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1. 发明授权

US08748018B2 Patterned perpendicular magnetic recording medium with data islands having a flux channeling layer below the recording layer 有权
标题翻译：具有数据岛的图案化垂直磁记录介质，其具有在记录层下方的通量沟道层
公开(公告)号：US08748018B2
公开(公告)日：2014-06-10
申请号：US12577344
申请日：2009-10-12
申请人： Thomas Hauet , Olav Hellwig , Kentaro Takano
发明人： Thomas Hauet , Olav Hellwig , Kentaro Takano
IPC分类号： G11B5/66
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/012 , G11B5/66 , G11B5/7325 , G11B5/746 , G11B5/82
摘要： A patterned perpendicular magnetic recording medium, such as a disk for use in hard disk drives, has a flux channeling layer (FCL) located below the recording layer (RL) in each of the discrete data islands. The disk includes a substrate, a soft underlayer (SUL) of soft magnetically permeable material on the substrate, and a nonmagnetic exchange break layer (EBL) on the SUL. A nonmagnetic separation layer (SL) is located between the FCL and the RL in the islands. The FCL has an anisotropy field substantially lower than the anisotropy field of the RL, and a magnetization equal to or higher than the magnetization of the RL. The FCL is saturated at a much lower field than the RL and thus channels the magnetic flux from the write head through the island positions. The dipolar fields from the RL above the FCL polarize the magnetization of the FCL parallel to the magnetization direction of the RL in the absence of an external field, to thereby enhance the readback signal.
摘要翻译：图形化的垂直磁记录介质，例如用于硬盘驱动器的盘，在每个离散数据岛中具有位于记录层（RL）下方的通量沟道层（FCL）。盘包括衬底，衬底上的柔软的可渗透材料的软底层（SUL）和SUL上的非磁性交换断裂层（EBL）。非磁性分离层（SL）位于FCL和岛之间的RL之间。 FCL具有大大低于RL的各向异性场的各向异性场，以及等于或高于RL的磁化强度的磁化强度。 FCL在比RL低得多的场处饱和，从而将来自写入头的磁通量通过岛位置。来自FCL以上的RL的偶极场在没有外部场的情况下使FCL的磁化平行于RL的磁化方向偏振，从而增强回读信号。

2. 发明申请

US20110085264A1 PATTERNED PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH DATA ISLANDS HAVING A FLUX CHANNELING LAYER BELOW THE RECORDING LAYER 有权
标题翻译：带有记录层下面的通道通道层的数据岛的图形磁性记录介质
公开(公告)号：US20110085264A1
公开(公告)日：2011-04-14
申请号：US12577344
申请日：2009-10-12
申请人： Thomas Hauet , Olav Hellwig , Kentaro Takano
发明人： Thomas Hauet , Olav Hellwig , Kentaro Takano
IPC分类号： G11B5/127 , G11B5/667
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/012 , G11B5/66 , G11B5/7325 , G11B5/746 , G11B5/82
摘要： A patterned perpendicular magnetic recording medium, such as a disk for use in hard disk drives, has a flux channeling layer (FCL) located below the recording layer (RL) in each of the discrete data islands. The disk includes a substrate, a soft underlayer (SUL) of soft magnetically permeable material on the substrate, and a nonmagnetic exchange break layer (EBL) on the SUL. A nonmagnetic separation layer (SL) is located between the FCL and the RL in the islands. The FCL has an anisotropy field substantially lower than the anisotropy field of the RL, and a magnetization equal to or higher than the magnetization of the RL. The FCL is saturated at a much lower field than the RL and thus channels the magnetic flux from the write head through the island positions. The dipolar fields from the RL above the FCL polarize the magnetization of the FCL parallel to the magnetization direction of the RL in the absence of an external field, to thereby enhance the readback signal.
摘要翻译：图形化的垂直磁记录介质，例如用于硬盘驱动器的盘，在每个离散数据岛中具有位于记录层（RL）下方的通量沟道层（FCL）。盘包括衬底，衬底上的柔软的可渗透材料的软底层（SUL）和SUL上的非磁性交换断裂层（EBL）。非磁性分离层（SL）位于FCL和岛之间的RL之间。 FCL具有大大低于RL的各向异性场的各向异性场，以及等于或高于RL的磁化强度的磁化强度。 FCL在比RL低得多的场处饱和，从而将来自写入头的磁通量通过岛位置。来自FCL以上的RL的偶极场在没有外部场的情况下使FCL的磁化平行于RL的磁化方向偏振，从而增强回读信号。

