公开(公告)号：US20070053106A1

公开(公告)日：2007-03-08

申请号：US11485328

申请日：2006-07-13

申请人： Yoshiaki Sonobe ,  Shinichi Ishibashi ,  Masato Kobayashi ,  Teiichiro Umezawa

发明人： Yoshiaki Sonobe ,  Shinichi Ishibashi ,  Masato Kobayashi ,  Teiichiro Umezawa

IPC分类号： G11B5/74

CPC分类号： G11B5/667 ,  G11B5/8404

摘要： A perpendicular magnetic recording medium 10 adapted to be mounted in a perpendicular magnetic recording type hard disk drive and including a disk-shaped disk base 12, a soft magnetic layer 14 formed on the disk base 12, and a perpendicular magnetic recording layer 16 formed on the soft magnetic layer 14, wherein, at respective portions of the soft magnetic layer 14, directional distribution of easy magnetization axes of magnetic particles included In each of the respective portions is isotropic with respect to respective directions in the main surface of the soft magnetic layer 14.

摘要翻译： 适用于垂直磁记录型硬盘驱动器的垂直磁记录介质10，包括盘形盘基座12，形成在盘基座12上的软磁层14和垂直磁记录层16， 软磁性层14，其中，在软磁性层14的各个部分，包含的磁性粒子容易磁化轴的方向分布在各个部分中，相对于软磁性层主表面的各个方向各向同性 14。

公开(公告)号：US5189574A

公开(公告)日：1993-02-23

申请号：US431387

申请日：1989-11-03

申请人： Makoto Imamura ,  Kazushi Tanimoto ,  Yoichiro Tanaka ,  Yoshiaki Sonobe ,  Katsuyoshi Kitagawa

发明人： Makoto Imamura ,  Kazushi Tanimoto ,  Yoichiro Tanaka ,  Yoshiaki Sonobe ,  Katsuyoshi Kitagawa

IPC分类号： G11B5/60 ,  G11B7/08 ,  G11B7/12 ,  G11B17/12 ,  G11B17/32 ,  G11B21/21 ,  G11B33/08 ,  G11B33/14

CPC分类号： G11B7/123 ,  G11B17/32 ,  G11B21/21 ,  G11B33/08 ,  G11B33/14 ,  G11B5/6005 ,  G11B7/08 ,  G11B7/122

摘要： A magnetic or optical disk apparatus having a flexible disk rotated at high speed and head sliders for reading and writing information on the disk, floating from both sides of the disk. The disk apparatus is also provided with straightening plates for keeping air flow in the radial direction of the disk as a laminar flow to surely prevent the disk from being vibrated at the time when the disk is rotated at high speed. As the result, positions of the head sliders relative to the disk can be surely and accurately maintained to provide heads with excellent recording and reproducing characteristics. Mass storage and high speed access can be thus achieved without damaging the flexible disk and the disk apparatus can be smaller-sized with lighter weight and lower cost.

摘要翻译： 一种具有高速旋转的软盘的磁盘或光盘装置，以及用于从盘的两侧浮起的盘上的信息读取和写入头磁头。 盘装置还设置有用于将盘的径向空气流作为层流的矫直板，以在盘高速旋转时可靠地防止盘的振动。 结果，可以可靠且准确地保持磁头滑块相对于磁盘的位置，以提供具有优异的记录和再现特性的磁头。 因此可以实现大容量存储和高速存取，而不会损坏软盘，并且可以以更轻的重量和更低的成本使盘装置更小型化。

公开(公告)号：US20160125924A1

公开(公告)日：2016-05-05

申请号：US14922530

申请日：2015-10-26

申请人： Eiji KITA ,  Yoshiaki Sonobe

发明人： Eiji KITA ,  Yoshiaki Sonobe

IPC分类号： G11C11/16 ,  H01L43/08 ,  H01L43/10 ,  H01L43/02

CPC分类号： G11C11/161 ,  G11B5/3906 ,  G11B5/3909 ,  G11C11/1673 ,  G11C11/1675 ,  H01L27/228 ,  H01L43/02 ,  H01L43/08 ,  H01L43/10

摘要： Magneto-resistive devices with lower power consumption and higher stability are provided. The magneto-resistive devices may include a pinned layer, a free layer and an insulating layer between the pinned layer and the free layer. The pinned layer, the free layer and the insulating layer may constitute a magnetic tunnel junction. The free layer may include a first magnetic layer and a second magnetic layer that has a Curie temperature lower than a Curie temperature of the first magnetic layer.

