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1. 发明授权

US07776388B2 Fabricating magnetic recording media on patterned seed layers 有权
标题翻译：在图案种子层上制造磁记录介质
公开(公告)号：US07776388B2
公开(公告)日：2010-08-17
申请号：US11850165
申请日：2007-09-05
申请人： Elizabeth Dobisz , David Margulies , Olav Hellwig , Xiao Z. Wu
发明人： Elizabeth Dobisz , David Margulies , Olav Hellwig , Xiao Z. Wu
IPC分类号： B05D5/12 , C23F1/02
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/855
摘要： Patterned media and associated methods of fabrication are provided in which vertical magnetic grains are grown on a patterned seed layer. The patterned seed layer includes a matrix of islands of a first seed material. Each island of first seed material is separated from other islands by a region of second seed material. The first seed material is selected to initiate growth of magnetic material, and the second seed material is selected to initiate growth of non-magnetic material. Subsequently, magnetic material is grown on the first seed material and non-magnetic material is grown on the second seed material. Deposition may be simultaneously. The magnetic and non-magnetic materials form well-defined vertical columns over the first and second seed materials respectively. Thus, each island behaves as an isolated magnetic unit, which switches independently from its neighbor units, which are magnetically separated by the non-magnetic material.
摘要翻译：提供了图案化的介质和相关联的制造方法，其中在图案种子层上生长垂直磁性颗粒。图案化种子层包括第一种子材料的岛的基质。第一种子材料的每个岛通过第二种子材料的区域与其他岛屿分离。选择第一种子材料以引发磁性材料的生长，并且选择第二种子材料以引发非磁性材料的生长。随后，在第一种子材料上生长磁性材料，并且在第二种子材料上生长非磁性材料。沉积可能同时进行。磁性和非磁性材料分别在第一种子材料和第二种子材料上形成明确的垂直柱。因此，每个岛作为孤立的磁性单元，其独立地从其相邻单元切换，其被非磁性材料磁分离。

2. 发明申请

US20070243418A1 Perpendicular magnetic recording medium with laminated recording layers formed of exchange-coupled ferromagnetic layers 有权
标题翻译：具有由交换耦合铁磁层形成的层压记录层的垂直磁记录介质
公开(公告)号：US20070243418A1
公开(公告)日：2007-10-18
申请号：US11403468
申请日：2006-04-12
申请人： Eric Fullerton , David Margulies , Hal Rosen , Natacha Supper
发明人： Eric Fullerton , David Margulies , Hal Rosen , Natacha Supper
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/65
摘要： A laminated perpendicular magnetic recording medium has two recording layers (RL1 and RL2) that are separated and magnetically decoupled by a nonmagnetic spacer layer (SL). The SL has a thickness and composition to assure there is no antiferromagnetic or ferromagnetic coupling between RL1 and RL2. Thus in the presence of the write field, RL1 and RL2 respond independently and become oriented with the direction of the write field. Each RL is an “exchange-spring” type magnetic recording layer formed of two ferromagnetic layers (MAG1 and MAG2) that have substantially perpendicular magnetic anisotropy and are ferromagnetically exchange-coupled by a nonmagnetic or weakly ferromagnetic coupling layer (CL). The medium takes advantage of lamination to attain higher signal-to-noise ratio (SNR) yet has improved writability as a result of each RL being an exchange-spring type RL.
摘要翻译：层叠的垂直磁记录介质具有由非磁性间隔层（SL）分离并磁解除的两个记录层（RL 1和RL 2）。 SL具有厚度和组成，以确保在RL 1和RL 2之间不存在反铁磁或铁磁耦合。因此，在存在写入场的情况下，RL 1和RL 2独立地响应并且随着写入场的方向而取向。每个RL是由两个铁磁层（MAG1和MAG2）形成的“交换弹簧”型磁记录层，它们具有基本上垂直的磁各向异性，并且通过非磁性或弱铁磁耦合层（CL）进行铁磁交换耦合。介质利用层叠来获得更高的信噪比（SNR），而由于每个RL是交换弹簧型RL，所以具有改进的可写性。

