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公开(公告)号：US08771848B2
公开(公告)日：2014-07-08
申请号：US11544634
申请日：2006-10-10
申请人： Erol Girt , Hans J. Richter , Alexander Y. Dobin
发明人： Erol Girt , Hans J. Richter , Alexander Y. Dobin
摘要： A bit patterned magnetic recording medium, comprises a non-magnetic substrate having a surface; a plurality of spaced apart magnetic elements on the surface, each of the elements constituting a discrete magnetic domain or bit; and a layer of a ferromagnetic material for regulating magnetic exchange coupling between said magnetic elements. The layer has a saturation magnetization Ms ranging from about 1 to about 2,000 emu/cm3, preferably below about 400 emu/cm3, more preferably below about 200 emu/cm3, and may overlie, underlie, or at least partially fill spaces between adjacent magnetic elements.
摘要翻译： 一种图案化的磁记录介质，包括具有表面的非磁性基底; 表面上的多个间隔开的磁性元件，每个元件构成离散的磁畴或位; 以及用于调节所述磁性元件之间的磁交换耦合的铁磁材料层。 该层具有约1至约2,000emu / cm 3，优选低于约400emu / cm 3，更优选低于约200emu / cm 3的饱和磁化强度Ms，并且可以覆盖，基本上或至少部分地填充相邻磁性 元素。
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公开(公告)号：US20100165508A1
公开(公告)日：2010-07-01
申请号：US12347141
申请日：2008-12-31
申请人： Erol Girt , Dieter K. Weller , Alexander Y. Dobin , Bogdan F. Valcu , Thomas F. Ambrose , Yingguo Peng , Yukiko A. Kubota , Abebe Hailu
发明人： Erol Girt , Dieter K. Weller , Alexander Y. Dobin , Bogdan F. Valcu , Thomas F. Ambrose , Yingguo Peng , Yukiko A. Kubota , Abebe Hailu
IPC分类号： G11B5/82
摘要： A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy first magnetic sub-layer.
摘要翻译： 磁记录介质的垂直磁记录层包括多个位图形磁岛，其中多个岛中的每一个覆盖软磁底层。 每个磁岛包括与第二磁性子层相邻的第一磁性子层，其中第一子层具有大于第二子层的磁各向异性的相对高的磁各向异性。 磁记录层还包括延伸以连接多个岛中的每一个的第三子层。 第三子层可以具有小于每个磁岛的第二子层的磁各向异性和/或可以用作在第一子层和软磁性底层之间延伸的中间层 并且具有有助于产生更大的各向异性的第一磁性子层的结构。
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公开(公告)号：US20080085424A1
公开(公告)日：2008-04-10
申请号：US11544609
申请日：2006-10-10
申请人： Alexander Y. Dobin , Hans J. Richter , Erol Girt
发明人： Alexander Y. Dobin , Hans J. Richter , Erol Girt
IPC分类号： G11B5/64
CPC分类号： G11B5/855
摘要： A method of performing data/information recording and retrieval utilizing a multilevel patterned magnetic medium, comprises: (a) providing a magnetic recording system including a read/write head and a multilevel patterned magnetic recording medium including a plurality of spaced apart elements each comprising a stacked plurality n of magnetic recording cells with different magnetic properties and magnetically decoupled from overlying and/or underlying cells; (b) providing relative movement between the write head and magnetic recording medium; and; (c) writing to the medium by supplying the write head with a modulated write current comprising a plurality n of pulses of different magnitudes while the head moves past each element, thereby applying n different magnetic field strengths to each element, the write current including a first pulse of magnitude sufficient to write to a first cell of each element having a highest magnetic coercivity of said cells, and n−1 succeeding pulses of progressively smaller magnitude for sequentially writing to the remaining n−1 lower magnetic coercivity cells of each element but of insufficient magnitude to write to progressively higher magnetic coercivity cells; whereby the writing occurs in a single pass of the write head past each element.
