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1. 发明申请

US20070139818A1 Thin-film magnetic head with near-field-light-generating layer 有权
标题翻译：具有近场光产生层的薄膜磁头
公开(公告)号：US20070139818A1
公开(公告)日：2007-06-21
申请号：US11604225
申请日：2006-11-27
申请人： Koji Shimazawa , Katsumichi Tagami
发明人： Koji Shimazawa , Katsumichi Tagami
IPC分类号： G11B5/147 , G11B5/02 , G11B5/48
CPC分类号： G11B5/314 , G11B5/3136 , G11B5/3967 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.
摘要翻译：提供具有其中元件形成表面和相对中间表面彼此垂直并且光源足够远离介质表面的构造的薄膜磁头。头部包括至少一个近场光产生层，用于在写入操作期间通过产生近场光来加热磁性介质的一部分，其具有朝向相对中间表面上的头端表面逐渐变细的形状并且包括具有光接收表面的近场光产生部分和到达相对 - 介质表面侧上的头端表面的尖端，并且光接收表面相对于元件倾斜并且设置在从相对于中间相对面的头端面传播的入射光可以到达受光面的至少一部分的位置。

2. 发明授权

US07911882B2 Thin-film magnetic head with near-field-light-generating layer 有权
标题翻译：具有近场光产生层的薄膜磁头
公开(公告)号：US07911882B2
公开(公告)日：2011-03-22
申请号：US11604225
申请日：2006-11-27
申请人： Koji Shimazawa , Katsumichi Tagami
发明人： Koji Shimazawa , Katsumichi Tagami
IPC分类号： G11B7/125 , G11B7/135 , G11B11/10
CPC分类号： G11B5/314 , G11B5/3136 , G11B5/3967 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.
摘要翻译：提供具有其中元件形成表面和相对中间表面彼此垂直并且光源足够远离介质表面的构造的薄膜磁头。头部包括至少一个近场光产生层，用于在写入操作期间通过产生近场光来加热磁性介质的一部分，其具有朝向相对中间表面上的头端表面逐渐变细的形状并且包括具有光接收表面的近场光产生部分和到达相对 - 介质表面侧上的头端表面的尖端，并且光接收表面相对于元件倾斜并且设置在从相对于中间相对面的头端面传播的入射光可以到达受光面的至少一部分的位置。

3. 发明授权

US07773342B2 Thin-film magnetic head having near-field-light-generating portion with trapezoidal end 有权
标题翻译：具有梯形端的近场光产生部分的薄膜磁头
公开(公告)号：US07773342B2
公开(公告)日：2010-08-10
申请号：US11698145
申请日：2007-01-26
申请人： Koji Shimazawa , Katsumichi Tagami
发明人： Koji Shimazawa , Katsumichi Tagami
IPC分类号： G11B5/39
CPC分类号： G11B5/314 , G11B5/3967 , G11B2005/0021
摘要： A thin-film magnetic head for a heat-assisted magnetic recording which can perform a reliable writing immediately only on a desired track by applying a near-field light to a desired position and range is provided. The head comprises: an electromagnetic coil element for writing data signals, having a pole end reaching a head end surface; and a near-field-light-generating portion for heating a portion of a magnetic recording medium during write operation by generating a near-field light, having a generation end reaching the head end surface and provided adjacent to the pole end and in the leading side of the pole end, and a shape of the generation end on the head end surface being a trapezoid with a shorter edge on the trailing side, or being a triangle with an apex on the trailing side and with a bottom on the leading side.
摘要翻译：提供了一种用于热辅助磁记录的薄膜磁头，其可以通过将近场光施加到期望的位置和范围来立即仅在期望的轨道上执行可靠的写入。头部包括：用于写入数据信号的电磁线圈元件，具有到达头端表面的极端; 以及近场光产生部分，用于通过产生近场光来在写入操作期间加热磁记录介质的一部分，其具有到达头端表面并且邻近极端设置的前端并且头端面上的发生端的形状是在后侧具有较短边缘的梯形，或者是在后侧具有顶点且在前侧具有底部的三角形。

