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41. 发明申请

US20070008639A1 Magnetic recording/reproducing system 失效
标题翻译：磁记录/再现系统
公开(公告)号：US20070008639A1
公开(公告)日：2007-01-11
申请号：US11333505
申请日：2006-01-18
申请人： Katsumichi Tagami , Kazuya Shimakawa
发明人： Katsumichi Tagami , Kazuya Shimakawa
IPC分类号： G11B5/09 , G11B5/596
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： The invention is directed to a magnetic recording/reproducing system wherein each burst pattern in discrete media is configured in a substantially trapezoidal shape (truncated quadrangular pyramid shape, and which satisfies given relations between W1, W2, Tp and Wr. W1 is the upper side of the trapezoidal shape in the track width direction, which corresponds to the surface of said convex-form magnetic recoding layer, W2 is the lower side of the trapezoidal shape in the track width direction, which corresponds to the bottom surface of said convex-form magnetic layer, Tp is the data track pitch at the data information recording portion, and Wr is the read width of the magnetic head, so that loads on burst pattern shape in medium fabrication processes can be far more reduced and far more precise position error signals can be obtained.
摘要翻译：本发明涉及一种磁记录/再现系统，其中离散介质中的每个突发图案被配置为基本上梯形的形状（截顶四棱锥形状，并且满足W 1，W 2，Tp和Wr之间的给定关系W 1为对应于所述凸形磁记录层的表面的轨道宽度方向上的梯形形状的上侧W 2是轨道宽度方向上的梯形形状的下侧，其对应于所述凸形磁性层Tp是数据信息记录部分的数据磁道间距，Wr是磁头的读取宽度，因此在介质制造工艺中的突发图案形状上的负载可以进一步减少和远远多于可以获得精确的位置误差信号。

42. 发明申请

US20060221511A1 Low-resistance tunnel magnetoresistive effect element, and manufacturing method, testing method and testing apparatus for the element 有权
标题翻译：低电阻隧道磁阻效应元件，以及元件的制造方法，测试方法和测试装置
公开(公告)号：US20060221511A1
公开(公告)日：2006-10-05
申请号：US11387876
申请日：2006-03-24
申请人： Shunji Saruki , Kenji Inage , Tetsuya Kuwashima , Hiroshi Kiyono , Katsumichi Tagami , Kazumasa Fukuda , Masahide Kohno
发明人： Shunji Saruki , Kenji Inage , Tetsuya Kuwashima , Hiroshi Kiyono , Katsumichi Tagami , Kazumasa Fukuda , Masahide Kohno
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/455 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G11B5/3903 , G11B5/3909 , H01F10/3254 , H01F41/303 , H01L43/08 , H01L43/12
摘要： A TMR effect element with sufficiently reduced element resistance and restricted popping noise is provided, which comprises a tunnel barrier layer formed primarily of a metal oxide including many electric charge sites. The electric charge sites density n and the mobility μ of electrons trapped due to the electric charge sites satisfy a relationship expressed by: 0
摘要翻译：提供具有充分降低的元件电阻和限制弹出噪声的TMR效应元件，其包括主要由包括许多电荷位点的金属氧化物形成的隧道势垒层。电荷位置密度n和由于电荷位点而陷入的电子的迁移率μ满足由下式表示的关系：0 <（N _{s1 （mu≠0）> / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 当元件电阻在读取信号期间分别为最小值和最大值时，隧道电子的密度分别为SUP> <0.2，其中N _{s1 和n2s2 < / SUB>是未被捕获的电子的迁移率。}}

43. 发明授权

US07095581B2 Magnetic recording and reproducing apparatus with recording layer having predeterminded convex-concase pattern 失效
标题翻译：带有记录层的磁记录和重放装置具有预先形成的凸起连接图案
公开(公告)号：US07095581B2
公开(公告)日：2006-08-22
申请号：US11109693
申请日：2005-04-20
申请人： Katsumichi Tagami
发明人： Katsumichi Tagami
IPC分类号： G11B5/62
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/743
摘要： A convex structure, where a servo signal is recorded, of a perpendicular magnetic recording medium is set to a truncated quadrangular pyramid shape and a specification of the truncated quadrangular pyramid shape and so forth are determined according to properties of the perpendicular magnetic recording medium to be used, so that the influence of a demagnetizing field that accelerates thermal fluctuation of the perpendicular magnetic recording medium can be reduced in a servo area of the medium which is most affected by the thermal fluctuation of the medium. Therefore, it is possible to provide a magnetic recording and reproducing apparatus having the magnetic recording medium that can suppress degradation of the servo signal caused by the thermal fluctuation of magnetization of perpendicular magnetic recording layers forming a convex-concave structure in the servo area to thereby ensure a stable servo function over the long term.
摘要翻译：垂直磁记录介质的记录伺服信号的凸结构被设定为截顶四棱锥形状，并且根据垂直磁记录介质的特性来确定截顶四棱锥形状等的规格所以能够在受介质的热波动影响最大的介质的伺服区域中减小加速垂直磁记录介质的热波动的退磁场的影响。因此，可以提供具有磁记录介质的磁记录和再现装置，该磁记录介质能够抑制在伺服区域中形成凸凹结构的垂直磁记录层的磁化的磁化强度引起的伺服信号的劣化，由此确保长期稳定的伺服功能。

