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公开(公告)号：US20070230051A1
公开(公告)日：2007-10-04
申请号：US11474522
申请日：2006-06-26
申请人： Antony Ajan , Toshio Sugimoto , Ryosaku Inamura , Daiju Kaneko
发明人： Antony Ajan , Toshio Sugimoto , Ryosaku Inamura , Daiju Kaneko
摘要： A perpendicular magnetic recording medium is disclosed that is able to prevent the Wide Area Track Erasure phenomenon from occurring and is capable of high density recording. The perpendicular magnetic recording medium includes a substrate; a soft-magnetic backup stack structure including a first magnetic layer, a first non-magnetic coupling layer, and a second magnetic layer stacked on the substrate in order; an intermediate layer formed from a non-magnetic material on the soft-magnetic backup stacked structure; and a recording layer on the intermediate layer, the recording layer having an easy axis of magnetization perpendicular to the surface of the substrate. The first magnetic layer and the second magnetic layer are formed from a poly-crystal soft-magnetic material, each of the first magnetic layer and the second magnetic layer has an easy axis of magnetization in the surface thereof, and the magnetization of the first magnetic layer and the magnetization of the second magnetic layer are coupled and anti-parallel to each other.
摘要翻译： 公开了一种垂直磁记录介质，其能够防止发生广域轨迹擦除现象并能够进行高密度记录。 垂直磁记录介质包括基板; 包括顺序堆叠在所述基板上的第一磁性层，第一非磁性耦合层和第二磁性层的软磁备用堆叠结构; 在软磁备用堆叠结构上由非磁性材料形成的中间层; 以及在中间层上的记录层，记录层具有垂直于基板表面的易磁化磁化轴。 第一磁性层和第二磁性层由多晶软磁材料形成，第一磁性层和第二磁性层中的每一个在其表面上具有容易的磁化轴，并且第一磁性层 层，并且第二磁性层的磁化彼此耦合并且反平行。
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2.发明申请PERPENDICULAR MAGNETIC RECORDING MEDIUM, MANUFACTURING METHOD THEREOF AND MAGNETIC RECORDING DEVICE 审中-公开全能磁记录介质，其制造方法及磁记录装置公开(公告)号：US20080199734A1
公开(公告)日：2008-08-21
申请号：US12023338
申请日：2008-01-31
申请人： Antony Ajan , Toshio Sugimoto
发明人： Antony Ajan , Toshio Sugimoto
CPC分类号： G11B5/667
摘要： The thickness of the spacer layer is set in such as way as to obtain the anti-parallel magnetic coupling between two amorphous ferromagnetic layers in the perpendicular medium. When the thickness of the spacer layer is changed, the exchange field shows an oscillatory behavior and the highest values of the exchange fields are obtained at various thicknesses and indicates an anti-parallel exchange between them. A conventional recording medium applies the smallest thickness (1st APS) among the thicknesses corresponding to the exchange field maximum. On the other hand, the present invention applies the second smallest thickness (2nd APS) to obtain larger tolerance of spacer layer thickness and improved writability and enhanced recording performance.
摘要翻译： 间隔层的厚度设置成在垂直介质中获得两个非晶铁磁层之间的反平行磁耦合的方式。 当间隔层的厚度改变时，交换场显示振荡行为，并且在各种厚度下获得交换场的最高值并且指示它们之间的反平行交换。 常规记录介质在与交换场最大值对应的厚度中施加最小厚度（第一APS）。 另一方面，本发明应用第二最小厚度（第二APS）以获得更大的间隔层厚度公差和改进的可写性和增强的记录性能。
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公开(公告)号：US20070231609A1
公开(公告)日：2007-10-04
申请号：US11505943
申请日：2006-08-18
申请人： Antony Ajan , Toshio Sugimoto , Ryo Kurita
发明人： Antony Ajan , Toshio Sugimoto , Ryo Kurita
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/65 , G11B5/66 , G11B5/7325
摘要： A perpendicular magnetic recording medium is disclosed that includes a substrate, and a recording layer formed on the substrate, the recording layer having a magnetic easy axis substantially perpendicular to the surface of the substrate and including three or more magnetic layers containing a Co alloy having a hcp structure. The two of the magnetic layers included in the recording layer form an anti-ferromagnetic exchange coupling structure. The two magnetic layers are anti-ferromagnetically exchange coupled via a non-magnetic coupling layer situated therebetween. The magnetizations of the two magnetic layers are anti-parallel to each other at a remanent magnetization state.