摘要翻译： 提供具有较低功耗和更高稳定性的磁阻器件。 磁阻器件可以包括钉扎层，自由层和钉扎层与自由层之间的绝缘层。 被钉扎层，自由层和绝缘层可以构成磁性隧道结。 自由层可以包括具有低于第一磁性层的居里温度的居里温度的第一磁性层和第二磁性层。

公开(公告)号：US20150188034A1

公开(公告)日：2015-07-02

申请号：US14578671

申请日：2014-12-22

申请人： Shigeki Takahashi ,  Yoshiaki Sonobe ,  Koki Takanashi

发明人： Shigeki Takahashi ,  Yoshiaki Sonobe ,  Koki Takanashi

IPC分类号： H01L43/08 ,  H01L43/10

CPC分类号： H01L43/08 ,  H01L43/02 ,  H01L43/10 ,  H01L43/12

摘要： A magnetic tunnel junction device includes: a first magnetic layer that has an easy axis vertical to a surface; a non-magnetic layer on the first magnetic layer; and a second magnetic layer that has an easy axis vertical to a surface on the non-magnetic layer, and an interface layer formed of a Heussler alloy between the non-magnetic layer and at least one of the first and second magnetic layers. The at least one of the first and second magnetic layers is formed of MnGa. A lattice constant of the interface layer parallel to a major surface thereof in a bulk state thereof is between a lattice constant of the non-magnetic layer parallel to a major surface thereof in a bulk state thereof and a lattice constant of the at least one of the first and second magnetic layers parallel to a major surface thereof in a bulk state thereof.

摘要翻译： 磁性隧道结装置包括：具有垂直于表面的容易轴的第一磁性层; 第一磁性层上的非磁性层; 以及具有与所述非磁性层上的表面垂直的容易轴的第二磁性层以及在所述非磁性层与所述第一和第二磁性层中的至少一个之间由Heussler合金形成的界面层。 第一和第二磁性层中的至少一个由MnGa形成。 在其主体状态下平行于其主表面的界面层的晶格常数在其主体状态下平行于其主表面的非磁性层的晶格常数和至少一个的晶格常数之间 第一和第二磁性层在其主体状态下平行于其主表面。

公开(公告)号：US08758911B2

公开(公告)日：2014-06-24

申请号：US12602446

申请日：2008-05-30

申请人： Yoshiaki Sonobe ,  Kong Kim

发明人： Yoshiaki Sonobe ,  Kong Kim

IPC分类号： G11B5/66 ,  G11B5/65

CPC分类号： G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/7325

摘要： A perpendicular magnetic recording medium is disclosed that includes a substrate, a main recording layer, a reinforcing layer, and a continuous layer which are overlaid in this order on the substrate. The reinforcing layer is provided between the main recording layer and the continuous layer so as to improve the S/N ratio of the magnetic recording medium and reduce the write fringing effect. The reinforcing layer has a granular structure. The saturation magnetization Ms of the reinforcing layer is higher than the saturation magnetization of the main recording layer.

摘要翻译： 公开了一种垂直磁记录介质，其包括在基板上依次重叠的基板，主记录层，加强层和连续层。 增强层设置在主记录层和连续层之间，以提高磁记录介质的S / N比并减小写入边缘效应。 增强层具有粒状结构。 加强层的饱和磁化强度Ms高于主记录层的饱和磁化强度。

公开(公告)号：US08367228B2

公开(公告)日：2013-02-05

申请号：US12906414

申请日：2010-10-18

申请人： Yoshiaki Sonobe ,  Teiichiro Umezawa ,  Koichi Wago

发明人： Yoshiaki Sonobe ,  Teiichiro Umezawa ,  Koichi Wago

IPC分类号： G11B5/66

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/66 ,  G11B5/743 ,  G11B5/855 ,  G11B2005/0029

