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1.发明申请PERPENDICULAR RECORDING MAGNETIC MEDIA HAVING A GRANULAR MAGNETIC RECORDING LAYER AND AN AMORPHOUS SOFT UNDERLAYER 审中-公开具有颗粒磁记录层和非线性软底层的全磁记录磁介质公开(公告)号：US20090214896A1
公开(公告)日：2009-08-27
申请号：US12463869
申请日：2009-05-11
摘要： A perpendicular magnetic recording medium having a substrate, an amorphous soft underlayer of thickness 30 nm or greater, and a granular magnetic recording layer for perpendicular recording is disclosed. The granular magnetic recording layer includes a non-magnetic region between magnetic grains, wherein the non-magnetic region includes metal nitride or metal carbide and provides exchange decoupling between the magnetic grains. The perpendicular recording medium of this invention reduces DC noise and increases media signal-to-noise ratio; it reduces surface roughness, which in turn reduces the head-to-media spacing and the head-to-amorphous soft underlayer spacing.
摘要翻译： 公开了具有基板，厚度为30nm以上的无定形软底层和用于垂直记录的粒状磁记录层的垂直磁记录介质。 颗粒状磁记录层包括磁性颗粒之间的非磁性区域，其中非磁性区域包括金属氮化物或金属碳化物，并提供磁性颗粒之间的交换去耦合。 本发明的垂直记录介质降低了DC噪声并提高了介质信噪比; 它降低了表面粗糙度，这反过来降低了头对媒体间距和头对非软的软下层间距。
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公开(公告)号：US08147996B2
公开(公告)日：2012-04-03
申请号：US11145938
申请日：2005-06-07
申请人： Qixu Chen , Charles Frederick Brucker , Chung-Hee Chang , Thomas Patrick Nolan , Samuel Dacke Harkness, IV
发明人： Qixu Chen , Charles Frederick Brucker , Chung-Hee Chang , Thomas Patrick Nolan , Samuel Dacke Harkness, IV
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： A recording medium having a substrate, a first soft magnetic underlayer, a second soft magnetic underlayer and a perpendicular magnetic recording layer without a spacer layer between the first and second soft magnetic underlayers is disclosed.
摘要翻译： 公开了一种具有衬底，第一软磁性底层，第二软磁性底层和在第一和第二软磁性底层之间没有间隔层的垂直磁记录层的记录介质。
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3.发明授权Magnetic recording media with tuned exchange coupling and method for fabricating same 有权具有调谐交换耦合的磁记录介质及其制造方法公开(公告)号：US07384699B2
公开(公告)日：2008-06-10
申请号：US10902956
申请日：2004-08-02
IPC分类号： G11B5/66
摘要： A magnetic recording medium with tuned exchange coupling comprises: (a) a non-magnetic substrate having a surface; and (b) a stack of thin film layers on the substrate surface, including: (i) a compositionally segregated, exchange decoupled magnetic layer with substantially non-magnetic grain boundaries; and (ii) an exchange coupled magnetic layer adjacent to and in direct contact with the exchange decoupled magnetic layer.
摘要翻译： 具有调谐交换耦合的磁记录介质包括：（a）具有表面的非磁性基底; 和（b）衬底表面上的一叠薄膜层，包括：（i）具有基本上非磁性晶界的成分分离的交换去耦磁性层; 和（ii）与交换去耦磁性层相邻并直接接触的交换耦合磁性层。
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4.发明授权公开(公告)号：US07531248B1
公开(公告)日：2009-05-12
申请号：US11017657
申请日：2004-12-22
IPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, an amorphous soft underlayer of thickness 30 nm or greater, and a granular magnetic recording layer for perpendicular recording is disclosed. The granular magnetic recording layer includes a non-magnetic region between magnetic grains, wherein the non-magnetic region includes metal nitride or metal carbide and provides exchange decoupling between the magnetic grains. The perpendicular recording medium of this invention reduces DC noise and increases media signal-to-noise ratio; it reduces surface roughness, which in turn reduces the head-to-media spacing and the head-to-amorphous soft underlayer spacing.
