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公开(公告)号：US5919580A
公开(公告)日：1999-07-06
申请号：US861754
申请日：1997-05-22
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , H01L43/08 , H01L43/10 , G11B2005/3996 , Y10S428/928 , Y10T428/1107 , Y10T428/12854
摘要： A spin valve device containing a chromium or chromium and aluminum antiferromagnetic layer, which acts as a pinning layer for a magnetoresistive ferromagnetic layer, by exchange coupling. The antiferromagnetic layer has a tunable Neel temperature and anisotropy constant, and is corrosion resistant.
摘要翻译： 一种自旋阀装置，其通过交换耦合包含用作磁阻铁磁性层的钉扎层的铬或铬和铝反铁磁性层。 反铁磁层具有可调N + E，acu e + EE el温度和各向异性常数，具有耐腐蚀性。
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公开(公告)号：US08119265B2
公开(公告)日：2012-02-21
申请号：US11265031
申请日：2005-11-02
申请人： Yiao-Tee Hsia , Wei Peng , Timothy J. Klemmer
发明人： Yiao-Tee Hsia , Wei Peng , Timothy J. Klemmer
IPC分类号： G11B5/66
CPC分类号： G11B5/72 , G11B5/7325 , Y10T29/4902
摘要： A thin film structure, such as a magnetic recording media, having a magnetic layer and a stress-effecting layer is disclosed. The stress-effecting layer induces a magneto-elastic anisotropy in the magnetic layer. The stress-effecting layer can be activated by the application of an external stress and/or strain. The induced magneto-elastic anisotropy can transiently achieve and/or enhance a tilt angle of the medium. The medium can be a perpendicular magnetic recording medium, a longitudinal magnetic recording medium and/or a tilted magnetic recording medium. The magnetic recording media is suitable for use with a data storage system, such as a HAMR data storage system.
摘要翻译： 公开了具有磁性层和应力效应层的薄膜结构，例如磁记录介质。 应力影响层在磁性层中引起磁弹性各向异性。 应力影响层可以通过施加外部应力和/或应变来激活。 感应磁弹性各向异性可以瞬时实现和/或增强介质的倾斜角。 介质可以是垂直磁记录介质，纵向磁记录介质和/或倾斜磁记录介质。 磁记录介质适用于数据存储系统，例如HAMR数据存储系统。
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公开(公告)号：US07986493B2
公开(公告)日：2011-07-26
申请号：US11946535
申请日：2007-11-28
申请人： Dieter Weller , Timothy J. Klemmer , Kim Y. Lee
发明人： Dieter Weller , Timothy J. Klemmer , Kim Y. Lee
IPC分类号： G11B5/82
摘要： A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves. The sidewalls provide a plurality of pinning sites formed between the sidewalls for pinning magnetic domain walls in the track. At least one of the pinning sites includes a first indentation in the first sidewall and a paired second indentation in the second sidewall. In one embodiment data can be stored within the magnetic recording layer by positioning a write head adjacent the track and inducing at least two magnetic domains defining a domain wall. The domain wall migrates to one of the pinning sites in the track.
摘要翻译： 具有域壁钉扎位置的磁记录介质，包括衬底，软磁性底层和覆盖软磁性底层的磁记录层。 在一个实施例中，磁记录层具有至少两个沟槽，提供具有由凹槽形成的第一和第二侧壁的轨道。 侧壁提供在侧壁之间形成的多个钉扎位置，用于钉住轨道中的磁畴壁。 钉扎位置中的至少一个包括第一侧壁中的第一凹陷和第二侧壁中的成对的第二凹陷。 在一个实施例中，数据可以通过将写头定位在轨道附近并且诱导限定域壁的至少两个磁畴来存储在磁记录层内。 域墙迁移到轨道中的一个钉扎位置。
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公开(公告)号：US06838195B2
公开(公告)日：2005-01-04
申请号：US10366271
申请日：2003-02-13
申请人： Dieter K. Weller , Chao Liu , Timothy J. Klemmer
发明人： Dieter K. Weller , Chao Liu , Timothy J. Klemmer
CPC分类号： B82Y25/00 , B82Y40/00 , G11B5/65 , G11B5/712 , G11B5/842 , H01F1/0054 , H01F1/009 , H01F10/123 , H01F10/32 , H01F41/30 , Y10T428/265
摘要： A self-organized magnetic array includes a plurality of magnetic primary nanoparticles are arranged on the substrate in a self-organized magnetic array. A plurality of magnetic interstitial nanoparticles are positioned between at least some of the primary nanoparticles in the self-organized magnetic array. A method of making such an array is also provided.