摘要翻译： 公开了一种垂直磁记录介质，其包括基板和形成在基板上的记录层，记录层具有基本垂直于基板表面的易磁化轴，并且包括三个或更多个含有Co合金的磁性层， hcp结构。 包含在记录层中的两个磁性层形成反铁磁交换耦合结构。 两个磁性层经由位于其间的非磁性耦合层进行反铁磁交换耦合。 两个磁性层的磁化在剩余磁化状态下彼此反平行。
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公开(公告)号：US20070230052A1
公开(公告)日：2007-10-04
申请号：US11486297
申请日：2006-07-14
申请人： Antony Ajan , Toshio Sugimoto
发明人： Antony Ajan , Toshio Sugimoto
摘要： A perpendicular magnetic recording medium is disclosed that is able to prevent the Wide Area Track Erasure phenomenon from occurring and is capable of high density recording. The perpendicular magnetic recording medium includes a substrate; a soft-magnetic backup layer on the substrate; a separation layer on the soft-magnetic backup layer and formed from a non-magnetic material; a magnetic flux control layer on the separation layer; and a recording layer on the magnetic flux control layer having an easy axis of magnetization perpendicular to the surface of the substrate. The magnetic flux control layer is formed from a poly-crystal ferromagnetic material having an easy axis of magnetization perpendicular to the surface of the substrate.
摘要翻译： 公开了一种垂直磁记录介质，其能够防止发生广域轨迹擦除现象并能够进行高密度记录。 垂直磁记录介质包括基板; 基板上的软磁备用层; 软磁备用层上的分离层，由非磁性材料形成; 分离层上的磁通量控制层; 以及磁通量控制层上的记录层，其具有垂直于衬底表面的易磁化磁化轴。 磁通量控制层由具有垂直于衬底表面的易磁化轴的多晶铁磁材料形成。
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公开(公告)号：US08609263B1
公开(公告)日：2013-12-17
申请号：US13112959
申请日：2011-05-20
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/8404
摘要： Systems and methods for forming magnetic media with an underlayer are provided. One such method includes providing a non-magnetic substrate, forming a seed layer above the substrate, the seed layer including MgO, forming an underlayer on the seed layer, the underlayer including a material selected from the group consisting of Pd, Pt, W, Fe, V, Cu, and Ag, and forming a magnetic recording layer on the underlayer, the recording layer including FePt oxide.
摘要翻译： 提供了用于形成具有底层的磁性介质的系统和方法。 一种这样的方法包括提供非磁性基底，在基底上形成种子层，种子层包括MgO，在种子层上形成底层，底层包括选自Pd，Pt，W， Fe，V，Cu和Ag，并且在底层上形成磁记录层，记录层包括FePt氧化物。
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公开(公告)号：US07354665B2
公开(公告)日：2008-04-08
申请号：US11063937
申请日：2005-02-23
申请人： Antony Ajan , E. Noel Abarra
发明人： Antony Ajan , E. Noel Abarra
IPC分类号： G11B5/66
摘要： A magnetic recording medium is provided with a substrate, a recording magnetic layer made of a CoCr alloy and having a (11 20) crystallographic texture, and an underlayer, made of an AlV or AlRuV alloy, disposed between the substrate and the magnetic layer.
摘要翻译： 磁记录介质设置有基板，由CoCr合金制成并具有（11
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7.发明申请公开(公告)号：US20060177702A1
公开(公告)日：2006-08-10
申请号：US11346656
申请日：2006-02-03
申请人： Antony Ajan
发明人： Antony Ajan
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325 , G11B5/82 , G11B5/8404
摘要： A magnetic recording medium is provided with an orientation control layer and an underlayer disposed above the substrate, an underlayer disposed above the orientation control layer, and a recording layer having an hcp crystal structure and disposed on a surface of the underlayer. A part of the recording layer is epitaxially grown on the surface of the underlayer and has c-axes that are inclined with respect to a surface of the substrate.