摘要： A method for manufacturing a magnetic recording medium for perpendicular magnetic recording includes the steps of forming a first magnetic layer which has magnetic crystal grains exhibiting perpendicular magnetic anisotropy and nonmagnetic substances for magnetically separating the magnetic crystal grains from each other at grain boundaries of the magnetic crystal grains, forming a second magnetic layer which has magnetic grains exchange-coupled to the magnetic crystal grains, a grain boundary width of the magnetic grains being smaller than a grain boundary width of the magnetic crystal grains, and forming separation regions which magnetically separate tracks from each other in regions between the tracks of the magnetic recording medium in at least the second magnetic layer. The separation regions are disposed substantially only in the second magnetic layer of the first magnetic layer and the second magnetic layer.

摘要翻译： 一种用于垂直磁记录的磁记录介质的制造方法包括以下步骤：形成具有垂直磁各向异性的磁性晶粒的第一磁性层和用于在磁性晶体的晶界处将磁性晶粒彼此磁分离的非磁性物质 形成具有磁性晶粒与磁性晶粒交换耦合的第二磁性层，所述磁性晶粒的晶界宽度小于所述磁性晶粒的晶界宽度，以及形成分离区域，其将磁道与 彼此在至少第二磁性层中的磁记录介质的轨道之间的区域中。 分离区域基本上仅设置在第一磁性层和第二磁性层的第二磁性层中。

公开(公告)号：US08076013B2

公开(公告)日：2011-12-13

申请号：US12526866

申请日：2008-02-13

申请人： Yoshiaki Sonobe ,  Takahiro Onoue ,  Koichi Wago

发明人： Yoshiaki Sonobe ,  Takahiro Onoue ,  Koichi Wago

IPC分类号： G11B5/667

CPC分类号： G11B5/66 ,  G11B5/855

摘要： A magnetic recording medium (10) has a substrate (12) and a perpendicular magnetic recording layer (30) formed over the substrate (12). The perpendicular magnetic recording layer (30) has a granular layer (20) in which a magnetic signal is recorded and a continuous film layer (24) magnetically coupled to the granular layer (20). The continuous film layer (24) has hard magnetic portions (204) formed in positions corresponding to the recording regions where magnetic signals are recorded in the granular layer (20) and magnetic shield portions (202) formed between the hard magnetic portions (204), each having a magnetization curve whose slope is larger than those of the hard magnetic portions in the region where the applied magnetic filed is zero when the magnetization curve is measured, and each having a residual magnetic polarization smaller than those in the hard magnetic portions.

摘要翻译： 磁记录介质（10）具有形成在基板（12）上的基板（12）和垂直磁记录层（30）。 垂直磁记录层（30）具有其中记录有磁信号的粒状层（20）和磁性耦合到粒状层（20）的连续膜层（24）。 连续薄膜层（24）具有形成在磁性信号被记录在粒状层（20）中的记录区域对应的位置上的硬磁性部分（204）和形成在硬磁性部分（204）之间的磁屏蔽部分（202） 每个磁化曲线在测量磁化曲线时具有比施加的磁场为零的区域中的硬磁性部分的斜率大的磁化曲线，并且每个磁化曲线的残余磁极化小于硬磁性部分中的残余磁极化。

公开(公告)号：US06468670B1

公开(公告)日：2002-10-22

申请号：US09487234

申请日：2000-01-19

申请人： Yoshihiro Ikeda ,  Manfred Ernst Schabes ,  Yoshiaki Sonobe ,  Kentaro Takano ,  Dieter Klaus Weller

发明人： Yoshihiro Ikeda ,  Manfred Ernst Schabes ,  Yoshiaki Sonobe ,  Kentaro Takano ,  Dieter Klaus Weller