3. 发明授权

US08129043B2 System, method and apparatus for strain-assisted magnetic recording for controlling switching field and tightening switching field distribution in bit patterned media 有权
标题翻译：用于控制开关场的应变辅助磁记录的系统，方法和装置以及在位图形介质中紧固开关场分布
公开(公告)号：US08129043B2
公开(公告)日：2012-03-06
申请号：US12423258
申请日：2009-04-14
申请人： Thomas Hauet , Olav Hellwig , Lidu Huang
发明人： Thomas Hauet , Olav Hellwig , Lidu Huang
IPC分类号： G11B5/66
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/02 , G11B5/743 , G11B5/746 , G11B5/855 , G11B2005/0002
摘要： Multilayer magnetic structures control the switching field and tighten the switching field distribution in bit patterned media. A strain-inducing layer is excited, e.g., by a localized magnetic field or a localized thermal heating or a voltage, and induces a strain on the magnetic layer(s) of the patterned bit to initiate switching of the bit magnetization. The strain induced on the magnetic layer forces a rotation or an amplitude variation of the magnetic layer anisotropy. A localized magnetic field is simultaneously or subsequently applied to complete the switching of the bit magnetization. The invention provides control of switching field and switching field distribution for bit-patterned media devices.
摘要翻译：多层磁性结构控制开关场，并拧紧位图形介质中的开关场分布。应变诱发层例如通过局部磁场或局部热加热或电压而被激发，并且在图案化位的磁性层上引起应变以启动位磁化的切换。在磁性层上诱发的应变促使磁性层各向异性的旋转或振幅变化。同时或随后施加局部磁场以完成位磁化的切换。本发明提供了针对位图形媒体设备的开关场和开关场分布的控制。

4. 发明申请

US20100259846A1 SYSTEM, METHOD AND APPARATUS FOR STRAIN-ASSISTED MAGNETIC RECORDING FOR CONTROLLING SWITCHING FIELD AND TIGHTENING SWITCHING FIELD DISTRIBUTION IN BIT PATTERNED MEDIA 有权
标题翻译：用于控制磁盘记录的系统，方法和装置用于控制切换场地和加密切换在位图形媒体中的场分布
公开(公告)号：US20100259846A1
公开(公告)日：2010-10-14
申请号：US12423258
申请日：2009-04-14
申请人： Thomas Hauet , Olav Hellwig , Lidu Huang
发明人： Thomas Hauet , Olav Hellwig , Lidu Huang
IPC分类号： G11B5/02
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/02 , G11B5/743 , G11B5/746 , G11B5/855 , G11B2005/0002
摘要： Multilayer magnetic structures control the switching field and tighten the switching field distribution in bit patterned media. A strain-inducing layer is excited, e.g., by a localized magnetic field or a localized thermal heating or a voltage, and induces a strain on the magnetic layer(s) of the patterned bit to initiate switching of the bit magnetization. The strain induced on the magnetic layer forces a rotation or an amplitude variation of the magnetic layer anisotropy. A localized magnetic field is simultaneously or subsequently applied to complete the switching of the bit magnetization. The invention provides control of switching field and switching field distribution for bit-patterned media devices.
摘要翻译：多层磁性结构控制开关场，并拧紧位图案介质中的开关场分布。应变诱发层例如通过局部磁场或局部热加热或电压而被激发，并且在图案化位的磁性层上引起应变以启动位磁化的切换。在磁性层上诱发的应变促使磁性层各向异性的旋转或振幅变化。同时或随后施加局部磁场以完成位磁化的切换。本发明提供了针对位图形媒体设备的开关场和开关场分布的控制。

