-
1.发明申请Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 失效薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器公开(公告)号：US20070217066A1
公开(公告)日：2007-09-20
申请号：US11802297
申请日：2007-05-22
IPC分类号： G11B5/127
CPC分类号： G11B5/3906 , G11B5/1278
摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field exceeding 10 kOe (oersted), while also modified to suppress remanent magnetic fields occurring immediately after writing operation. In a perpendicular magnetic head comprising a main pole, a return path for supplying a magnetic flux to that main pole, and an conductive coil for excitation of the main pole and return path, the main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer, the low saturation flux density layer has a thickness within 0.5 to 5 nanometers, the high saturation flux density layer has a thickness from 10 to 50 nanometers for suppressing remanent magnetization and preventing erasing after writing by utilizing a closed magnetic domain structure in the pole.
摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生超过10kOe（奥斯特）的高磁记录场，同时还被修改以抑制写入后立即发生的残留磁场 操作。 在包括主极，用于向该主极提供磁通的返回路径和用于激励主极返回路径的导电线圈的垂直磁头中，主极的极宽为200纳米以下， 以及由高饱和磁通密度层和低饱和磁通密度层组成的磁性层，低饱和磁通密度层的厚度在0.5〜5纳米之间，高饱和磁通密度层的厚度为10〜50纳米， 通过利用极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。
-
2.发明授权Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 有权薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器公开(公告)号：US07813079B2
公开(公告)日：2010-10-12
申请号：US12255306
申请日：2008-10-21
CPC分类号： G11B5/3906 , G11B5/1278
摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field, while also being modified to suppress remanent magnetic fields occurring immediately after writing operation. A return path is provided for supplying a magnetic flux to the main pole, and an conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer and the high saturation flux density suppress remanent magnetization and prevent erasing after writing by utilizing a closed magnetic domain structure in the pole.
摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生高磁记录场，同时还进行修改以抑制在写入操作之后立即发生的剩余磁场。 提供用于向主极提供磁通量的返回路径和用于激励主极和返回路径的导电线圈。 主极的极宽为200nm以下，由高饱和磁通密度层和低饱和磁通密度层构成的磁性层叠体。 低饱和磁通密度层和高饱和磁通密度通过利用磁极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。
-
3.发明申请THIN FILM PERPENDICULAR MAGNETIC RECORDING HEAD, THEIR FABRICATION PROCESS AND MAGNETIC DISK DRIVE USING IT 有权薄膜电磁记录头，其制造工艺和使用其的磁性磁盘驱动器公开(公告)号：US20090059425A1
公开(公告)日：2009-03-05
申请号：US12255306
申请日：2008-10-21
IPC分类号： G11B5/33
CPC分类号： G11B5/3906 , G11B5/1278
摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field, while also being modified to suppress remanent magnetic fields occurring immediately after writing operation. A return path is provided for supplying a magnetic flux to the main pole, and an conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer and the high saturation flux density suppress remanent magnetization and prevent erasing after writing by utilizing a closed magnetic domain structure in the pole.
摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生高磁记录场，同时还进行修改以抑制在写入操作之后立即发生的剩余磁场。 提供用于向主极提供磁通量的返回路径和用于激励主极和返回路径的导电线圈。 主极的极宽为200nm以下，由高饱和磁通密度层和低饱和磁通密度层构成的磁性层叠体。 低饱和磁通密度层和高饱和磁通密度通过利用磁极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。
-
4.发明授权Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 有权薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器公开(公告)号：US08085499B2
公开(公告)日：2011-12-27
申请号：US12888621
申请日：2010-09-23
CPC分类号： G11B5/3906 , G11B5/1278
摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field, while also being modified to suppress remanent magnetic fields occurring immediately after writing operation. A return path is provided for supplying a magnetic flux to the main pole, and an conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer and the high saturation flux density suppress remanent magnetization and prevent erasing after writing by utilizing a closed magnetic domain structure in the pole.
摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生高磁记录场，同时还进行修改以抑制在写入操作之后立即发生的剩余磁场。 提供用于向主极提供磁通量的返回路径和用于激励主极和返回路径的导电线圈。 主极的极宽为200nm以下，由高饱和磁通密度层和低饱和磁通密度层构成的磁性层叠体。 低饱和磁通密度层和高饱和磁通密度通过利用磁极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。
-
5.发明授权Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 失效薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器公开(公告)号：US07221538B2
公开(公告)日：2007-05-22
申请号：US10644022
申请日：2003-08-20
CPC分类号： G11B5/3906 , G11B5/1278
摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field exceeding 10 kOe while suppressing remanent magnetic fields occurring immediately after write operations. The perpendicular magnetic head comprises a main pole, a return path for supplying a magnetic flux to that main pole, and a conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer has a thickness within 0.5 to 5 nanometers, and The high saturation flux density layer has a thickness from 10 to 50.