摘要翻译： 磁记录介质设置有定向控制层和设置在基板上方的底层，设置在取向控制层上方的底层以及设置在底层表面上的具有hcp晶体结构的记录层。 记录层的一部分在底层的表面上外延生长，具有相对于基板的表面倾斜的c轴。
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8.发明申请Magnetic recording medium, method of producing the same, and magnetic storage apparatus 审中-公开磁记录介质，其制造方法和磁存储装置公开(公告)号：US20060177701A1
公开(公告)日：2006-08-10
申请号：US11211051
申请日：2005-08-24
申请人： Antony Ajan
发明人： Antony Ajan
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/66 , G11B5/8404
摘要： A magnetic recording medium is provided with an orientation control layer and an underlayer disposed above the substrate, an underlayer disposed above the orientation control layer, and a recording layer having an hcp crystal structure and disposed on a surface of the underlayer. The recording layer is epitaxially grown on the surface of the underlayer and has c-axes that are inclined with respect to a surface of the substrate.
摘要翻译： 磁记录介质设置有定向控制层和设置在基板上方的底层，设置在取向控制层上方的底层以及设置在底层表面上的具有hcp晶体结构的记录层。 记录层在底层的表面上外延生长，并且具有相对于基板的表面倾斜的c轴。
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公开(公告)号：US08941950B2
公开(公告)日：2015-01-27
申请号：US13479217
申请日：2012-05-23
CPC分类号： G11B5/7325 , G11B5/65
摘要： Various embodiments provide for a heat assisted magnetic recording (HAMR) media comprising: a magnetic recording layer; a barrier layer disposed under the magnetic recording layer; a first underlayer disposed under the barrier layer; and an amorphous seedlayer disposed under the first underlayer. For some embodiments, the recording medium may comprise: a magnetic recording layer including FePt alloy, a CoPt alloy, or a FePd alloy; a barrier layer including MgO, TiC, TiN, CrN, TiCN, β-WC, TaC, HfC, ZrC, VC, NbC, or NiO; a first underlayer including RuAl-oxide, NiAl, FeAl, AlMn, CuBe, or AlRe; or an amorphous seedlayer including a Cr—X alloy, where X comprises Al, B, C, Cu, Hf, Ho, Mn, Mo, Ni, Ta, Ti, V, W, or Ru.
摘要翻译： 各种实施例提供了一种热辅助磁记录（HAMR）介质，包括：磁记录层; 设置在所述磁记录层下方的阻挡层; 设置在所述阻挡层下方的第一底层; 以及设置在所述第一底层下方的无定形种子层。 对于一些实施例，记录介质可以包括：包括FePt合金，CoPt合金或FePd合金的磁记录层; 包含MgO，TiC，TiN，CrN，TiCN，...，WC，TaC，HfC，ZrC，VC，NbC或NiO的阻挡层; 包括RuAl-氧化物，NiAl，FeAl，AlMn，CuBe或AlRe的第一底层; 或包含Cr-X合金的无定形籽晶层，其中X包括Al，B，C，Cu，Hf，Ho，Mn，Mo，Ni，Ta，Ti，V，W或Ru。
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10.发明申请公开(公告)号：US20090257147A1
公开(公告)日：2009-10-15
申请号：US12488035
申请日：2009-06-19
申请人： Antony Ajan
发明人： Antony Ajan
CPC分类号： G11B5/667
摘要： A disclosed perpendicular magnetic recording medium includes a substrate; a soft magnetic underlayer disposed on the substrate and having no remanent magnetization; and a ferromagnetic recording layer disposed on the soft magnetic underlayer. The soft magnetic underlayer includes at least three soft magnetic layers laid one above the other with a non-magnetic intermediate layer interposed between every two adjacent soft magnetic layers. Among the (at least) three soft magnetic layers, at least one pair of soft magnetic layers form ferromagnetic coupling. Among the (at least) three soft magnetic layers, at least one pair of soft magnetic layers form antiferromagnetic coupling.
摘要翻译： 所公开的垂直磁记录介质包括基板; 设置在基板上并且不具有剩磁的软磁性底层; 以及设置在软磁性底层上的铁磁记录层。 所述软磁性底层包括至少三层软磁层，所述至少三层软磁层以介于每两相邻的软磁性层之间的非磁性中间层彼此重叠。 在（至少）三个软磁层中，至少一对软磁层形成铁磁耦合。 在（至少）三个软磁层中，至少一对软磁层形成反铁磁耦合。
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