44. 发明申请

US20060077880A1 Information recording medium and recording/reproducing apparatus 有权
标题翻译：信息记录介质和记录/再现装置
公开(公告)号：US20060077880A1
公开(公告)日：2006-04-13
申请号：US11225185
申请日：2005-09-14
申请人： Makoto Moriya , Katsumichi Tagami
发明人： Makoto Moriya , Katsumichi Tagami
IPC分类号： G11B7/00
CPC分类号： G11B5/59655 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： An information recording medium excellent in surface smoothness. The information recording medium has a data track pattern and a servo pattern formed on at least one surface of a substrate by a concave/convex pattern including a plurality of convex portions. The concave/convex pattern has concave portions each having a non-magnetic material embedded therein. An A concave/convex pattern forming the servo pattern includes a plurality of servo convex portions formed in a manner associated with servo data. At least part of the plurality of servo convex portions are formed by a B concave/convex pattern including a plurality of non-servo convex portions. This arrangement makes it possible to maintain excellent surface smoothness within a servo pattern area, thereby enabling the recording/reproducing apparatus to execute stable recording and reproducing on and from the information recording medium.
摘要翻译：表面平滑度优异的信息记录媒体。信息记录介质具有通过包括多个凸部的凹凸图案形成在基板的至少一个表面上的数据轨迹图案和伺服图案。凹凸图案具有嵌入其中的非磁性材料的凹部。形成伺服图案的凹凸图案包括以与伺服数据相关联的方式形成的多个伺服凸部。多个伺服凸部的至少一部分由包括多个非伺服凸部的B凹凸图案形成。这种布置使得可以在伺服图案区域内保持优异的表面平滑度，从而使得记录/再现装置能够在信息记录介质上执行稳定的记录和再现。

45. 发明申请

US20060044670A1 Method for preventing reduction in a reproduced output of a servo signal in a magnetic recording medium 失效
标题翻译：防止磁记录介质中的伺服信号的再生输出减少的方法
公开(公告)号：US20060044670A1
公开(公告)日：2006-03-02
申请号：US11135510
申请日：2005-05-24
申请人： Katsumichi Tagami
发明人： Katsumichi Tagami
IPC分类号： G11B5/596 , G11B5/09 , G11B5/02
CPC分类号： G11B5/59633
摘要： Servo regions are re-magnetized in the present invention. A magnetic storage device measures a first amount which is indicative of the magnitude of magnetization of a servo region, by a read head portion. The first amount may be a reproduced output, or an inverse of a gain used in an automatic gain control, etc. Servo regions are re-magnetized by a write head portion, when a servo region is detected in which a ratio of the measured first amount to an initial value of the first amount is smaller than a predetermined value, i.e., it is determined that the magnetization is reduced.
摘要翻译：伺服区域在本发明中被重新磁化。磁存储装置通过读头部测量指示伺服区的磁化强度的第一量。第一量可以是再现输出，或者是在自动增益控制中使用的增益的倒数等。当检测到伺服区域时，伺服区域被写入头部重新磁化，其中测量的第一等于第一量的初始值小于预定值，即确定磁化减小。

