnetization layer, a non-magnetic metal layer, and a free magnetization layer that are stacked, and a diffusion prevention layer is disclosed. The free magnetization layer includes CoMnAl. The diffusion prevention layer is provided between the non-magnetic metal layer and the free magnetization layer so as to prevent Mn included in the free magnetization layer from diffusing into the non-magnetic metal layer. CoMnAl has a composition within the area formed by connecting Point A (44, 23, 33), Point B (48, 25, 27), Point C (60, 20, 20), Point D (65, 15, 20), Point E (65, 10, 25), Point F (60, 10, 30), and Point A with straight lines in this order in a ternary composition diagram where coordinates of the composition are expressed as (Co content, Mn content, Al content) with each of the Co, Mn, and Al contents being expressed in atomic percentage.

摘要翻译： 包括堆叠的固定磁化层，非磁性金属层和自由磁化层的CPP型磁阻元件，以及扩散防止层。 自由磁化层包括CoMnAl。 在非磁性金属层和自由磁化层之间设置扩散防止层，以防止包含在自由磁化层中的Mn扩散到非磁性金属层。 CoMnAl具有通过连接点A（44,23,33），点B（48,25,27），点C（60,20,20），点D（65,15,20）， 点E（65,10,25），点F（60,10,30），点A以直线表示，其组成的坐标表示为（Co含量，Mn含量，Al 含量），其中Co，Mn和Al中的每一种以原子百分比表示。

公开(公告)号：US07422808B2

公开(公告)日：2008-09-09

申请号：US10938259

申请日：2004-09-10

申请人： Toshio Sugimoto ,  Takuya Uzumaki ,  Atsushi Tanaka

发明人： Toshio Sugimoto ,  Takuya Uzumaki ,  Atsushi Tanaka

IPC分类号： G11B5/667

CPC分类号： G11B5/667 ,  G11B5/7325 ,  G11B5/8404

摘要： A vertical magnetic recording medium includes a substrate, a soft magnetic backing layer formed on the substrate, a magnetic flux confinement layer formed on the soft magnetic backing layer, an intermediate layer formed on the magnetic flux confinement layer, and a recording layer of a vertical magnetization film formed on the intermediate layer. The magnetic flux confinement layer has a plurality of soft magnetic parts each formed along a track region of plural track regions and a non-magnetic parts formed between adjacent track regions. The intermediate layer is formed of a non-magnetic material and is formed so as to cover a surface of the soft magnetic part and the non-magnetic parts.

摘要翻译： 垂直磁记录介质包括基板，形成在基板上的软磁背衬层，形成在软磁背衬层上的磁通限制层，形成在磁通限制层上的中间层，垂直磁记录介质的记录层 形成在中间层上的磁化膜。 磁通量限制层具有沿着多个轨道区域的轨道区域形成的多个软磁体部分和形成在相邻轨道区域之间的非磁性部件。 中间层由非磁性材料形成，并且形成为覆盖软磁性部件和非磁性部件的表面。

公开(公告)号：US07402348B2

公开(公告)日：2008-07-22

申请号：US11088241

申请日：2005-03-23

申请人： Hiroto Takeshita ,  Maki Maeda ,  Takuya Uzumaki

发明人： Hiroto Takeshita ,  Maki Maeda ,  Takuya Uzumaki

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  G11B5/012 ,  G11B5/656 ,  G11B2005/0029 ,  Y10T428/24975

摘要： A magnetic recording layer is formed on an auxiliary magnetic layer in a perpendicular magnetic recording medium. The auxiliary magnetic layer has the axis of easy magnetization in the vertical direction perpendicular to the surface of a substrate. The perpendicular magnetic recording medium reliably allows establishment of the magnetization in the auxiliary magnetic layer in the vertical direction. When a magnetic flux flows along the vertical direction perpendicular to the surface of the magnetic recording layer, the magnetic flux flows across the magnetic recording layer in the vertical direction. The magnetization is thus reliably established in the magnetic recording layer in the vertical direction. The magnetic field of a stronger intensity is thus leaked out of the magnetic recording layer in the vertical direction.