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5.发明授权Magnetic recording head with high saturation magnetization write pole having alternating interface-defining Fe/Co layers 失效具有高饱和磁化写磁极的磁记录头具有界面界定的交替界面的Fe / Co层公开(公告)号：US06795273B2
公开(公告)日：2004-09-21
申请号：US10337113
申请日：2003-01-06
IPC分类号： G11B5147
CPC分类号： B82Y25/00 , B82Y40/00 , G11B5/1278 , G11B5/187 , G11B5/66 , G11B2005/0029 , H01F10/32 , H01F41/302
摘要： A magnetic recording head includes a write pole having alternating layers of Fe and Co and a return pole magnetically coupled to the write pole. The layers of Fe may have a thickness from about 1.0 angstroms to about 40.0 angstroms and the layers of Co may have a thickness from about 1.0 angstroms to about 20.0 angstroms. The write pole may have a saturation magnetization greater than about 2.45 Tesla. A method for forming a write pole for a magnetic recording head is also disclosed.
摘要翻译： 磁记录头包括具有交替的Fe和Co层的写入极和磁极耦合到写入极的返回极。 Fe层可以具有约1.0埃至约40.0埃的厚度，并且Co的层可以具有约1.0埃至约20.0埃的厚度。 写极可以具有大于约2.45特斯拉的饱和磁化强度。 还公开了一种用于形成磁记录头的写极的方法。
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6.发明授权公开(公告)号：US06320479B1
公开(公告)日：2001-11-20
申请号：US09464805
申请日：1999-12-17
IPC分类号： H03H9135
CPC分类号： H03H9/135
摘要： In accordance with the invention, magnetostrictive saw devices are provided with improved transducer structures for enhanced performance. In one improved device, the transducers are in the form of gratings with interconnected ends for reduced resistance and inductance. In another embodiment, the transducers are shaped to provide apodization. In yet a third embodiment, transducer performance is enhanced by patterning composite structures.
摘要翻译： 根据本发明，磁致伸缩锯装置具有改进的换能器结构，以提高性能。 在一个改进的器件中，传感器是具有互连端的光栅形式，用于降低电阻和电感。 在另一个实施例中，换能器成形为提供变迹。 在第三实施例中，通过图案化复合结构来提高换能器性能。
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公开(公告)号：US06573818B1
公开(公告)日：2003-06-03
申请号：US09540618
申请日：2000-03-31
IPC分类号： H01F2702
CPC分类号： H01F17/0006 , H01F27/245 , H01F27/2804 , H01F2027/2819
摘要： The present invention is a planar spiral inductor a top magnetic layer a bottom magnetic layer; and a plurality of conductive coils disposed between said top magnetic layer and said bottom magnetic layer. A significant difference from prior art is that the top and bottom magnetic layers have their centers effectively cut out using lithographic techniques or other techniques to frame the core of the conductive spirals. An advantage of this structure over the prior art is that when magnetic anisotropies other than shape are kept small, then the magnetic configuration will produce a magnetostatic shape anisotropy such that the easy axis (low energy direction of magnetization) lies parallel to the legs of a rectangular frame or the circumference of a circular frame, as will be described. During operation of the inductor, the field produced by the coils flows in a radial direction and will be perpendicular to the easy axis direction thereby causing magnetization reversal to occur by rotation while advantageously utilizing the full structure in this mode.
