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公开(公告)号：US20080075978A1
公开(公告)日：2008-03-27
申请号：US11525958
申请日：2006-09-25
摘要： A bit patterned magnetic recording medium comprises a substrate having a surface, and a plurality of spaced apart magnetic elements on the surface, each element constituting a discrete magnetic domain or bit of the same structure and comprised of a stack of thin film layers including in order from the substrate surface: a seed layer; and a perpendicular magnetic recording layer in contact with a surface of the seed layer and comprising a Co1-x-yPtxCry alloy material, where 0.05≦x≦0.35 and 0≦y≦0.15. The Co1-x-yPtxCry alloy material has a first order magnetic anisotropy constant K, up to about 2×107 erg/cm3, a saturation magnetization Ms up to about 1200 emu/cm3, an anisotropy field HK=2K1/Ms up to about 35 kOe, a hexagonal (0001) crystal structure with c-axis perpendicular to a surface thereof, and an X-Ray diffraction (XRD) rocking curve with a full width at half maximum (FWHM) of ˜5° or less.
摘要翻译： 有位图案化的磁记录介质包括具有表面的衬底和表面上的多个间隔开的磁性元件，每个元件构成相同结构的离散磁畴或位，并且由一层薄膜层组成，包括顺序 从基底表面：种子层; 以及与籽晶层的表面接触并且包括Co 1-xy Pt 3 x Cr Cr合金材料的垂直磁记录层， 其中0.05 <= x <= 0.35且0 <= y <= 0.15。 合金材料具有一级磁各向异性常数K，高达约2×10 7Ω/ / SUP> erg / cm 3，饱和磁化强度M s高达约1200emu / cm 3，各向异性场H < 具有C轴垂直于其表面的六边形（0001）晶体结构，并且至少约为35kOe， X射线衍射（XRD）摇摆曲线半峰全宽（FWHM）为〜5°以下。
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公开(公告)号：US08673466B2
公开(公告)日：2014-03-18
申请号：US11525958
申请日：2006-09-25
IPC分类号： G11B5/66
摘要： A bit patterned magnetic recording medium comprises a substrate having a surface, and a plurality of spaced apart magnetic elements on the surface, each element constituting a discrete magnetic domain or bit of the same structure and comprised of a stack of thin film layers including in order from the substrate surface: a seed layer; and a perpendicular magnetic recording layer in contact with a surface of the seed layer and comprising a Co 1-x-yPtxCry alloy material, where 0.05≦x≦0.35 and 0≦y≦0.15. The Co1-x-yPtxCry alloy material has a first order magnetic anisotropy constant K1 up to about 2×107 erg/cm3, a saturation magnetization Ms up to about 1200 emu/cm3, an anisotropy field HK=2K1/Ms up to about 35 kOe, a hexagonal (0001) crystal structure with c-axis perpendicular to a surface thereof, and an X-Ray diffraction (XRD) rocking curve with a full width at half maximum (FWHM) of ˜5° or less.
摘要翻译： 位图形磁记录介质包括具有表面的基板和表面上的多个间隔开的磁性元件，每个元件构成相同结构的离散磁畴或位，并且包括一层薄层， 从基底表面：种子层; 以及与种子层的表面接触并包括Co 1-x-yPt x Cry合金材料的垂直磁记录层，其中0.05≤x≤0.35和0≤y≤0.15。 Co1-x-yPtxCry合金材料具有高达约2×107erg / cm3的一阶磁各向异性常数K1，高达约1200emu / cm3的饱和磁化强度Ms，高达约35的各向异性磁场HK = 2K1 / Ms kOe，具有垂直于其表面的c轴的六边形（0001）晶体结构，以及具有约5°或更小的全半宽度（FWHM）的X射线衍射（XRD）摇摆曲线。
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3.发明授权Stabilized recording media including coupled discontinuous and continuous magnetic layers 有权稳定的记录介质包括耦合不连续和连续的磁性层公开(公告)号：US06777112B1
公开(公告)日：2004-08-17
申请号：US09971693
申请日：2001-10-09
IPC分类号： G17B566
CPC分类号： G11B5/66 , G11B5/732 , G11B5/7325 , G11B5/855 , Y10S428/90 , Y10T428/24942 , Y10T428/265
摘要： A magnetic recording medium having increased thermal stability and signal-to-medium noise ratio (SMNR), comprising a layer stack including, in sequence: (a) a continuous ferromagnetic layer; (b) a non-magnetic spacer layer; and (c) a discontinuous ferromagnetic layer; wherein the continuous ferromagnetic layer (a) and the discontinuous ferromagnetic layer (c) are ferromagnetically or anti-ferromagnetically coupled together across the non-magnetic spacer layer.
摘要翻译： 一种具有增加的热稳定性和信号与中等噪声比（SMNR）的磁记录介质，包括层叠，其顺序包括：（a）连续铁磁层;（b）非磁性间隔层; 和（c）不连续的铁磁层;其中所述连续铁磁层（a）和所述不连续铁磁层（c）在非磁性间隔层上铁磁或反铁磁耦合在一起。
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公开(公告)号：US07407719B1
公开(公告)日：2008-08-05
申请号：US10829164
申请日：2004-04-22
申请人： Erol Girt , Li-Lien Lee , Samuel D. Harkness, IV
发明人： Erol Girt , Li-Lien Lee , Samuel D. Harkness, IV
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/65 , G11B5/7325
摘要： A novel method of manufacturing a longitudinal granular oxide recording medium is disclosed. The method preferably entails obtaining a non-magnetic substrate, heating the substrate at a temperature T1 that is greater than 150° C., forming a first layer with body-centered cubic atomic structure and with a preferred growth orientation, cooling the substrate to a temperature T2 and forming a second layer comprising a magnetic oxide-containing granular magnetic layer with a hexagonal close packed atomic structure and with a preferred growth orientation. The magnetic oxide-containing granular magnetic layer contains magnetic crystal grains that are substantially isolated by an inter-granular region comprising a non-magnetic substance, wherein the non-magnetic substance is preferably an oxide-containing material.
摘要翻译： 公开了制造纵向粒状氧化物记录介质的新颖方法。 该方法优选需要获得非磁性衬底，在大于150℃的温度T 1加热衬底，形成具有体心立方原子结构的第一层， 200>优选的生长方向，将衬底冷却至温度T 2，并形成包含具有六方密堆积原子结构的含氧化物的颗粒状磁性层的第二层，并且具有<11-20> 首选生长方向。 含有磁氧化物的粒状磁性层含有通过包含非磁性物质的颗粒间区域基本隔离的磁性晶粒，其中非磁性物质优选为含氧化物的材料。
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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：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：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：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：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：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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