3. 发明授权

US07125616B2 Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers 有权
标题翻译：具有多层下层的反铁磁耦合磁性层的磁记录盘
公开(公告)号：US07125616B2
公开(公告)日：2006-10-24
申请号：US10788687
申请日：2004-02-26
申请人： Hoa Van Do , Eric Edward Fullerton , David Margulies , Andreas Moser
发明人： Hoa Van Do , Eric Edward Fullerton , David Margulies , Andreas Moser
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/656
摘要： A magnetic recording disk has an antiferromagnetically-coupled (AFC) structure that has three lower ferromagnetic layers (LL1, LL2, LL3) and an upper ferromagnetic layer (UL), all four ferromagnetic layers being antiferromagnetically-coupled together across corresponding antiferromagnetically-coupling layers. The UL has a magnetization-remanence-thickness product (Mrt) greater than the Mrt each of the three lower layers LL1, LL2, LL3, and greater than the sum of the Mrt values of LL1 and LL3. The middle lower layer LL2 has an Mrt less than the Mrt of each of the other lower layers LL1 and LL3, and as a result the composite Mrt of the AFC structure is less than the composite Mrt of a conventional AFC structure having only a single lower layer. The AFC structure achieves this composite Mrt reduction without increasing the Mrt of any of the three lower layers above the maximum Mrt of the single lower layer in the conventional AFC structure.
摘要翻译：磁记录盘具有反铁磁耦合（AFC）结构，其具有三个低铁磁层（LL 1，LL 2，LL 3）和上铁磁层（UL），所有四个铁磁层在相应的反铁磁层上反铁磁耦合在一起 - 耦合层。 UL具有大于三个下层LL 1，LL 2，LL 3中的每一个的Mrt的磁化剩磁厚度乘积（Mrt），并且大于LL 1和LL 3的Mrt值之和。中下层LL 2的Mrt小于其他下层LL 1和LL 3中的每一个的Mrt，结果，AFC结构的复合Mrt小于仅具有传统AFC结构的复合材料Mrt 单个下层。 AFC结构在不增加传统AFC结构中单个下层的最大Mrt以上的三个下层中的任何一个的Mrt的情况下实现了该复合Mrt的还原。

4. 发明申请

US20050013034A1 Method for magnetic recording on laminated media with improved media signal-to-noise ratio 失效
标题翻译：在具有改进的介质信噪比的层压介质上进行磁记录的方法
公开(公告)号：US20050013034A1
公开(公告)日：2005-01-20
申请号：US10620664
申请日：2003-07-15
申请人： David Margulies , Andreas Moser , Hal Rosen , Jan-Ulrich ThieIe
发明人： David Margulies , Andreas Moser , Hal Rosen , Jan-Ulrich ThieIe
IPC分类号： G11B5/00 , G11B5/012 , G11B5/02 , G11B5/127 , G11B5/39 , G11B5/66 , G11B5/82
CPC分类号： G11B5/012 , G11B5/127 , G11B5/3903 , G11B5/3967 , G11B5/66 , G11B5/82 , G11B2005/001 , G11B2005/0021
摘要： A magnetic recording disk drive has an inductive write head and a heater to record data in laminated media on the recording disk. The laminated media, with at least two ferromagnetic layers separated by a nonmagnetic spacer layer, improves SNR. Each of the ferromagnetic layers can be formed of a material having an intrinsic coercivity capable of being written by a conventional inductive write head, but because of the desired lamination to increase SNR, the ferromagnetic layer farthest from the write head is exposed to a magnetic field less than its intrinsic coercivity and thus can not be written. To write to the laminated media, heat is directed to the lower ferromagnetic layer to reduce its intrinsic coercivity below the magnetic field to which it is exposed.
摘要翻译：磁记录磁盘驱动器具有感应写头和加热器，用于在记录盘上的叠层介质中记录数据。具有由非磁性间隔层隔开的至少两个铁磁层的层压介质提高了SNR。每个铁磁层可以由具有能够由常规感应写头写入的固有矫顽力的材料形成，但是由于期望的叠层以增加SNR，所以从写头最远的铁磁层暴露于磁场小于其内在矫顽力，因此不能写出。为了写入层压介质，将热量导向下铁磁层，以将它的固有矫顽力降低到暴露于其下的磁场。