5. 发明授权

US08163405B2 System, method and apparatus for multiple anisotropy layered magnetic structures for controlling reversal mechanism and tightening of switching field distribution in bit patterned media 有权
标题翻译：用于控制反转机构的多个各向异性分层磁结构的系统，方法和装置以及在位图形介质中切换场分布的紧固
公开(公告)号：US08163405B2
公开(公告)日：2012-04-24
申请号：US12412403
申请日：2009-03-27
申请人： Thomas Hauet , Olav Hellwig , Manfred Ernst Schabes
发明人： Thomas Hauet , Olav Hellwig , Manfred Ernst Schabes
IPC分类号： G11B5/66
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743 , G11B5/82
摘要： Multiple anisotropy layered magnetic structures for controlling reversal mechanism and tightening of switching field distribution in bit patterned media are disclosed. The invention extends the exchange spring concept to more variable and sophisticated structures. Three or more layers with different anisotropy or anisotropy gradients increase writeability gains beyond the simple hard/soft bilayer exchange spring concept for BPM. The structures have a thin very hard, high anisotropy center layer that acts as a threshold or pinning layer for domain wall propagation through the entire media structure. In addition or alternatively, a thin very soft, low anisotropy center layer in between the commonly used soft surface layer and hard media layer allows quick initial propagation of the domain wall into the center of the media structure. Various properties of the media structures can be tuned more independently for optimization if using more advanced multi-anisotropy layer stacks.
摘要翻译：公开了用于控制反向机构的多个各向异性分层磁结构和紧固位图案化介质中的开关场分布。本发明将交换弹簧概念扩展到更可变和复杂的结构。具有不同各向异性或各向异性梯度的三层或更多层可提高超过BPM的简单硬/软双层交换弹簧概念的可写性增益。该结构具有薄的非常硬，高各向异性中心层，其作为用于通过整个介质结构传播的畴壁的阈值或钉扎层。另外或替代地，在通常使用的软表面层和硬介质层之间的薄的非常柔软的低各向异性中心层允许域壁快速地初始传播到介质结构的中心。如果使用更先进的多向各向异性层堆叠，则可以更独立地调整介质结构的各种特性以进行优化。

6. 发明申请

US20100247969A1 SYSTEM, METHOD AND APPARATUS FOR MULTIPLE ANISOTROPY LAYERED MAGNETIC STRUCTURES FOR CONTROLLING REVERSAL MECHANISM AND TIGHTENING OF SWITCHING FIELD DISTRIBUTION IN BIT PATTERNED MEDIA 有权
标题翻译：用于控制反转机械的多个非均匀层状磁结构的系统，方法和装置，并在位图形媒体中开关切换场分布
公开(公告)号：US20100247969A1
公开(公告)日：2010-09-30
申请号：US12412403
申请日：2009-03-27
申请人： Thomas Hauet , Olav Hellwig , Manfred Ernst Schabes
发明人： Thomas Hauet , Olav Hellwig , Manfred Ernst Schabes
IPC分类号： G11B5/66 , G11B5/64 , G11B5/65
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743 , G11B5/82
摘要： Multiple anisotropy layered magnetic structures for controlling reversal mechanism and tightening of switching field distribution in bit patterned media are disclosed. The invention extends the exchange spring concept to more variable and sophisticated structures. Three or more layers with different anisotropy or anisotropy gradients increase writeability gains beyond the simple hard/soft bilayer exchange spring concept for BPM. The structures have a thin very hard, high anisotropy center layer that acts as a threshold or pinning layer for domain wall propagation through the entire media structure. In addition or alternatively, a thin very soft, low anisotropy center layer in between the commonly used soft surface layer and hard media layer allows quick initial propagation of the domain wall into the center of the media structure. Various properties of the media structures can be tuned more independently for optimization if using more advanced multi-anisotropy layer stacks.
摘要翻译：公开了用于控制反向机构的多个各向异性分层磁结构和紧固位图案化介质中的开关场分布。本发明将交换弹簧概念扩展到更可变和复杂的结构。具有不同各向异性或各向异性梯度的三层或更多层可提高超过BPM的简单硬/软双层交换弹簧概念的可写性增益。该结构具有薄的非常硬，高各向异性中心层，其作为用于通过整个介质结构传播的畴壁的阈值或钉扎层。另外或替代地，在通常使用的软表面层和硬介质层之间的薄的非常柔软的低各向异性中心层允许域壁快速地初始传播到介质结构的中心。如果使用更先进的多向各向异性层堆叠，则可以更独立地调整介质结构的各种特性以进行优化。