摘要翻译： 一种使用多级图案化磁介质执行数据/信息记录和检索的方法包括：（a）提供磁记录系统，该磁记录系统包括读/写磁头和包含多个间隔开的元件的多层图案化磁记录介质， 堆叠多个具有不同磁性的磁记录单元，并与上覆和/或下面的单元磁解除耦合; （b）提供写入头和磁记录介质之间的相对运动; 和; （c）当头部移动通过每个元件时，通过向写入头提供包括多个n个不同幅度的脉冲的调制写入电流来写入介质，从而对每个元件施加n个不同的磁场强度，写入电流包括 具有足以写入具有所述单元的最高磁矫顽力的每个元件的第一单元的第一脉冲幅度以及逐渐变小的量级的n-1个后续脉冲，用于顺序地写入每个元件的剩余n-1个低磁性矫顽力单元，但是 数量不足以写入逐渐升高的磁矫顽力细胞; 由此写入在写入头的单次通过每个元件之后发生。
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公开(公告)号：US20100020437A1
公开(公告)日：2010-01-28
申请号：US12559205
申请日：2009-09-14
申请人： Alexander Y. Dobin , Hans J. Richter , Erol Girt
发明人： Alexander Y. Dobin , Hans J. Richter , Erol Girt
IPC分类号： G11B17/00
CPC分类号： G11B5/855
摘要： A method of performing data/information recording and retrieval utilizing a multilevel patterned magnetic medium, comprises providing a magnetic recording system including a read/write head and a multilevel patterned magnetic recording medium including a plurality of spaced apart data/information storage elements each comprising a stacked plurality n of magnetic recording cells with different magnetic properties and magnetically decoupled from overlying and/or underlying cells; providing relative movement between the write head and magnetic recording medium; and writing to the medium by supplying the write head with a modulated write current comprising a plurality n of pulses of different magnitudes while the head passes over each element, thereby applying n different magnetic field strengths to each element, the write current including a first pulse of magnitude sufficient to write to a first cell of each element having a highest magnetic coercivity of said cells, and n−1 succeeding pulses of progressively smaller magnitude for sequentially writing to the remaining n−1 lower magnetic coercivity cells of each element but of insufficient magnitude to write to progressively higher magnetic coercivity cells, such that the writing occurs in a single pass of the write head over each element.
摘要翻译： 一种使用多级图案化磁介质执行数据/信息记录和检索的方法，包括提供包括读/写头和多层图案化磁记录介质的磁记录系统，所述磁记录介质包括多个间隔开的数据/信息存储元件，每个包含一个 堆叠多个具有不同磁性的磁记录单元，并与上覆和/或下面的单元磁解除耦合; 提供写头和磁记录介质之间的相对运动; 并且当磁头通过每个元件时，通过向写入头提供包括不同幅度的多个n个脉冲的调制写入电流，从而向每个元件施加n个不同的磁场强度来写入介质，该写入电流包括第一脉冲 足以写入具有所述单元的最高磁矫顽力的每个元件的第一单元，以及逐渐变小的n-1个后续脉冲，以顺序地写入每个元件的剩余n-1个下磁性矫顽力单元，但是不足 幅度写入逐渐升高的磁矫顽力单元，使得写入在写入头的单次遍历在每个元件上发生。
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公开(公告)号：US09311948B2
公开(公告)日：2016-04-12
申请号：US12347141
申请日：2008-12-31
申请人： Erol Girt , Dieter K. Weller , Alexander Y. Dobin , Bogdan F. Valcu , Thomas F. Ambrose , Yingguo Peng , Yukiko A. Kubota , Abebe Hailu
发明人： Erol Girt , Dieter K. Weller , Alexander Y. Dobin , Bogdan F. Valcu , Thomas F. Ambrose , Yingguo Peng , Yukiko A. Kubota , Abebe Hailu
摘要： A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy first magnetic sub-layer.
摘要翻译： 磁记录介质的垂直磁记录层包括多个位图形磁岛，其中多个岛中的每一个覆盖软磁底层。 每个磁岛包括与第二磁性子层相邻的第一磁性子层，其中第一子层具有大于第二子层的磁各向异性的相对高的磁各向异性。 磁记录层还包括延伸以连接多个岛中的每一个的第三子层。 第三子层可以具有小于每个磁岛的第二子层的磁各向异性和/或可以用作在第一子层和软磁性底层之间延伸的中间层 并且具有有助于产生更大的各向异性的第一磁性子层的结构。
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公开(公告)号：US07974036B2
公开(公告)日：2011-07-05
申请号：US12194264
申请日：2008-08-19
申请人： Shih-Fu Lee , Alexander Y. Dobin , Dave M. Tung , David S. Kuo
发明人： Shih-Fu Lee , Alexander Y. Dobin , Dave M. Tung , David S. Kuo
IPC分类号： G11B5/09
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/02 , G11B5/743 , G11B5/746 , G11B5/855 , G11B20/10009 , G11B20/10222 , G11B20/1217 , G11B20/1879 , G11B2005/0005 , G11B2220/2516
摘要： Systems and methods are provided for correcting write synchronization of a magnetic storage device with respect to magnetic storage media and its corresponding writable magnetic bits, or dots. In particular, these systems and methods involve using time-shifting principles to calibrate the magnetic storage devices to correct slow drifts of reader-writer timing. It is to be appreciated that time-shifting techniques can be applied in a variety of manners. For example, the very dots on the media can be positioned in time-shifted fashion. In another example, the writing to the dots can be time-shifted.