4. 发明申请

US20070177302A1 Thin-film magnetic head having near-field-light-generating portion with trapezoidal end 有权
标题翻译：具有梯形端的近场光产生部分的薄膜磁头
公开(公告)号：US20070177302A1
公开(公告)日：2007-08-02
申请号：US11698145
申请日：2007-01-26
申请人： Koji Shimazawa , Katsumichi Tagami
发明人： Koji Shimazawa , Katsumichi Tagami
IPC分类号： G11B5/147 , G11B5/02
CPC分类号： G11B5/314 , G11B5/3967 , G11B2005/0021
摘要： A thin-film magnetic head for a heat-assisted magnetic recording which can perform a reliable writing immediately only on a desired track by applying a near-field light to a desired position and range is provided. The head comprises: an electromagnetic coil element for writing data signals, having a pole end reaching a head end surface; and a near-field-light-generating portion for heating a portion of a magnetic recording medium during write operation by generating a near-field light, having a generation end reaching the head end surface and provided adjacent to the pole end and in the leading side of the pole end, and a shape of the generation end on the head end surface being a trapezoid with a shorter edge on the trailing side, or being a triangle with an apex on the trailing side and with a bottom on the leading side.
摘要翻译：提供了一种用于热辅助磁记录的薄膜磁头，其可以通过将近场光施加到期望的位置和范围来立即仅在期望的轨道上执行可靠的写入。头部包括：用于写入数据信号的电磁线圈元件，具有到达头端表面的极端; 以及近场光产生部分，用于通过产生近场光来在写入操作期间加热磁记录介质的一部分，其具有到达头端表面并且邻近极端设置的前端并且头端面上的发生端的形状是在后侧具有较短边缘的梯形，或者是在后侧具有顶点且在前侧具有底部的三角形。

5. 发明授权

US08481337B2 Manufacturing method of silicon spin transport device and silicon spin transport device 有权
标题翻译：硅自旋输送装置和硅自旋输送装置的制造方法
公开(公告)号：US08481337B2
公开(公告)日：2013-07-09
申请号：US12690566
申请日：2010-01-20
申请人： Tomoyuki Sasaki , Tohru Oikawa , Katsumichi Tagami
发明人： Tomoyuki Sasaki , Tohru Oikawa , Katsumichi Tagami
IPC分类号： H01L43/00
CPC分类号： H01L29/66984 , H01L29/0657 , H01L29/0684
摘要： An object of the present invention is to provide a silicon spin transport device manufacturing method and silicon spin transport device whereby improved voltage output characteristics can be obtained. The silicon spin transport device manufacturing method comprises: a first step of patterning a silicon film by wet etching and forming a silicon channel layer; and a second step of forming a magnetization free layer and a magnetization fixed layer, which are apart from each other, on the silicon channel layer.
摘要翻译：本发明的目的是提供一种硅自旋传输装置的制造方法和硅自旋传输装置，从而可获得改进的电压输出特性。硅自旋传输器件的制造方法包括：通过湿蚀刻图案化硅膜并形成硅沟道层的第一步骤; 以及在硅沟道层上形成彼此分开的无磁化层和磁化固定层的第二步骤。

6. 发明授权

US07215502B2 Magnetic recording and reproducing apparatus with trapeziodal write pole tip to avoid overwriting adjacent tracks 失效
标题翻译：具有梯形写磁头的磁记录和再现装置，以避免重写相邻轨道
公开(公告)号：US07215502B2
公开(公告)日：2007-05-08
申请号：US11136372
申请日：2005-05-25
申请人： Katsumichi Tagami
发明人： Katsumichi Tagami
IPC分类号： G11B5/187
CPC分类号： B82Y10/00 , G11B5/1278 , G11B5/1872 , G11B5/5539 , G11B5/743 , G11B5/82
摘要： A magnetic recording and reproducing apparatus includes a magnetic head having a main magnetic pole, a magnetic recording medium of a discrete type having a predetermined convex-concave structure at data tracks and servo tracks, and a drive device body that can operate to rotationally drive the magnetic recording medium in a constant direction and cause the magnetic head to be movable in substantially radial directions of the magnetic recording medium. A relationship among parameters specifying a predetermined convex-concave shape of the data track, parameters specifying the main magnetic pole, and a skew angle is defined by a predetermined inequality. By setting a specification of the magnetic recording and reproducing apparatus in the range defined by the inequality, it is possible to prevent unwanted writing into the adjacent track to thereby realize high-density recording having extremely high reliability.
摘要翻译：一种磁记录和再现装置，包括具有主磁极的磁头，在数据磁道和伺服磁道上具有预定的凸凹结构的分立型磁记录介质，以及驱动装置本体，可驱动旋转驱动磁记录介质，并使磁头能够在磁记录介质的大致半径方向上移动。通过预定的不等式定义指定数据轨道的预定凸凹形状的参数之间的关系，指定主磁极的参数和倾斜角度之间的关系。通过在由不等式限定的范围内设定磁记录和再现装置的规格，可以防止对相邻轨道的不希望的写入，从而实现具有极高可靠性的高密度记录。

7. 发明授权

US07209313B2 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：US07209313B2
公开(公告)日：2007-04-24
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。