5. 发明申请

US20100273028A1 FABRICATING MAGNETIC RECORDING MEDIA ON PATTERNED SEED LAYERS 有权
标题翻译：在图形层上制作磁记录媒体
公开(公告)号：US20100273028A1
公开(公告)日：2010-10-28
申请号：US12827080
申请日：2010-06-30
申请人： Elizabeth Dobisz , David Margulies , Olav Hellwig , Xiao Z. Wu
发明人： Elizabeth Dobisz , David Margulies , Olav Hellwig , Xiao Z. Wu
IPC分类号： G11B5/84 , G11B5/855 , G11B5/62
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/746 , G11B5/855
摘要： Patterned media and associated methods of fabrication are provided in which vertical magnetic grains are grown on a patterned seed layer. The patterned seed layer includes a matrix of islands of a first seed material. Each island of first seed material is separated from other islands by a region of second seed material. The first seed material is selected to initiate growth of magnetic material, and the second seed material is selected to initiate growth of non-magnetic material. Subsequently, magnetic material is grown on the first seed material and non-magnetic material is grown on the second seed material. Deposition may be simultaneously. The magnetic and non-magnetic materials form well-defined vertical columns over the first and second seed materials respectively. Thus, each island behaves as an isolated magnetic unit, which switches independently from its neighbor units, which are magnetically separated by the non-magnetic material.
摘要翻译：提供了图案化的介质和相关联的制造方法，其中在图案种子层上生长垂直磁性颗粒。图案化种子层包括第一种子材料的岛的基质。第一种子材料的每个岛通过第二种子材料的区域与其他岛屿分离。选择第一种子材料以引发磁性材料的生长，并且选择第二种子材料以引发非磁性材料的生长。随后，在第一种子材料上生长磁性材料，并且在第二种子材料上生长非磁性材料。沉积可能同时进行。磁性和非磁性材料分别在第一种子材料和第二种子材料上形成明确的垂直柱。因此，每个岛作为孤立的磁性单元，其独立地从其相邻单元切换，其被非磁性材料磁分离。

6. 发明申请

US20070292721A1 Perpendicular magnetic recording medium 审中-公开
标题翻译：垂直磁记录介质
公开(公告)号：US20070292721A1
公开(公告)日：2007-12-20
申请号：US11789891
申请日：2007-04-25
申请人： Andreas Berger , Xiaoping Bian , Qing Dai , Hoa Do , Eric Fullerton , Bernd Heinz , Yoshihiro Ikeda , David Margulies , Mary Minardi , Mohammad Mirzamaani , Hal Rosen , Natacha Supper , Kentaro Takano , Min Xiao
发明人： Andreas Berger , Xiaoping Bian , Qing Dai , Hoa Do , Eric Fullerton , Bernd Heinz , Yoshihiro Ikeda , David Margulies , Mary Minardi , Mohammad Mirzamaani , Hal Rosen , Natacha Supper , Kentaro Takano , Min Xiao
IPC分类号： G11B5/66 , G11B5/706
CPC分类号： G11B5/66 , G11B5/65 , G11B5/7325 , G11B5/851
摘要： A perpendicular magnetic recording medium including improvements to the recording layer (RL), exchange break layer (EBL), soft underlayer (SUL), overcoat (OC), adhesion layer (AL) and the combination of the layers. Advances in the RL include a cap layer. Improvements in the EBL include a multiple layer EBL.
摘要翻译：包括对记录层（RL），交换破坏层（EBL），软底层（SUL），外涂层（OC），粘合层（AL）以及这些层的组合的改进的垂直磁记录介质。 RL的进步包括盖层。 EBL的改进包括多层EBL。