摘要翻译： 公开了具有基板，厚度为30nm以上的无定形软底层和用于垂直记录的粒状磁记录层的垂直磁记录介质。 颗粒状磁记录层包括磁性颗粒之间的非磁性区域，其中非磁性区域包括金属氮化物或金属碳化物，并提供磁性颗粒之间的交换去耦合。 本发明的垂直记录介质降低了DC噪声并提高了介质信噪比; 它降低了表面粗糙度，这反过来降低了头对媒体间距和头对非软的软下层间距。
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5.发明授权Apparatus including a perpendicular magnetic recording layer having a convex magnetic anisotropy profile 有权包括具有凸磁各向异性轮廓的垂直磁记录层的装置公开(公告)号：US09142240B2
公开(公告)日：2015-09-22
申请号：US12847745
申请日：2010-07-30
摘要： An apparatus may include a first magnetic layer, a first exchange break layer formed on the first magnetic layer, a second magnetic layer formed on the first exchange break layer, a second exchange break layer formed on the second magnetic layer, and a third magnetic layer formed on the second exchange break layer. The first magnetic layer has a first magnetic anisotropy energy, Hk1, the second magnetic layer has a second magnetic anisotropy energy, Hk2, and the third magnetic layer has a third magnetic anisotropy energy, Hk3. In some embodiments, Hk1−Hk2 is less than Hk2−Hk3. In some embodiments, the apparatus may be a perpendicular magnetic recording medium.
摘要翻译： 一种装置可以包括第一磁性层，形成在第一磁性层上的第一交换破坏层，形成在第一交换断裂层上的第二磁性层，形成在第二磁性层上的第二交换破坏层，第三磁性层 形成在第二交换断层上。 第一磁性层具有第一磁各向异性能H k1，第二磁性层具有第二磁各向异性能H k2，第三磁性层具有第三磁各向异性能H k3。 在一些实施方案中，Hk1-Hk2小于Hk2-Hk3。 在一些实施例中，该装置可以是垂直磁记录介质。
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公开(公告)号：US20130004796A1
公开(公告)日：2013-01-03
申请号：US13174387
申请日：2011-06-30
申请人： Yingguo Peng , Jan-Ulrich Thiele , Ganping Ju , Thomas Patrick Nolan , Yinfeng Ding , Alexander Qihong Wu
发明人： Yingguo Peng , Jan-Ulrich Thiele , Ganping Ju , Thomas Patrick Nolan , Yinfeng Ding , Alexander Qihong Wu
IPC分类号： G11B5/66
摘要： A magnetic stack includes multiple granular layers, at least one of the multiple granular layers is a magnetic layer that includes exchange coupled magnetic grains separated by a segregant having Ms greater than 100 emu/cc. Each of the multiple granular layers have anisotropic thermal conductivity.
摘要翻译： 磁性堆叠包括多个颗粒层，多个颗粒层中的至少一个是包含由具有大于100emu / cc的Ms的分离器分离的交换耦合的磁性颗粒的磁性层。 多个颗粒层中的每个具有各向异性热导率。
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7.发明授权公开(公告)号：US07279240B2
公开(公告)日：2007-10-09
申请号：US10764499
申请日：2004-01-27
申请人： Thomas Patrick Nolan
发明人： Thomas Patrick Nolan
IPC分类号： G11B5/66
CPC分类号： G11B5/66
摘要： A laminated perpendicular magnetic recording medium comprises a non-magnetic substrate and at least a pair of polycrystalline, vertically stacked, spaced-apart perpendicular magnetic layers supported thereon, wherein each of the magnetic layers has substantially the same preferred out-of-plane crystal growth orientation and the grains of at least two of the magnetic layers are vertically uncorrelated with each other.