7. 发明授权

US08399051B1 Method for making a patterned perpendicular magnetic recording disk having a FePt or CoPt chemically ordered recording layer 有权
标题翻译：制造具有FePt或CoPt化学有序记录层的图案化垂直磁记录盘的方法
公开(公告)号：US08399051B1
公开(公告)日：2013-03-19
申请号：US13248086
申请日：2011-09-29
申请人： Olav Hellwig , Jeffrey S. Lille , Andrew Thomas McCallum , Oleksandr Mosendz , Dieter K. Weller
发明人： Olav Hellwig , Jeffrey S. Lille , Andrew Thomas McCallum , Oleksandr Mosendz , Dieter K. Weller
IPC分类号： B05D5/12
CPC分类号： G11B5/855
摘要： A method for making a bit-patterned-media (BPM) magnetic recording disk includes depositing a FePt (or CoPt) alloy recording layer, and then depositing a sealing layer on the FePt layer before high-temperature annealing. The high-temperature annealing causes the FePt to become substantially chemically-ordered in the L10 phase. After annealing, the sealing layer is removed. The sealing layer prevents nanoclustering and agglomeration of the FePt material at the surface of the FePt layer and the sealing layer, which would result in undesirable high surface roughness of the FePt, making patterning of the FePt layer difficult. The FePt layer can be patterned into the discrete islands for the BPM disk either before deposition of the sealing layer or after deposition and removal of the sealing layer. After patterning and removal of the sealing layer, the disk protective overcoat is deposited over the discrete data islands.
摘要翻译：一种制造位图形介质（BPM）磁记录盘的方法包括沉积FePt（或CoPt）合金记录层，然后在高温退火之前在FePt层上沉积密封层。高温退火使FePt在L10相中变得基本化学排序。退火后，去除密封层。密封层防止FePt材料在FePt层和密封层的表面的纳米聚集和聚集，这将导致FePt的不希望的高表面粗糙度，使得FePt层的图案化变得困难。在沉积密封层之前或在沉积和去除密封层之后，FePt层可以被图案化成用于BPM盘的离散岛。在图案化和去除密封层之后，盘保护外涂层沉积在离散的数据岛上。

8. 发明授权

US08252153B2 Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches 有权
标题翻译：具有磁化伺服柱和相对磁化的伺服沟槽的伺服区域的图案化介质垂直磁记录盘
公开(公告)号：US08252153B2
公开(公告)日：2012-08-28
申请号：US13103143
申请日：2011-05-09
申请人： Thomas R Albrecht , Zvonimir Z. Bandic , Olav Hellwig , Gabriel Zeltzer
发明人： Thomas R Albrecht , Zvonimir Z. Bandic , Olav Hellwig , Gabriel Zeltzer
IPC分类号： C23C14/00 , C23C14/32
CPC分类号： G11B5/82 , B82Y10/00 , C23C14/04 , C23C14/16 , G11B5/59688 , G11B5/743 , G11B5/746 , G11B5/855
摘要： A patterned perpendicular magnetic recording disk has a pre-patterned disk substrate with pillars and trenches arranged in data regions and servo regions. In the data regions, the height of the data pillars is equal to or greater than the spacing between the data pillars, while in the servo regions the height of the servo pillars is less than the spacing between the servo pillars. A magnetic recording material with perpendicular magnetic anisotropy is deposited over the entire disk substrate, which results in magnetic material on the tops of the data pillars and servo pillars and in the servo trenches. The material in the data trenches is either nonmagnetic or discontinuous. After the application of a high DC magnetic field in one perpendicular direction and a low DC magnetic field in the opposite direction, the resulting disk has patterned servo sectors with servo pillars all magnetized in the same perpendicular direction and servo trenches magnetized in the opposite perpendicular direction.
摘要翻译：图案化的垂直磁记录盘具有预先图案化的盘基片，其具有布置在数据区域和伺服区域中的柱状物和沟槽。在数据区域中，数据柱的高度等于或大于数据柱之间的间距，而在伺服区域中，伺服柱的高度小于伺服柱之间的间距。具有垂直磁各向异性的磁记录材料沉积在整个盘基底上，这导致数据柱和伺服柱顶部以及伺服槽中的磁性材料。数据沟槽中的材料是非磁性的或不连续的。在相反方向上在一个垂直方向和低DC磁场上施加高DC磁场之后，所得到的盘具有带有伺服柱的图案化伺服扇区，其中所有伺服柱都在相同的垂直方向上被磁化，并且伺服沟槽在相反的垂直方向上被磁化。