46. 发明申请

US20060040140A1 Magnetic recording medium and magnetic recording/reproducing apparatus 审中-公开
标题翻译：磁记录介质和磁记录/再现装置
公开(公告)号：US20060040140A1
公开(公告)日：2006-02-23
申请号：US11200487
申请日：2005-08-10
申请人： Akimasa Kaizu , Katsumichi Tagami , Kazuya Shimakawa
发明人： Akimasa Kaizu , Katsumichi Tagami , Kazuya Shimakawa
IPC分类号： G11B5/667 , G11B5/66
CPC分类号： G11B5/667 , G11B5/66 , G11B5/855
摘要： A perpendicular recording type, magnetic recording medium having a soft magnetic layer and a magnetic recording/reproducing apparatus including such a magnetic recording medium are provided. The magnetic recording medium allows the recording magnetic field to be efficiently applied to a track for recording while restricting the extent of the recording magnetic field. The magnetic recording medium has a soft magnetic layer and a recording layer formed in this order on a substrate. The soft magnetic layer has its part on the opposite side to the substrate formed in a concavo-convex pattern. The recording layer is oriented to have magnetic anisotropy in the direction perpendicular to the surface. A fixing layer for fixing the magnetic anisotropy of the soft magnetic layer in a predetermined direction parallel to the surface is provided between the recording layer and the soft magnetic layer.
摘要翻译：提供具有软磁性层的垂直记录型磁记录介质和包括这种磁记录介质的磁记录/重放装置。磁记录介质允许将记录磁场有效地施加到用于记录的轨道，同时限制记录磁场的范围。磁记录介质具有在基板上依次形成的软磁性层和记录层。软磁性层的一部分与形成为凹凸图案的基板相反。记录层取向为在垂直于表面的方向上具有磁各向异性。在记录层和软磁性层之间设置用于将软磁性层的磁各向异性固定在与表面平行的规定方向上的固定层。

47. 发明授权

US08324672B2 Spin transport device 有权
标题翻译：旋转运输装置
公开(公告)号：US08324672B2
公开(公告)日：2012-12-04
申请号：US12821466
申请日：2010-06-23
申请人： Tomoyuki Sasaki , Tohru Oikawa , Katsumichi Tagami
发明人： Tomoyuki Sasaki , Tohru Oikawa , Katsumichi Tagami
IPC分类号： H01L29/76 , H01L29/94 , H01L31/062 , H01L31/113 , H01L31/119
CPC分类号： H01L27/22 , B82Y25/00 , G11C11/161 , H01F10/3254
摘要： A spin transport device which comprises a channel, first and second insulating layers, a magnetization fixed layer, a magnetization free layer, first and second wirings, and satisfies at least one of following conditions A and B, Condition A: The first wiring includes a vertical portion which extends in a thickness direction of the magnetization fixed layer on the magnetization fixed layer, and a horizontal portion which extends from the vertical portion that is apart from the magnetization fixed layer side in a direction crossing the thickness direction of the magnetization fixed layer, and Condition B: The second wiring includes a vertical portion which extends in a thickness direction of the magnetization free layer on the magnetization free layer, and a horizontal portion which extends from the vertical portion that is apart from the magnetization free layer side in a direction crossing the thickness direction of the magnetization free layer.
摘要翻译：一种自旋传输装置，包括通道，第一和第二绝缘层，磁化固定层，磁化自由层，第一和第二布线，并且满足以下条件A和B中的至少一个条件A：第一布线包括在磁化固定层的磁化固定层的厚度方向上延伸的垂直部分和从与磁化固定层侧分离的垂直部分在与磁化固定层的厚度方向交叉的方向上延伸的水平部分和条件B：第二布线包括在磁化自由层上的磁化自由层的厚度方向上延伸的垂直部分和从远离磁化自由层侧的垂直部分延伸的水平部分方向与磁化自由层的厚度方向交叉。

48. 发明授权

US08269294B2 Spin transport device 有权
标题翻译：旋转运输装置
公开(公告)号：US08269294B2
公开(公告)日：2012-09-18
申请号：US12796034
申请日：2010-06-08
申请人： Tomoyuki Sasaki , Tohru Oikawa , Katsumichi Tagami , Masaki Kubota
发明人： Tomoyuki Sasaki , Tohru Oikawa , Katsumichi Tagami , Masaki Kubota
IPC分类号： H01L29/82 , G11C11/02
CPC分类号： H01L29/66984 , G11C11/161 , G11C11/1673 , G11C11/1675
摘要： A spin transport device is provided, which includes a channel comprised of a semiconductor material, a magnetization fixed layer arranged on the channel via a first insulating layer, a magnetization free layer arranged on the channel via a second insulating layer, and first and second electrodes arranged on the channel, wherein carrier densities of a first region of the channel including a contact surface with the first insulating layer, a second region of the channel including a contact surface with the second insulating layer, a third region of the channel including an opposite surface to the first electrode, and a fourth region of the channel including an opposite surface to the second electrode are higher than an average carrier density of the whole channel. Accordingly, a spin transport device that can realize good spin transportation and electric resistance characteristics while suppressing the scattering of spin can be provided.
摘要翻译：提供自旋传输装置，其包括由半导体材料构成的通道，经由第一绝缘层布置在通道上的磁化固定层，经由第二绝缘层布置在通道上的无磁化层，以及第一和第二电极布置在通道上，其中通道的第一区域的载流子密度包括与第一绝缘层的接触表面，通道的第二区域包括与第二绝缘层的接触表面，通道的第三区域包括相对的并且包括与第二电极相反的表面的沟道的第四区域高于整个通道的平均载流子密度。因此，可以提供能够在抑制旋转散射的同时实现良好的自旋运输和电阻特性的自旋输送装置。