IPC分类号： G11B566

CPC分类号： G11B5/667 ,  G11B5/66 ,  G11B5/7325 ,  Y10T428/12465 ,  Y10T428/12868 ,  Y10T428/12875

摘要： A composite perpendicular magnetic recording disk has two distinct magnetic layers formed on the disk substrate, each with strong perpendicular magnetic anisotropy, that are strongly exchange coupled perpendicularly to each other across their interface. The first layer is a CoCr granular layer formed on a growth-enhancing sublayer, such as titanium, so as to have strong perpendicular magnetic anisotropy. The second layer is a continuous layer, preferably a continuous multilayer of Co/Pt or Co/Pd palladium formed on top of the granular layer. An interface layer, such as a layer of platinum or palladium, depending on whether the top multilayer is Co/Pt or Co/Pd, respectively, may be located between the two layers to enhance the growth of the continuous multilayer.

摘要翻译： 复合垂直磁记录盘具有形成在盘基板上的两个不同的磁性层，每个具有强的垂直磁各向异性，它们通过它们的界面彼此垂直地交换。 第一层是在诸如钛的生长增强子层上形成的CoCr颗粒层，以具有强的垂直磁各向异性。 第二层是形成在颗粒层顶部上的连续层，优选连续多层Co / Pt或Co / Pd钯。 取决于顶层多层是分别为Co / Pt还是Co / Pd的界面层，例如铂或钯层，可分别位于两层之间，以增强连续多层的生长。

公开(公告)号：US6104578A

公开(公告)日：2000-08-15

申请号：US406768

申请日：1995-03-17

申请人： Nobuyuki Kitazaki ,  Yoshiaki Sonobe ,  Masayuki Kanamaru

发明人： Nobuyuki Kitazaki ,  Yoshiaki Sonobe ,  Masayuki Kanamaru

IPC分类号： G11B5/60 ,  G11B5/82

CPC分类号： G11B5/6005 ,  G11B5/82

摘要： A magnetic recording disk of a disk drive apparatus is constructed having a radially sloped surface, so that the outer area of the disk is thinner than the inner area. The radially downward slope of the disk surface has the effect of increasing the crown of the disk head, this effect being greatest closest to the disk axis and decreasing as the head moves toward the outer diameter. A head landing zone is preferably located at the inner part of the disk surface, where the crown is greatest, reducing stiction during disk start-up. Furthermore, the gradual reduction in crown as the head moves radially outward compensates for the increasing velocity of the head relative to the disk surface, achieving a more uniform flying height of the disk head.

摘要翻译： 磁盘驱动装置的磁记录盘被构造成具有径向倾斜的表面，使得盘的外部区域比内部区域薄。 盘表面的径向向下倾斜具有增加盘头的冠部的效果，该效果最接近盘轴，并且随着头部朝向外径移动而减小。 磁头着陆区优选地位于磁盘表面的内部，其中表冠最大，从而减小磁盘启动期间的静摩擦力。 此外，当头部径向向外移动时，冠部的逐渐减小补偿了头部相对于盘表面的速度增加，实现了盘头的更均匀的飞行高度。

公开(公告)号：US5970602A

公开(公告)日：1999-10-26

申请号：US922806

申请日：1997-09-03

申请人： Yoshinao Harada ,  Yoshiaki Sonobe ,  Hajime Tokumitsu ,  Kazuya Takeda ,  Keiichi Iwasaki

发明人： Yoshinao Harada ,  Yoshiaki Sonobe ,  Hajime Tokumitsu ,  Kazuya Takeda ,  Keiichi Iwasaki

IPC分类号： G11B5/60 ,  G11B5/48 ,  G11B21/21 ,  G11B5/127

CPC分类号： G11B5/484 ,  Y10T29/4903

摘要： A thin metal plate, which is a material for forming load beams, is integrally formed with carriages extending from flexures, VCM coil sections, and a support plate for a flexible substrate. The signal output lines from the magnetic heads, and the signal lines from the VCM coil sections are connected directly and integrally to the flexible substrate without a soldering connection.

摘要翻译： 作为用于形成负载梁的材料的薄金属板与从挠曲件，VCM线圈部分和用于柔性基板的支撑板延伸的滑架整体形成。 来自磁头的信号输出线和来自VCM线圈部分的信号线直接并且整体地连接到柔性基板而没有焊接连接。