-
1.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。
-
2.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。
-
3.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。
-
4.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。
-
5.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。
-
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：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。
-
7.发明授权Magnetic recording/reproducing device with a function of correcting waveform of magnetoresistive-effect head 失效具有校正磁阻效应头的波形功能的磁记录/重放装置
公开(公告)号：US5969896A
公开(公告)日：1999-10-19
申请号：US778761
申请日：1997-01-06
CPC分类号： G11B5/012 , B82Y10/00 , B82Y25/00 , G11B5/02 , G11B5/465 , G11B2005/0008 , G11B2005/001 , G11B2005/0016 , G11B2005/3996
摘要： A magnetic recording/reproducing device has an inductive write element provided with a coil and magnetic cores for recording information on a medium, a magnetoresistive read element for transducing a change in a magnetic field leaking from a medium, on which information is recorded, into an electrical signal, a detector for detecting an output signal of the read element, a bias field applying unit for applying a bias field to the read element, and a recording/reproducing operation controller for reproducing information based on an output signal from the read element and for controlling the recording current applying unit based on an inputted signal to record information. The recording/reproducing operation control unit has a stabilizing unit for controlling the bias field applying unit to make an absolute value of the bias field in a state where a magnetic field leaking from the medium is applied to the read element larger than that during a normal reproducing operation.
摘要翻译： 磁记录/再现装置具有设置有线圈的感应写入元件和用于在介质上记录信息的磁芯，用于将从记录有信息的介质泄漏的磁场的变化转换成磁阻读取元件的磁阻读取元件 电信号，用于检测读取元件的输出信号的检测器，用于向读取元件施加偏置场的偏置场施加单元，以及用于基于来自读取元件的输出信号再现信息的记录/再现操作控制器，以及 用于基于输入的信号控制记录电流施加单元以记录信息。 记录/再现操作控制单元具有稳定单元，用于控制偏置场施加单元，以使得从介质泄漏的磁场到读取元件的状态中的偏置场的绝对值大于正常情况下的偏移场的绝对值 再现操作。
-
公开(公告)号：US07426091B2
公开(公告)日：2008-09-16
申请号：US11393684
申请日：2006-03-31
IPC分类号： G11B5/147
CPC分类号： G11B5/1278
摘要： The disclosed invention provides a magnetic head of high stability in which “erase after write” is prevented. Here is provided a magnetic head comprising a thin-film magnetic head for perpendicular magnetic recording, the thin-film magnetic head including a main pole with its tip facing a magnetic recording medium and coils for exciting the main pole, wherein the tip of or at least a part of the main pole consists of a soft magnetic multilayer containing laminations, each of which comprises a first ferromagnetic film, a second ferromagnetic film, and an antiparallel coupling layer formed between the first ferromagnetic film and the second ferromagnetic film, wherein the antiparallel coupling layer causes antiferromagnetic interlayer coupling of the first ferromagnetic film and the second ferromagnetic film.
摘要翻译： 所公开的发明提供了一种高稳定性的磁头，其中防止“写入后擦除”。 这里提供了一种磁头，其包括用于垂直磁记录的薄膜磁头，该薄膜磁头包括一个主极，其顶端面向磁记录介质和用于激励主极的线圈，其中尖端或 主极的至少一部分由包含叠层的软磁性多层组成，每层包含第一铁磁膜，第二铁磁膜和形成在第一铁磁膜和第二铁磁膜之间的反并联耦合层，其中反平行 耦合层引起第一铁磁膜和第二铁磁膜的反铁磁层间耦合。
-
公开(公告)号：US20060164759A1
公开(公告)日：2006-07-27
申请号：US11393684
申请日：2006-03-31
IPC分类号： G11B5/147
CPC分类号： G11B5/1278
摘要： The disclosed invention provides a magnetic head of high stability in which “erase after write” is prevented. Here is provided a magnetic head comprising a thin-film magnetic head for perpendicular magnetic recording, the thin-film magnetic head including a main pole with its tip facing a magnetic recording medium and coils for exciting the main pole, wherein the tip of or at least a part of the main pole consists of a soft magnetic multilayer containing laminations, each of which comprises a first ferromagnetic film, a second ferromagnetic film, and an antiparallel coupling layer formed between the first ferromagnetic film and the second ferromagnetic film, wherein the antiparallel coupling layer causes antiferromagnetic interlayer coupling of the first ferromagnetic film and the second ferromagnetic film.
-
公开(公告)号：US07057853B2
公开(公告)日：2006-06-06
申请号：US10610792
申请日：2003-07-02
IPC分类号： G11B5/147
CPC分类号： G11B5/1278
摘要： The disclosed invention provides a magnetic head of high stability in which “erase after write” is prevented. Here is provided a magnetic head comprising a thin-film magnetic head for perpendicular magnetic recording, the thin-film magnetic head including a main pole with its tip facing a magnetic recording medium and coils for exciting the main pole, wherein the tip of or at least a part of the main pole consists of a soft magnetic multilayer containing laminations, each of which comprises a first ferromagnetic film, a second ferromagnetic film, and an antiparallel coupling layer formed between the first ferromagnetic film and the second ferromagnetic film, wherein the antiparallel coupling layer causes antiferromagnetic interlayer coupling of the first ferromagnetic film and the second ferromagnetic film.
摘要翻译： 所公开的发明提供了一种高稳定性的磁头，其中防止“写入后擦除”。 这里提供了一种磁头，其包括用于垂直磁记录的薄膜磁头，该薄膜磁头包括一个主极，其顶端面向磁记录介质和用于激励主极的线圈，其中尖端或 主极的至少一部分由包含叠层的软磁性多层组成，每层包含第一铁磁膜，第二铁磁膜和形成在第一铁磁膜和第二铁磁膜之间的反并联耦合层，其中反平行 耦合层引起第一铁磁膜和第二铁磁膜的反铁磁层间耦合。
-
-
-
-
-
-
-
-
-
搜索结果
52 条记录 (耗时 0.024 秒)
