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1. 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。

2. 发明申请

US20050013033A1 Magnetic recording disk drive with laminated media and improved media signal-to-noise ratio 失效
标题翻译：具有层压介质的磁记录磁盘驱动器和改进的介质信噪比
公开(公告)号：US20050013033A1
公开(公告)日：2005-01-20
申请号：US10620542
申请日：2003-07-15
申请人： David Margulies , Andreas Moser , Hal Rosen , Jan-Ulrich Thiele
发明人： David Margulies , Andreas Moser , Hal Rosen , Jan-Ulrich Thiele
IPC分类号： G11B5/65 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/31 , G11B5/64 , G11B5/66 , G11B5/72 , G11B5/738 , G11B5/82 , G11B11/10
CPC分类号： G11B5/012 , G11B5/656 , G11B5/66 , G11B5/82 , G11B2005/0002 , G11B2005/0005 , G11B2005/001 , G11B2005/0016 , 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。

3. 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。

4. 发明申请

US20050259351A1 Magnetic recording system with three-layer laminated media having improved signal-to-noise ratio 失效
标题翻译：具有提高的信噪比的具有三层层压介质的磁记录系统
公开(公告)号：US20050259351A1
公开(公告)日：2005-11-24
申请号：US10853631
申请日：2004-05-24
申请人： Hoa Do , David Margulies , Hal Rosen , Natacha Supper
发明人： Hoa Do , David Margulies , Hal Rosen , Natacha Supper
IPC分类号： G11B5/66 , G11B17/00
CPC分类号： G11B5/66
摘要： A magnetic recording system uses a magnetic recording medium having a laminated magnetic structure with at least three magnetic layers, wherein the magnetic layers have decreasing intrinsic coercivity H0 with distance from the write head. The write field at the center of each magnetic layer is greater than that layer's H0. The magnetic layers have different compositions and/or thicknesses and thereby different values of H0. The alloys used in the middle and upper magnetic layers are relatively “high-moment” alloys that would not ordinarily be used in magnetic recording media because they have relatively low S0NR, but the overall S0NR of the laminated magnetic structure is improved because of the effect of lamination. The middle and upper magnetic layers can be made substantially thinner, which enables the magnetic layers to be located closer to the write head, thereby exposing each of the magnetic layers to a higher write field.
摘要翻译：磁记录系统使用具有至少三个磁性层的层叠磁性结构的磁记录介质，其中磁层具有与写入头距离更小的固有矫顽力H 0 0。每个磁性层的中心处的写入场大于该层的H 0 0。磁性层具有不同的组成和/或厚度，从而具有不同的H 0 O值。在中上层磁性层中使用的合金是相对“高力矩”的合金，它们通常不会用于磁记录介质，因为它们具有相对较低的S O N，但总体上S _{0得到改善。可以使中上层磁性层和上磁性层实质上更薄，这使得磁层能够更靠近写入头位置，从而将每个磁性层暴露于较高的写入场。}

5. 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。

6. 发明申请

US20050259362A1 Laminated magnetic recording medium having improved signal-to-noise ratio 失效
标题翻译：具有提高的信噪比的层压磁记录介质
公开(公告)号：US20050259362A1
公开(公告)日：2005-11-24
申请号：US10853431
申请日：2004-05-24
申请人： Hoa Do , David Margulies , Hal Rosen , Natacha Supper
发明人： Hoa Do , David Margulies , Hal Rosen , Natacha Supper
IPC分类号： G11B5/64 , G11B5/66 , G11B5/82
CPC分类号： G11B5/66 , G11B5/656 , G11B5/82
摘要： A magnetic recording medium has a laminated magnetic structure with at least three magnetic layers, wherein the magnetic layers have decreasing intrinsic coercivity H0 with distance from the write head. The write field at the center of each magnetic layer is greater than that layer's H0. The magnetic layers have different compositions and/or thicknesses and thereby different values of H0. The alloys used in the middle and upper magnetic layers are relatively “high-moment” alloys that would not ordinarily be used in magnetic recording media because they have relatively low S0NR, but the overall S0NR of the laminated magnetic structure is improved because of the effect of lamination. The middle and upper magnetic layers can be made substantially thinner, which enables the magnetic layers to be located closer to the write head, thereby exposing each of the magnetic layers to a higher write field.
摘要翻译：磁记录介质具有至少三个磁性层的层叠磁性结构，其中磁性层具有与写头距离更小的固有矫顽力H 0 0。每个磁性层的中心处的写入场大于该层的H 0 0。磁性层具有不同的组成和/或厚度，从而具有不同的H 0 O值。在中上层磁性层中使用的合金是相对“高力矩”的合金，它们通常不会用于磁记录介质，因为它们具有相对较低的S O N，但总体上S _{0得到改善。可以使中上层磁性层和上磁性层实质上更薄，这使得磁层能够更靠近写入头位置，从而将每个磁性层暴露于较高的写入场。}

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