7. 发明申请

US20060210835A1 Disk drive with laminated magnetic thin films with sublayers for magnetic recording 有权
标题翻译：具有层叠磁性薄膜的磁盘驱动器，具有用于磁记录的子层
公开(公告)号：US20060210835A1
公开(公告)日：2006-09-21
申请号：US11084402
申请日：2005-03-18
申请人： Hoa Do , Eric Fullerton , David Margulies , Natacha Supper
发明人： Hoa Do , Eric Fullerton , David Margulies , Natacha Supper
IPC分类号： G11B5/66
CPC分类号： G11B5/656 , G11B5/66
摘要： The invention includes a disk drive with a magnetic recording disk with an upper and lower sublayer in at least one magnetic layer of a laminated magnetic layer structure that includes a spacer layer that substantially decouples the magnetic layers. The lower sublayer has a lower boron content than the upper sublayer and a preferred embodiment is CoPtCrBTa. The upper sublayer is deposited onto the lower sublayer and is preferably CoPtCrB with a higher boron content than the lower sublayer. The composition of the lower sublayer gives it a very low moment with low intrinsic coercivity which would not be useful as a recording layer on its own. The upper sublayer is a higher moment alloy with high intrinsic coercivity. An embodiment of the invention includes a laminated magnetic layer structure which is antiferromagnetically coupled to a lower ferromagnetic layer.
摘要翻译：本发明包括具有磁记录盘的磁盘驱动器，该磁盘驱动器具有在层叠磁性层结构的至少一个磁性层中具有上和下子层的磁记录盘，该磁层包括使磁性层基本上分离的间隔层。下层具有比上层更低的硼含量，优选实施方案是CoPtCrBTa。上部子层沉积在下部子层上，优选的是具有比下部子层更高的硼含量的CoPtCrB。下层的组成使得其具有低固有矫顽力的非常低的力矩，其本身不会用作记录层。上层是具有高固有矫顽力的较高的力矩合金。本发明的实施例包括层叠的磁性层结构，其被反铁磁耦合到下铁磁层。

8. 发明申请

US20060210834A1 Laminated magnetic thin films with sublayers for magnetic recording 审中-公开
标题翻译：具有用于磁记录的子层的层压磁性薄膜
公开(公告)号：US20060210834A1
公开(公告)日：2006-09-21
申请号：US11084401
申请日：2005-03-18
申请人： Hoa Do , Eric Fullerton , David Margulies , Natacha Supper
发明人： Hoa Do , Eric Fullerton , David Margulies , Natacha Supper
IPC分类号： G11B5/66
CPC分类号： G11B5/656 , G11B5/66
摘要： The invention uses an upper and lower sublayer in at least one magnetic layer of a laminated magnetic layer structure that includes a spacer layer that substantially decouples the magnetic layers in a magnetic recording medium. The lower sublayer has a lower boron content than the upper sublayer and a preferred embodiment is CoPtCrBTa. The upper sublayer is deposited onto the lower sublayer and is preferably CoPtCrB with a higher boron content than the lower sublayer. The composition of the lower sublayer gives it a very low moment with low intrinsic coercivity which would not be useful as a recording layer on its own. The upper sublayer is a higher moment alloy with high intrinsic coercivity. An embodiment of the invention includes a laminated magnetic layer structure which is antiferromagnetically coupled to a lower ferromagnetic layer.
摘要翻译：本发明使用层叠磁性层结构的至少一个磁性层中的上部和下部子层，其包括使磁性记录介质中的磁性层基本上分离的间隔层。下层具有比上层更低的硼含量，优选实施方案是CoPtCrBTa。上部子层沉积在下部子层上，优选的是具有比下部子层更高的硼含量的CoPtCrB。下层的组成使得其具有低固有矫顽力的非常低的力矩，其本身不会用作记录层。上层是具有高固有矫顽力的较高的力矩合金。本发明的实施例包括层叠的磁性层结构，其被反铁磁耦合到下铁磁层。