摘要翻译： 具有能够记录密度高达100吉比特/平方英寸的窄主磁极的薄膜垂直磁头，并且在写入操作之后立即产生高磁记录场超过10kOe，同时抑制残留的磁场。 垂直磁头包括主极，用于向该主极提供磁通的返回路径和用于激励主极和返回路径的导电线圈。 主极的极宽为200nm以下，由高饱和磁通密度层和低饱和磁通密度层构成的磁性层叠体。 低饱和磁通密度层的厚度为0.5〜5纳米，高饱和磁通密度层的厚度为10〜50。
-
6.发明授权Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 失效薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器公开(公告)号：US07532433B2
公开(公告)日：2009-05-12
申请号：US11802297
申请日：2007-05-22
CPC分类号： G11B5/3906 , G11B5/1278
摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field, while also being modified to suppress remanent magnetic fields occurring immediately after writing operation. A return path is provided for supplying a magnetic flux to the main pole, and an conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer and the high saturation flux density suppress remanent magnetization and prevent erasing after writing by utilizing a closed magnetic domain structure in the pole.
摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生高磁记录场，同时还进行修改以抑制在写入操作之后立即发生的剩余磁场。 提供用于向主极提供磁通量的返回路径和用于激励主极和返回路径的导电线圈。 主极的极宽为200nm以下，由高饱和磁通密度层和低饱和磁通密度层构成的磁性层叠体。 低饱和磁通密度层和高饱和磁通密度通过利用磁极中的闭合磁畴结构来抑制剩余磁化并防止写入后的擦除。
-
7.发明授权Magnetic head for perpendicular recording including a main pole having a pole tip with three tapered sides 失效用于垂直记录的磁头，包括具有三个锥形侧面的极尖的主极公开(公告)号：US07038881B2
公开(公告)日：2006-05-02
申请号：US10648344
申请日：2003-08-27
申请人： Kenchi Ito , Yoshiaki Kawato , Masafumi Mochizuki
发明人： Kenchi Ito , Yoshiaki Kawato , Masafumi Mochizuki
CPC分类号： G11B5/012 , G11B5/1278 , G11B5/1871 , G11B5/4886 , G11B2005/0029 , Y10T29/49052
摘要： The invention provides a magnetic head for perpendicular recording capable of recording with high linear recording density and high track density, and a magnetic disk drive incorporating the same. In order to achieve this, one or more sides of the main pole of the magnetic head for perpendicular recording except for the trailing side are formed in a taper with an appropriate angle against the tip surface of the main pole, and the yoke whose widest principal plane is in parallel to the tip surface is provided on the bottom of the main pole.Thereby, the invention achieves the magnetic head for perpendicular recording that generates a sufficiently high magnetic field, and assumes a sharp gradient of magnetic field on the trailing side. By incorporating this magnetic head, a magnetic disk drive capable of handling high linear recording density can be produced.
摘要翻译： 本发明提供一种用于能够以高线性记录密度和高轨道密度进行记录的垂直记录磁头和包含该磁头的磁盘驱动器。 为了实现这一点，用于垂直记录的磁头的主极的除了后侧之外的一个或多个侧面以相对于主极的尖端表面具有适当角度的锥形形成，并且最主要的轭 平面与顶表面平行设置在主极的底部。 因此，本发明实现了用于垂直记录的磁头，其产生足够高的磁场，并且在后侧呈现尖锐的磁场梯度。 通过并入该磁头，可以产生能够处理高线性记录密度的磁盘驱动器。
-
8.发明申请Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same 失效用于垂直记录的磁头和使用该磁头的磁记录盘装置公开(公告)号：US20050185335A1
公开(公告)日：2005-08-25
申请号：US11116301
申请日：2005-04-28
申请人： Atsushi Nakamura , Masafumi Mochizuki , Tomohiro Okada , Kimitoshi Etoh , Isao Nunokawa , Yoshiaki Kawato
发明人： Atsushi Nakamura , Masafumi Mochizuki , Tomohiro Okada , Kimitoshi Etoh , Isao Nunokawa , Yoshiaki Kawato
CPC分类号： G11B5/1871 , G11B5/127 , G11B5/1278 , G11B5/187 , G11B5/3146
摘要： A magnetic head includes a main pole having a first portion with a length (W1) in a cross-track direction which continuously increases from a leading edge side to a trailing edge side, a second portion formed on a trailing edge side of the first portion, and a third portion formed on a trailing edge side of the second portion. A length (W2) in the cross-track direction of a boundary line between the second portion and the third portion is longer than W1, and a length (W3) in the cross-track direction of a trailing edge of a third portion is substantially equal to W2.