摘要翻译： 在垂直磁记录介质中的辅助磁性层上形成磁记录层。 辅助磁性层在垂直于衬底表面的垂直方向具有容易磁化的轴。 垂直磁记录介质可靠地允许在垂直方向上建立辅助磁性层中的磁化。 当磁通量沿垂直于磁记录层表面的垂直方向流动时，磁通量在垂直方向上流过磁记录层。 因此磁化在磁记录层中沿垂直方向可靠地建立。 因此，较强的强度的磁场在垂直方向从磁记录层泄漏出来。

公开(公告)号：US20060134468A1

公开(公告)日：2006-06-22

申请号：US11084551

申请日：2005-03-18

申请人： Sanae Shimizu ,  Daiju Kaneko ,  Takuya Uzumaki ,  Atsushi Tanaka

发明人： Sanae Shimizu ,  Daiju Kaneko ,  Takuya Uzumaki ,  Atsushi Tanaka

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/858

摘要： A soft magnetic thin film in which the recording magnetic field in the perpendicular direction can be preferentially intensified and sharply controlled when the thin film is applied to a perpendicular magnetic recording medium is provided. This soft magnetic thin film can be obtained by immersing a substrate into an electroless plating bath that contains a Co ion, Fe ion, and Ni ion as metal ions, as well as a complexing agent and a boron-type reducing agent, wherein the content ratios of the metal ions on the mole basis are 0.15≦(Ni ion amount/the amount of total metal ions) ≦0.40, 0.50≦(Co ion amount/the amount of total metal ions) ≦0.80, and 0.05≦(Fe ion amount/the amount of total metal ions) ≦0.15; and carrying out electroless plating in a magnetic field in a range of 5-2,000 Oe given in a direction parallel to the surface of said substrate.

摘要翻译： 提供了一种软磁性薄膜，其中当将薄膜施加到垂直磁记录介质时，其中垂直方向上的记录磁场可以被优先增强和显着控制。 该软磁性薄膜可以通过将基板浸渍到含有作为金属离子的Co离子，Fe离子和Ni离子的化学镀浴中以及络合剂和硼型还原剂来获得，其中含量 金属离子的摩尔比为0.15 <=（Ni离子量/总金属离子的量）<= 0.40，0.50 <=（Co离子量/总金属离子的量）<= 0.80，0.05 <=（Fe离子量/总金属离子的量）<= 0.15; 并且在平行于所述衬底的表面的方向上给出的5-2,000Oe范围内的磁场中进行化学镀。

公开(公告)号：US20050233178A1

公开(公告)日：2005-10-20

申请号：US10938259

申请日：2004-09-10

申请人： Toshio Sugimoto ,  Takuya Uzumaki ,  Atsushi Tanaka

发明人： Toshio Sugimoto ,  Takuya Uzumaki ,  Atsushi Tanaka

IPC分类号： G11B5/65 ,  G11B5/66 ,  G11B5/667 ,  G11B5/68 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  G11B5/851 ,  G11B5/858

CPC分类号： G11B5/667 ,  G11B5/7325 ,  G11B5/8404

摘要： A vertical magnetic recording medium comprises a substrate, a soft magnetic backing layer formed on the substrate, a magnetic flux confinement layer formed on the soft magnetic backing layer, an intermediate layer formed on the magnetic flux confinement layer, and a recording layer of a vertical magnetization film formed on the intermediate layer, wherein the magnetic flux confinement part comprises a plurality of soft magnetic parts each formed along a track region of plural track regions and a non-magnetic part formed between adjacent track regions, the intermediate layer being formed of a non-magnetic material and is formed so as to cover a surface of the soft magnetic part and the non-magnetic parts.

摘要翻译： 垂直磁记录介质包括基板，形成在基板上的软磁背衬层，形成在软磁背衬层上的磁通限制层，形成在磁通限制层上的中间层，以及纵向磁记录介质的记录层 形成在所述中间层上的磁化膜，其中所述磁通限制部分包括沿着多个轨道区域的轨道区域形成的多个软磁体部分和形成在相邻轨道区域之间的非磁性部分，所述中间层由 形成为覆盖软磁性部件和非磁性部件的表面的非磁性材料。

公开(公告)号：US20050196649A1

公开(公告)日：2005-09-08

申请号：US11091937

申请日：2005-03-28

申请人： Ryosaku Inamura ,  Hiroto Takeshita ,  Toshio Sugimoto ,  Kazumasa Shimoda ,  Takenori Oshima ,  Maki Maeda ,  Takuya Uzumaki ,  Atsushi Tanaka

发明人： Ryosaku Inamura ,  Hiroto Takeshita ,  Toshio Sugimoto ,  Kazumasa Shimoda ,  Takenori Oshima ,  Maki Maeda ,  Takuya Uzumaki ,  Atsushi Tanaka