摘要翻译： 本发明是一种平面螺旋电感器，一个顶部磁性层，一个底部磁性层; 以及设置在所述顶部磁性层和所述底部磁性层之间的多个导电线圈。 与现有技术的显着差异在于，使用光刻技术或其他技术来使顶部和底部磁性层有效地切出它们的中心以构成导电螺旋的芯。 与现有技术相比，该结构的优点是当除形状之外的磁各向异性保持较小时，则磁性构型将产生静磁形状各向异性，使得容易轴（磁化强度的低能量方向）平行于 矩形框架或圆形框架的圆周，如将要描述的。 在电感器工作期间，由线圈产生的磁场在径向方向上流动并且将垂直于易轴方向，从而通过旋转而产生磁化反转，同时有利地利用该模式中的全部结构。
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8.发明授权
公开(公告)号：US5998048A
公开(公告)日：1999-12-07
申请号：US33204
申请日：1998-03-02
申请人： Sungho Jin , Timothy J. Klemmer , Thomas Henry Tiefel, deceased , Robert Bruce Van Dover , Wei Zhu
发明人： Sungho Jin , Timothy J. Klemmer , Thomas Henry Tiefel, deceased , Robert Bruce Van Dover , Wei Zhu
CPC分类号： H01F10/132 , G11B5/3109 , G11B5/39 , G11B5/3903 , H01F10/138 , H01F10/265 , Y10S428/90
摘要： The invention is embodied in an anisotropic, soft magnetic thin film article comprising a cobalt-iron-chromium-nitrogen (Co--Fe--Cr--N) alloy. The thin film is formed such that the alloy has a relatively high saturation magnetization (4.pi.M.sub.s), e.g., greater than approximately 8 kilogauss (kG), a relatively low coercivity (H.sub.c), e.g., less than approximately 2.0 oersteds (Oe), a relatively high squareness ratio (M.sub.r /M.sub.s), e.g., greater than approximately 0.90, and a relatively high anisotropy field (H.sub.k), e.g., greater than approximately 20 Oe, in an as-deposited condition or, alternatively, with a relatively low temperature treatment, e.g., below approximately 300.degree. Celsius. The inventive films are suitable for use in electromagnetic devices, e.g., in microtransformer cores, inductor cores and in magnetic read-write heads.
摘要翻译： 本发明体现在包含钴 - 铁 - 铬 - 氮（Co-Fe-Cr-N）合金的各向异性软磁薄膜制品中。 形成薄膜使得合金具有相对高的饱和磁化强度（4πMs），例如大于约8千兆（kG），较低的矫顽力（Hc），例如小于约2.0奥斯特（Oe） ，相对高的矩形比（Mr / Ms），例如，大于约0.90，以及比较高的各向异性场（Hk），例如大于约20Oe，或者相对于 低温处理，例如低于约300℃。 本发明的膜适用于电磁装置，例如在微型变压器芯，电感芯和磁读写头中。
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公开(公告)号：US08503126B2
公开(公告)日：2013-08-06
申请号：US13352692
申请日：2012-01-18
申请人： Yiao-Tee Hsia , Wei Peng , Timothy J. Klemmer
发明人： Yiao-Tee Hsia , Wei Peng , Timothy J. Klemmer
CPC分类号： G11B5/72 , G11B5/7325 , Y10T29/4902
摘要： A method includes activating a stress-effecting layer of a thin film structure, having the stress effecting layer adjacent to a magnetic layer, to induce a magneto-elastic anisotropy in the magnetic layer.
摘要翻译： 一种方法包括激活具有与磁性层相邻的应力作用层的薄膜结构的应力影响层，以在磁性层中引起磁弹性各向异性。
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公开(公告)号：US20090135518A1
公开(公告)日：2009-05-28
申请号：US11946535
申请日：2007-11-28
申请人： Dieter Weller , Timothy J. Klemmer , Kim Y. Lee
发明人： Dieter Weller , Timothy J. Klemmer , Kim Y. Lee
摘要： A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves. The sidewalls provide a plurality of pinning sites formed between the sidewalls for pinning magnetic domain walls in the track. At least one of the pinning sites includes a first indentation in the first sidewall and a paired second indentation in the second sidewall. In one embodiment data can be stored within the magnetic recording layer by positioning a write head adjacent the track and inducing at least two magnetic domains defining a domain wall. The domain wall migrates to one of the pinning sites in the track.
摘要翻译： 具有域壁钉扎位置的磁记录介质，包括衬底，软磁性底层和覆盖软磁性底层的磁记录层。 在一个实施例中，磁记录层具有至少两个沟槽，提供具有由凹槽形成的第一和第二侧壁的轨道。 侧壁提供形成在侧壁之间的多个钉扎部位，用于钉扎轨道中的磁畴壁。 钉扎位置中的至少一个包括第一侧壁中的第一凹陷和第二侧壁中的成对的第二凹陷。 在一个实施例中，数据可以通过将写头定位在轨道附近并且诱导限定域壁的至少两个磁畴来存储在磁记录层内。 域墙迁移到轨道中的一个钉扎位置。
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