49. 发明授权

US07916434B2 Tunnel magnetoresistive effect element with limited electric popping output voltage 有权
标题翻译：隧道磁阻效应元件具有有限的电涌输出电压
公开(公告)号：US07916434B2
公开(公告)日：2011-03-29
申请号：US11387876
申请日：2006-03-24
申请人： Shunji Saruki , Kenji Inage , Tetsuya Kuwashima , Hiroshi Kiyono , Katsumichi Tagami , Kazumasa Fukuda , Masahide Kohno
发明人： Shunji Saruki , Kenji Inage , Tetsuya Kuwashima , Hiroshi Kiyono , Katsumichi Tagami , Kazumasa Fukuda , Masahide Kohno
IPC分类号： G11B5/33
CPC分类号： G11B5/455 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G11B5/3903 , G11B5/3909 , H01F10/3254 , H01F41/303 , H01L43/08 , H01L43/12
摘要： A TMR effect element with sufficiently reduced element resistance and restricted popping noise is provided, which comprises a tunnel barrier layer formed primarily of a metal oxide including many electric charge sites. The electric charge sites density n and the mobility μ of electrons trapped due to the electric charge sites satisfy a relationship expressed by: 0
摘要翻译：提供具有充分降低的元件电阻和限制弹出噪声的TMR效应元件，其包括主要由包括许多电荷位点的金属氧化物形成的隧道势垒层。电荷位置密度n和由于电荷位点捕获的电子的迁移率μ满足由下式表示的关系：0 <（ns1-1-ns2-1）-1·（μ0-μ）·（nμ）-1 <0.2，其中ns1和ns2是在读取信号期间元件电阻分别为最小值和最大值时隧道电子的密度，μ0是未被捕获时电子的迁移率。

50. 发明授权

US07724474B2 Thin-film magnetic head comprising contact pad including portions of closure and substrate and magnetic recording apparatus comprising the head 有权
标题翻译：薄膜磁头包括包括封闭件和基板的部分的接触焊盘以及包括磁头的磁记录装置
公开(公告)号：US07724474B2
公开(公告)日：2010-05-25
申请号：US11497376
申请日：2006-08-02
申请人： Kazuhiko Maejima , Mitsuyoshi Kawai , Hiroki Matsukuma , Katsumichi Tagami , Makoto Yoshida , Hiroshi Kamiyama
发明人： Kazuhiko Maejima , Mitsuyoshi Kawai , Hiroki Matsukuma , Katsumichi Tagami , Makoto Yoshida , Hiroshi Kamiyama
IPC分类号： G11B5/60
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3106 , G11B5/3967
摘要： A thin-film magnetic head that shows stable read and/or write performances, maintaining the reliability over time by suppressing the wear of the head sufficiently, is provided. The head comprises: a substrate having an element-formed surface and an opposed-to-medium surface; a magnetic head element; an overcoat layer formed on the element-formed surface so as to cover the magnetic head element; a closure provided on the overcoat layer, a surface of the closure being in contact with the upper surface of the overcoat layer; and an element contact pad formed in a sliding-side surface of the head and having a contact surface including a part of the opposed-to-medium surface, a part of an end surface of the overcoat layer and a part of an end surface of the closure, one end of the magnetic head element reaching the contact surface.
摘要翻译：提供了表现出稳定的读取和/或写入性能的薄膜磁头，通过足够地抑制头部的磨损来保持随时间的可靠性。头部包括：具有元件形成表面和相对中间表面的基底; 磁头元件; 形成在所述元件形成表面上以覆盖所述磁头元件的外涂层; 设置在外涂层上的封盖，封盖的表面与外涂层的上表面接触; 以及形成在所述头部的滑动侧表面中的元件接触垫，并且具有包括相对中间表面的一部分的接触表面，所述外涂层的端面的一部分和端面的一部分闭合件，磁头元件的一端到达接触表面。

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