摘要翻译： 提供了用于校正磁存储装置相对于磁存储介质及其对应的可写磁性位或点的写入同步的系统和方法。 特别地，这些系统和方法涉及使用时移原理来校准磁存储设备以校正读写器定时的慢漂移。 应当理解，时变技术可以以各种方式应用。 例如，介质上的点可以以时间偏移的方式定位。 在另一个例子中，对点的写入可以被时移。
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公开(公告)号：US07974031B2
公开(公告)日：2011-07-05
申请号：US12559205
申请日：2009-09-14
申请人： Alexander Y Dobin , Hans J Richter , Erol Girt
发明人： Alexander Y Dobin , Hans J Richter , Erol Girt
IPC分类号： G11B20/16
CPC分类号： G11B5/855
摘要： A method of performing data/information recording and retrieval utilizing a multilevel patterned magnetic medium, comprises providing a magnetic recording system including a read/write head and a multilevel patterned magnetic recording medium including a plurality of spaced apart data/information storage elements each comprising a stacked plurality n of magnetic recording cells with different magnetic properties and magnetically decoupled from overlying and/or underlying cells; providing relative movement between the write head and magnetic recording medium; and writing to the medium by supplying the write head with a modulated write current comprising a plurality n of pulses of different magnitudes while the head passes over each element, thereby applying n different magnetic field strengths to each element, such that the writing occurs in a single pass of the write head over each element.
摘要翻译： 一种使用多级图案化磁介质执行数据/信息记录和检索的方法，包括提供包括读/写头和多层图案化磁记录介质的磁记录系统，所述磁记录介质包括多个间隔开的数据/信息存储元件，每个包含一个 堆叠多个具有不同磁性的磁记录单元，并与上覆和/或下面的单元磁解除耦合; 提供写头和磁记录介质之间的相对运动; 并且当头部通过每个元件时，通过向写入头提供包括不同幅度的多个n个脉冲的调制写入电流，从而向每个元件施加n个不同的磁场强度，从而写入到介质，使得写入发生在 写入头的单遍通过每个元素。
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公开(公告)号：US20100046118A1
公开(公告)日：2010-02-25
申请号：US12194264
申请日：2008-08-19
申请人： Shih-Fu Lee , Alexander Y. Dobin , Dave M. Tung , David S. Kuo
发明人： Shih-Fu Lee , Alexander Y. Dobin , Dave M. Tung , David S. Kuo
IPC分类号： G11B5/82
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/02 , G11B5/743 , G11B5/746 , G11B5/855 , G11B20/10009 , G11B20/10222 , G11B20/1217 , G11B20/1879 , G11B2005/0005 , G11B2220/2516
摘要： Systems and methods are provided for correcting write synchronization of a magnetic storage device with respect to magnetic storage media and its corresponding writable magnetic bits, or dots. In particular, these systems and methods involve using time-shifting principles to calibrate the magnetic storage devices to correct slow drifts of reader-writer timing. It is to be appreciated that time-shifting techniques can be applied in a variety of manners. For example, the very dots on the media can be positioned in time-shifted fashion. In another example, the writing to the dots can be time-shifted.
摘要翻译： 提供了用于校正磁存储装置相对于磁存储介质及其对应的可写磁性位或点的写入同步的系统和方法。 特别地，这些系统和方法涉及使用时移原理来校准磁存储设备以校正读写器定时的慢漂移。 应当理解，时变技术可以以各种方式应用。 例如，介质上的点可以以时间偏移的方式定位。 在另一个例子中，对点的写入可以被时移。
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公开(公告)号：US20080085425A1
公开(公告)日：2008-04-10
申请号：US11544634
申请日：2006-10-10
申请人： Erol Girt , Hans J. Richter , Alexander Y. Dobin
发明人： Erol Girt , Hans J. Richter , Alexander Y. Dobin
IPC分类号： G11B5/64
摘要： A bit patterned magnetic recording medium, comprises a non-magnetic substrate having a surface; a plurality of spaced apart magnetic elements on the surface, each of the elements constituting a discrete magnetic domain or bit; and a layer of a ferromagnetic material for regulating magnetic exchange coupling between said magnetic elements. The layer has a saturation magnetization Ms ranging from about 1 to about 2,000 emu/cm3, preferably below about 400 emu/cm3, more preferably below about 200 emu/cm3, and may overlie, underlie, or at least partially fill spaces between adjacent magnetic elements.
摘要翻译： 一种图案化的磁记录介质，包括具有表面的非磁性基底; 表面上的多个间隔开的磁性元件，每个元件构成离散的磁畴或位; 以及用于调节所述磁性元件之间的磁交换耦合的铁磁材料层。 该层具有约1至约2,000emu / cm 3，优选低于约400emu / cm 3的饱和磁化强度M s， 更优选低于约200emu / cm 3，并且可以覆盖，基本上或至少部分地填充相邻磁性元件之间的空间。
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