摘要翻译： 层叠的垂直磁记录介质包括非磁性基板和支撑在其上的至少一对多晶，垂直堆叠的间隔开的垂直磁性层，其中每个磁性层具有基本相同的优选的平面外晶体生长 取向，并且至少两个磁性层的晶粒彼此垂直不相关。
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8.发明授权公开(公告)号：US08685547B2
公开(公告)日：2014-04-01
申请号：US12389039
申请日：2009-02-19
申请人： Bo Bian , Shoutao Wang , Weilu Xu , Abebe Hailu , Miaogen Lu , Charles C. Chen , Thomas Patrick Nolan , Alexander Yulievich Dobin
发明人： Bo Bian , Shoutao Wang , Weilu Xu , Abebe Hailu , Miaogen Lu , Charles C. Chen , Thomas Patrick Nolan , Alexander Yulievich Dobin
IPC分类号： G11B5/66
摘要： Aspects are directed to recording media with enhanced magnetic properties for improved writability. Examples can be included or related to methods, systems and components that allow for improved writability while reducing defects so as to obtain uniform magnetic properties such as uniformly high anisotropy and narrow switching field distribution. Some examples include a recording medium with an exchange tuning layer inserted between the hard layer and the soft, semi-soft or thin semi-hard layer so as to maximize the writability improvement of the media. Preferably, the exchange tuning layer is granular and reduces or optimizes the vertical coupling between the hard layer and the soft, semi-soft or semi-hard layer of a magnetic recording or storing device.
摘要翻译： 方面涉及具有增强的磁性能的记录介质以改善可写性。 可以包括或涉及允许改善可写性同时减少缺陷以获得均匀的磁性能如均匀高的各向异性和窄的开关场分布的方法，系统和组件的实例。 一些示例包括具有插入在硬层和软，半软或薄半硬层之间的交换调谐层的记录介质，以便最大限度地提高介质的可写性。 优选地，交换调谐层是粒状的并且减小或优化硬记录层与磁记录或存储装置的软，半软或半硬层之间的垂直耦合。
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9.发明授权Perpendicular media with Cr-doped Fe-alloy-containing soft underlayer (SUL) 有权具有掺杂Cr的含Fe合金的软底层（SUL）的垂直介质公开(公告)号：US07998606B2
公开(公告)日：2011-08-16
申请号：US12510114
申请日：2009-07-27
申请人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
发明人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
摘要翻译： 具有基板，含有约8-18％（原子）Cr的Cr掺杂的含Fe合金的底层和垂直记录磁性层的垂直磁记录介质以及用于提高记录介质的耐腐蚀性和制造记录的方法 介质。
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10.发明申请MAGNETIC ALLOY MATERIALS WITH HCP STABILIZED MICROSTRUCTURE, MAGNETIC RECORDING MEDIA COMPRISING SAME, AND FABRICATION METHOD THEREFOR 审中-公开具有HCP稳定微结构的磁性合金材料，包含其的磁记录介质及其制造方法公开(公告)号：US20110129692A1
公开(公告)日：2011-06-02
申请号：US12880353
申请日：2010-09-13
申请人： Thomas Patrick Nolan
发明人： Thomas Patrick Nolan
摘要： A magnetic recording medium comprises: (a) a non-magnetic substrate having a surface; and (b) a stack of thin film layers on the substrate surface, including a layer of a magnetic alloy material with a stabilized hexagonal close-packed (“hcp”) crystal structure, comprising: (i) a major amount of a ferromagnetic element with a first hcp crystal structure having a first c/a ratio, where “c” is a lattice parameter of the unique symmetry axis of the hcp structure along which a preferred direction of magnetization lies and “a” is a lattice parameter along a direction perpendicular to the c axis; (ii) a minor amount of a non-magnetic element with a face-centered cubic (fcc) crystal structure; and (iii) a minor amount of at least one hcp-stabilizing element.
摘要翻译： 磁记录介质包括：（a）具有表面的非磁性基底; 包括：（i）主要量的铁磁性元素（b）在衬底表面上的一层薄膜层，包括具有稳定的六方密堆积（“hcp”）晶体结构的磁性合金材料层， 具有第一ccp比率的第一hcp晶体结构，其中“c”是hcp结构的唯一对称轴的晶格参数，优选的磁化方向沿着该晶格参数，“a”是沿着方向的晶格参数 垂直于c轴; （ii）少量具有面心立方（fcc）晶体结构的非磁性元件; 和（iii）少量至少一种hcp稳定化元件。
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