9. 发明申请

US20050190498A1 Magnetic recording disk with antiferromagnetically-coupled magnetic layer having multiple lower layers 有权
标题翻译：具有多层下层的反铁磁耦合磁性层的磁记录盘
公开(公告)号：US20050190498A1
公开(公告)日：2005-09-01
申请号：US10788687
申请日：2004-02-26
申请人： Hoa Do , Eric Fullerton , David Margulies , Andreas Moser
发明人： Hoa Do , Eric Fullerton , David Margulies , Andreas Moser
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/738 , G11B5/82 , H01F10/16
CPC分类号： G11B5/66 , G11B5/656
摘要： A magnetic recording disk has an antiferromagnetically-coupled (AFC) structure that has three lower ferromagnetic layers (LL1, LL2, LL3) and an upper ferromagnetic layer (UL), all four ferromagnetic layers being antiferromagnetically-coupled together across corresponding antiferromagnetically-coupling layers. The UL has a magnetization-remanence-thickness product (Mrt) greater than the Mrt each of the three lower layers LL1, LL2, LL3, and greater than the sum of the Mrt values of LL1 and LL3. The middle lower layer LL2 has an Mrt less than the Mrt of each of the other lower layers LL1 and LL3, and as a result the composite Mrt of the AFC structure is less than the composite Mrt of a conventional AFC structure having only a single lower layer. The AFC structure achieves this composite Mrt reduction without increasing the Mrt of any of the three lower layers above the maximum Mrt of the single lower layer in the conventional AFC structure.
摘要翻译：磁记录盘具有反铁磁耦合（AFC）结构，其具有三个低铁磁层（LL1，LL2，LL3）和上铁磁层（UL），所有四个铁磁层在相应的反铁磁耦合层上反铁磁耦合在一起。 UL具有大于三个下层LL1，LL2，LL3中的每一个的Mrt的磁化剩磁厚度乘积（Mrt），并且大于LL1和LL3的Mrt值的和。中下层LL2的Mrt小于其他下层LL1和LL3中的每一层的Mrt，结果，AFC结构的复合材料Mrt小于仅具有单一下层LL1和LL3的常规AFC结构的复合材料Mrt 层。 AFC结构在不增加传统AFC结构中单个下层的最大Mrt以上的三个下层中的任何一个的Mrt的情况下实现了该复合Mrt的还原。

10. 发明授权

US07572527B2 Perpendicular magnetic recording medium with improved antiferromagnetically-coupled recording layer 有权
标题翻译：具有改进的反铁磁耦合记录层的垂直磁记录介质
公开(公告)号：US07572527B2
公开(公告)日：2009-08-11
申请号：US11135703
申请日：2005-05-24
申请人： Eric E. Fullerton , Byron Hassberg Lengsfield, III , David Margulies
发明人： Eric E. Fullerton , Byron Hassberg Lengsfield, III , David Margulies
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/656 , G11B5/667 , G11B5/7325
摘要： A perpendicular magnetic recording disk has an antiferromagnetically-coupled (AFC) recording layer (RL) comprised of lower and upper ferromagnetic layers, each having a hexagonal-close-packed (hcp) crystalline structure and perpendicular magnetic anisotropy, separated by an antiferromagnetically (AF) coupling layer, wherein the lower ferromagnetic layer (LFM) has substantially higher magnetic permeability than the upper ferromagnetic layer (UFM). The AFC RL is located on an actual exchange break layer (EBL) that separates the AFC RL from the disk's soft magnetic underlayer (SUL). The LFM functions as part of an “effective” exchange break layer (EBL) that also includes the actual EBL and the AF-coupling layer, thereby allowing the actual EBL to be made as thin as possible. The hcp LFM promotes the growth of the hcp UFM in the same way the actual EBL does so that its thickness contributes to the thickness necessary to grow the hcp UFM. The effective EBL appears to be magnetically “thin” during the write process and magnetically “thick” during the readback process.
摘要翻译：垂直磁记录盘具有由下铁磁层和上铁磁层组成的反铁磁耦合（AFC）记录层（RL），每个具有六方密堆积（hcp）晶体结构和垂直磁各向异性，由反铁磁（AF ）耦合层，其中下铁磁层（LFM）具有比上铁磁层（UFM）显着更高的磁导率。 AFC RL位于将AFC RL与磁盘的软磁底层（SUL）分离的实际交换中断层（EBL）上。 LFM作为“有效”交换中断层（EBL）的一部分，该层还包括实际的EBL和AF耦合层，从而使实际的EBL尽可能薄。 hcp LFM以与实际EBL相同的方式促进hcp UFM的增长，使其厚度有助于生长hcp UFM所需的厚度。在写入过程中，有效的EBL看似磁性很薄，在回读过程中磁性“厚”。

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