9. 发明申请

US20110268993A1 SILICON/GOLD SEED STRUCTURE FOR CRYSTALLINE ALIGNMENT IN A FILM STACK 有权
标题翻译：硅胶/黄金结晶在电影胶卷中的结晶对齐
公开(公告)号：US20110268993A1
公开(公告)日：2011-11-03
申请号：US12772179
申请日：2010-05-01
申请人： Olav Hellwig , Dieter K. Weller
发明人： Olav Hellwig , Dieter K. Weller
IPC分类号： G11B5/62 , G11B5/66 , G11B5/738
CPC分类号： G11B5/732 , G11B5/66 , G11B5/667 , G11B5/7325 , G11B5/855 , Y10T428/12076 , Y10T428/12465 , Y10T428/12472 , Y10T428/12674
摘要： A silicon/gold (Si/Au) bilayer seed structure is located in a film stack between an amorphous or crystalline lower layer and an upper layer with a well-defined crystalline structure. The seed structure includes a Si layer on the generally flat surface of the lower layer and a Au layer on the Si layer. The Si/Au interface initiates the growth of the Au layer with a face-centered-cubic (fcc) crystalline structure with the (111) plane oriented in-plane. The upper layer grown on the Au layer has a fcc or hexagonal-close-packed (hcp) crystalline structure. If the upper layer is a fcc material its [111] direction is oriented substantially perpendicular to the (111) plane of the Au layer and if the upper layer is a hcp material, its c-axis is oriented substantially perpendicular to the (111) plane of the Au layer.
摘要翻译：硅/金（Si / Au）双层种子结构位于非晶或结晶下层与具有明确定义的结晶结构的上层之间的膜叠层中。种子结构包括在下层的大致平坦表面上的Si层和Si层上的Au层。 Si / Au界面以（111）面定向在平面内的面心立方（fcc）晶体结构引发Au层的生长。在Au层上生长的上层具有fcc或六方密堆积（hcp）晶体结构。如果上层是fcc材料，其[111]方向定向成基本上垂直于Au层的（111）面，并且如果上层是hcp材料，则其c轴基本垂直于（111）面定向， Au层的平面。

10. 发明授权

US08021769B2 Patterned perpendicular magnetic recording medium with exchange coupled recording layer structure and magnetic recording system using the medium 有权
标题翻译：具有交换耦合记录层结构的图案垂直磁记录介质和使用介质的磁记录系统
公开(公告)号：US08021769B2
公开(公告)日：2011-09-20
申请号：US11751823
申请日：2007-05-22
申请人： Andreas Klaus Berger , Eric E. Fullerton , Olav Hellwig , Byron Hassberg Lengsfield, III , Ernesto E. Marinero
发明人： Andreas Klaus Berger , Eric E. Fullerton , Olav Hellwig , Byron Hassberg Lengsfield, III , Ernesto E. Marinero
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/65 , G11B5/855
摘要： A patterned perpendicular magnetic recording medium has discrete magnetic islands, each of which has a recording layer (RL) structure that comprises two exchange-coupled ferromagnetic layers. The RL structure may be an “exchange-spring” RL structure with an upper ferromagnetic layer (MAG2), sometimes called the exchange-spring layer (ESL), ferromagnetically coupled to a lower ferromagnetic layer (MAG1), sometimes called the media layer (ML). The RL structure may also include a coupling layer (CL) between MAG1 and MAG2 that permits ferromagnetic coupling. The interlayer exchange coupling between MAG1 and MAG2 may be optimized, in part, by adjusting the materials and thickness of the CL. The RL structure may also include a ferromagnetic lateral coupling layer (LCL) that is in contact with at least one of MAG1 and MAG2 for mediating intergranular exchange coupling in the ferromagnetic layer or layers with which it is in contact (MAG2 or MAG1). The ferromagnetic alloy in the LCL has significantly greater intergranular exchange coupling than the ferromagnetic alloy with which it is in contact (MAG2 or MAG1).
摘要翻译：图案化的垂直磁记录介质具有离散的磁岛，每个磁岛具有包含两个交换耦合的铁磁层的记录层（RL）结构。 RL结构可以是具有上铁磁层（MAG2）的“交换弹簧”RL结构，有时称为交换弹簧层（ESL），铁磁耦合到下铁磁层（MAG1），有时称为介质层 ML）。 RL结构还可以包括允许铁磁耦合的MAG1和MAG2之间的耦合层（CL）。可以通过调整CL的材料和厚度来部分地优化MAG1和MAG2之间的层间交换耦合。 RL结构还可以包括与MAG1和MAG2中的至少一个接触的铁磁侧向耦合层（LCL），用于介导与其接触的铁磁层（MAG2或MAG1）中的晶间交换耦合。 LCL中的铁磁合金与其接触的铁磁合金（MAG2或MAG1）具有明显更大的晶间交换耦合。

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