8. 发明授权

US07158340B2 Magnetic recording and reproducing apparatus and magnetic recording medium 失效
标题翻译：磁记录和再现装置和磁记录介质
公开(公告)号：US07158340B2
公开(公告)日：2007-01-02
申请号：US11111943
申请日：2005-04-22
申请人： Katsumichi Tagami , Yoshikazu Soeno , Kazuya Shimakawa , Hiroki Matsukuma
发明人： Katsumichi Tagami , Yoshikazu Soeno , Kazuya Shimakawa , Hiroki Matsukuma
IPC分类号： G11B5/596
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/59655 , G11B5/743 , G11B5/82
摘要： The burst pattern shape in a discrete medium is set to a shape (truncated quadrangular pyramid shape) having substantially trapezoidal shapes in a track width direction and in a track circumferential direction, respectively, and a predetermined relationship is satisfied among W1, W2, Tp, and Wr where W1 represents an upper side corresponding to the surface of a convex magnetic recording layer and W2 a lower side corresponding to the lower surface of the convex magnetic recording layer in the trapezoidal shape in the track width direction, Tp represents a data track pitch of a data information recording portion, and Wr represents a read width of a magnetic head. Therefore, the burst pattern shape makes it possible to largely reduce a production load in processing and still to obtain an accurate position error signal.
摘要翻译：将离散介质中的突发图案形状分别设定为在轨道宽度方向和轨道圆周方向上具有大致梯形形状的形状（截头四角锥形状），并且在W 1，W 2， Tp和Wr，其中W 1表示对应于凸形磁记录层的表面的上侧，W 2表示与轨道宽度方向上的梯形形状的凸形磁记录层的下表面对应的下侧，Tp表示数据信息记录部分的数据磁道间距，Wr表示磁头的读宽度。因此，突发图案形状使得可以大大降低处理中的生产负荷，并且仍然获得精确的位置误差信号。

9. 发明授权

US07136252B2 Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern 失效
标题翻译：具有记录层的具有预定凸凹图案的磁记录和重放装置
公开(公告)号：US07136252B2
公开(公告)日：2006-11-14
申请号：US11113199
申请日：2005-04-25
申请人： Katsumichi Tagami
发明人： Katsumichi Tagami
IPC分类号： G11B5/62
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/1278 , G11B5/743 , G11B5/82
摘要： In the present invention, with respect to a convex-concave structure necessary for respective functions of a servo area in a perpendicular magnetic recording medium, a specification of configuration and magnetic property of a convex-concave magnetic layer of the perpendicular magnetic recording medium is set so as to overcome a demagnetizing field that accelerates thermal fluctuation. Therefore, in a magnetic recording and reproducing apparatus using the perpendicular magnetic recording medium having servo tracking signals at convex portions of the magnetic layer formed in a convex-concave pattern, it is possible to suppress degradation of the servo signals caused by the thermal fluctuation to thereby ensure a stable servo function over the long term.
摘要翻译：在本发明中，对于垂直磁记录介质中的伺服区域的功能所需的凸凹结构，设定垂直磁记录介质的凸凹磁性层的结构和磁特性的规定以克服加速热波动的退磁场。因此，在使用在凸凹图案形成的磁性层的凸部处具有伺服跟踪信号的垂直磁记录介质的磁记录和再现装置中，可以抑制由热波动引起的伺服信号的劣化从而确保长期稳定的伺服功能。

10. 发明申请

US20060132972A1 Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head 有权
标题翻译：用于垂直磁记录的薄膜磁头和薄膜磁头的制造方法
公开(公告)号：US20060132972A1
公开(公告)日：2006-06-22
申请号：US11300277
申请日：2005-12-15
申请人： Katsumichi Tagami , Tatsuya Harada , Hiroki Matsukuma , Tetsuya Roppongi , Susumu Aoki , Kazumasa Fukuda , Naoto Matono
发明人： Katsumichi Tagami , Tatsuya Harada , Hiroki Matsukuma , Tetsuya Roppongi , Susumu Aoki , Kazumasa Fukuda , Naoto Matono
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1872
摘要： A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width WC of a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: −0.15*WT=WC
摘要翻译：提供了一种薄膜磁头，其由于抖动的减小而不会在写入场中显着降低而误差率降低。头包括至少一个感应写头元件，包括：主磁极层，具有从轨道宽度方向和前端表面的两个侧端面朝着轨道宽度方向的中心部分变化的内部饱和磁通密度，后端面的宽度方向; 辅助磁极层; 以及至少一个线圈层，与主磁极层的ABS侧的后缘相邻的写入场的轮廓线的曲率宽度W C C满足以下表达式：-0.15 * 其中W T是轨道宽度，W C和W的单位是W 是纳米。

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