IPC分类号： B32B1/00 ,  G11B5/64 ,  G11B5/65 ,  G11B5/667 ,  G11B5/73

CPC分类号： B32B1/00 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325

摘要： A perpendicular magnetic recording medium includes a magnetic orientation controller layer serving as a layer for controlling crystalline orientation in an upper layer. A non-magnetic orientation controller layer extends on the surface of the magnetic orientation controller layer The non-magnetic orientation controller layer serves as a layer for controlling crystalline orientation in an upper layer. A magnetic recording layer extends on the surface of the non-magnetic orientation controller layer. The perpendicular magnetic recording medium allows a reliable establishment of a uniform crystalline orientation in the magnetic recording layer based on the influences from the magnetic and non-magnetic orientation controller layers. A reliable establishment of a uniform crystalline orientation can be achieved without an increase in the thickness of the non-magnetic orientation controller layer.

摘要翻译： 垂直磁记录介质包括用作控制上层结晶取向层的磁性取向控制层。 非磁性取向控制层在磁性取向控制层的表面上延伸。非磁性取向控制层用作控制上层结晶取向的层。 磁记录层在非磁性取向控制层的表面上延伸。 垂直磁记录介质基于来自磁和非磁性取向控制层的影响，允许在磁记录层中可靠地建立均匀的晶体取向。 可以在不增加非磁性取向控制层的厚度的情况下实现均匀结晶取向的可靠建立。

公开(公告)号：US20050123805A1

公开(公告)日：2005-06-09

申请号：US11035254

申请日：2005-01-13

申请人： Sanae Shimizu ,  Arata Jogo ,  Takuya Uzumaki ,  Atsushi Tanaka

发明人： Sanae Shimizu ,  Arata Jogo ,  Takuya Uzumaki ,  Atsushi Tanaka

IPC分类号： G11B5/65 ,  G11B5/667 ,  G11B5/73 ,  G11B5/738

CPC分类号： G11B5/667 ,  G11B5/7325 ,  Y10T428/265

摘要： A perpendicular magnetic recording medium including a substrate, a metal base layer formed on the substrate, a soft magnetic layer formed on the metal base layer by electroless plating and having an axis of easy magnetization in the in-plane direction of the substrate, and a magnetic recording layer formed on the soft magnetic layer and having an axis of easy magnetization in a direction perpendicular to the surface of the substrate. The metal base layer is formed of an alloy containing at least one element selected from the group consisting of Co, Ni, and Fe, and has a coercivity of 3 oersteds (Oe) or less. The soft magnetic layer has a thickness of 100 to 600 nm.

摘要翻译： 一种垂直磁记录介质，包括基板，形成在基板上的金属基底层，通过无电镀形成在金属基底层上并具有在基板的面内方向具有易磁化轴的软磁性层，以及 磁记录层形成在软磁性层上并且在垂直于衬底表面的方向上具有容易磁化的轴。 金属基层由含有选自Co，Ni和Fe中的至少一种元素的合金形成，并且具有3奥斯特（Oe）或更低的矫顽力。 软磁性层的厚度为100〜600nm。

公开(公告)号：US06407545B1

公开(公告)日：2002-06-18

申请号：US09442261

申请日：1999-11-17

申请人： Kenji Sato ,  Takuya Uzumaki ,  Tadashi Mizoguchi

发明人： Kenji Sato ,  Takuya Uzumaki ,  Tadashi Mizoguchi

IPC分类号： G01R3312

CPC分类号： G01R33/14

摘要： An apparatus and a method for measuring the remanence curve of a magnetic material with high accuracy is disclosed. First and second pulse magnetic field coils generate a rapidly-changing pulse magnetic field in the space where a magnetic material is located. First and second air-core coils generate a space of a zero magnetic field as well as a finite magnetic field gradient around the magnetic material after application of a pulse magnetic field. A detector detects the force generated by the cooperation between the magnetic field gradient and the magnetic moment of the magnetic material. An arithmetic unit 33 determines the residual magnetization characteristic of the magnetic material based on the detection result in the detector.

摘要翻译： 公开了一种用于高精度地测量磁性材料的剩磁曲线的装置和方法。 第一和第二脉冲磁场线圈在磁性材料所在的空间中产生快速变化的脉冲磁场。 第一和第二空心线圈在施加脉冲磁场之后产生零磁场的空间以及磁性材料周围的有限磁场梯度。 检测器检测由磁场梯度和磁性材料的磁矩之间的协调产生的力。 算术单元33基于检测器中的检测结果来确定磁性材料的剩余磁化特性。