摘要翻译： 磁头包括主极，该主极具有在从前缘侧到后缘侧连续增大的横向方向上的长度（W 1）的第一部分，形成在第一部分的后缘侧的第二部分 部分，以及形成在第二部分的后缘侧上的第三部分。 在第二部分和第三部分之间的边界线的横向方向上的长度（W 2）比W 1长，并且第三部分的后缘的横向方向上的长度（W 3） 部分基本上等于W 2。
-
9.发明申请公开(公告)号：US20050057853A1
公开(公告)日：2005-03-17
申请号：US10974807
申请日：2004-10-28
申请人： Atsushi Nakamura , Masafumi Mochizuki , Tomohiro Okada , Kimitoshi Etoh , Isao Nunokawa , Yoshiaki Kawato
发明人： Atsushi Nakamura , Masafumi Mochizuki , Tomohiro Okada , Kimitoshi Etoh , Isao Nunokawa , Yoshiaki Kawato
CPC分类号： G11B5/1871 , G11B5/127 , G11B5/1278 , G11B5/187 , G11B5/3146
摘要： A magnetic head having at least a main pole having a profile on a magnetic head air bearing surface composed of a first portion having a length in a cross-track direction which continuously increases from a leading edge to a trailing edge, and a second portion located on the side of the trailing edge of the first portion. A length of the second portion in the cross-track direction at the trailing edge is substantially equal to a length in the cross-track direction at the point of contact between the first and second portions. A rate of change in the length of the second portion in the cross-track direction from the leading edge to the trailing edge is different from a rate of increase in the length of the first portion in the cross-track direction.
摘要翻译： 一种磁头，其至少具有在磁头空气轴承表面上具有轮廓的主极，该磁头由从前缘到后缘连续增加的横向方向上的长度的第一部分和位于 在第一部分的后缘侧。 在后缘处的交叉轨道方向上的第二部分的长度基本上等于第一和第二部分之间的接触点处的交叉轨道方向上的长度。 从前缘到后缘的交叉轨道方向上的第二部分的长度的变化率与跨轨道方向上的第一部分的长度的增加速率不同。
-
10.发明授权Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same 失效用于垂直记录的磁头和使用该磁头的磁记录盘装置公开(公告)号：US06813116B2
公开(公告)日：2004-11-02
申请号：US10314156
申请日：2002-12-09
申请人： Atsushi Nakamura , Masafumi Mochizuki , Tomohiro Okada , Kimitoshi Etoh , Isao Nunokawa , Yoshiaki Kawato
发明人： Atsushi Nakamura , Masafumi Mochizuki , Tomohiro Okada , Kimitoshi Etoh , Isao Nunokawa , Yoshiaki Kawato
IPC分类号： G11B5187
CPC分类号： G11B5/1871 , G11B5/127 , G11B5/1278 , G11B5/187 , G11B5/3146
摘要： A single-pole type magnetic head for perpendicular recording which reduces the amount of side writing even in the presence of a yaw angle and prevents the effective track width from decreasing, and a magnetic recording disk apparatus using the same. A main pole is composed of at least two portions where the width of the first portion continuously increases from the upstream side to the downstream side in the medium moving direction and the width of the second portion is the same as the width of the first portion's downstream edge in the medium moving direction and is constant from the upstream side to the downstream side in the medium moving direction. This prevents the recording magnetic field strength from decreasing at the track edge and increases the effective track width while suppressing side writing, thereby realizing a magnetic recording disk apparatus with a high track density.
摘要翻译： 一种用于垂直记录的单极型磁头，即使在存在偏航角的情况下也减少了侧面写入量，并且防止了有效轨道宽度的减小，以及使用该磁头的磁记录盘装置。 主极由至少两个部分组成，其中第一部分的宽度在介质移动方向上从上游侧到下游侧连续增加，第二部分的宽度与第一部分的下游的宽度相同 在介质移动方向上边缘并且在介质移动方向上从上游侧到下游侧是恒定的。 这防止记录磁场强度在轨道边缘处减小，并且在抑制侧面写入的同时增加有效轨道宽度，从而实现具有高轨道密度的磁记录盘装置。
-
-
-
-
-
-
-
-
-
搜索结果
126 条记录 (耗时 0.034 秒)
