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1. 发明申请

US20070212574A1 Perpendicular magnetic recording medium with multiple exchange-coupled magnetic layers having substantially similar anisotropy fields 有权
标题翻译：具有多个具有基本相似的各向异性场的交换耦合磁性层的垂直磁记录介质
公开(公告)号：US20070212574A1
公开(公告)日：2007-09-13
申请号：US11372295
申请日：2006-03-09
申请人： Andreas Berger , Hoa Do , Eric Fullerton , Yoshihiro Ikeda , Byron Lengsfield , Natacha Supper
发明人： Andreas Berger , Hoa Do , Eric Fullerton , Yoshihiro Ikeda , Byron Lengsfield , Natacha Supper
IPC分类号： G11B5/66
CPC分类号： G11B5/66
摘要： A perpendicular magnetic recording medium has an “exchange-spring” type magnetic recording layer (RL) formed of two ferromagnetic layers with substantially similar anisotropy fields that are ferromagnetically exchange-coupled by a nonmagnetic or weakly ferromagnetic coupling layer. Because the write head produces a larger magnetic field and larger field gradient at the upper portion of the RL, while the field strength decreases further inside the RL, the upper ferromagnetic layer can have a high anisotropy field. The high field and field gradient near the top of the RL, where the upper ferromagnetic layer is located, reverses the magnetization of the upper ferromagnetic layer, which then assists in the magnetization reversal of the lower ferromagnetic layer. Because both ferromagnetic layers in this exchange-spring type RL have a high anisotropy field, the thermal stability of the medium is not compromised. The medium shows improved writability, i.e., a low switching field, as well as lower intrinsic media noise, over a medium with a conventional single-layer RL.
摘要翻译：垂直磁记录介质具有由具有基本相似的各向异性场的两个铁磁层形成的“交换弹簧”型磁记录层（RL），其通过非磁性或弱铁磁耦合层进行铁磁交换耦合。由于写头在RL的上部产生较大的磁场和较大的场梯度，而在RL内的场强进一步降低，所以上铁磁层可以具有高的各向异性场。在RL的顶部附近的高场磁场梯度，其中上铁磁层位于其上，反转上铁磁层的磁化，其随后有助于下铁磁层的磁化反转。由于这种交换弹簧型RL中的两个铁磁层具有高各向异性场，所以介质的热稳定性不受影响。在具有常规单层RL的介质上，介质显示改进的可写性，即低切换场，以及较低的固有介质噪声。

2. 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。

3. 发明申请

US20070247748A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH MEDIUM HAVING THIN SOFT UNDERLAYER AND RECORDING HEAD HAVING THICK-THROAT TRAILING SHIELD 失效
标题翻译：具有中等厚度的软内磁记录系统和具有厚度跟踪屏蔽的记录头的全磁记录系统
公开(公告)号：US20070247748A1
公开(公告)日：2007-10-25
申请号：US11379858
申请日：2006-04-24
申请人： Yoshihiro Ikeda , Byron Lengsfield , James Olson , Petrus VanDerHeijden
发明人： Yoshihiro Ikeda , Byron Lengsfield , James Olson , Petrus VanDerHeijden
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/3146 , G11B5/667
摘要： A perpendicular magnetic recording data storage system combines a perpendicular medium that has a thin low-magnetic-permeability or “soft” underlayer (SUL) with a recording head that has a trailing shield (TS) with a thick throat height, i.e., a thickness in a direction orthogonal to the recording layer of the medium. The SUL is thin enough and has a low enough magnetic permeability to become saturated in a region beneath the trailing gap of the head during writing, but the throat height of the TS is thick enough to prevent the TS from becoming magnetically saturated during writing. The magnetic saturation of the SUL during writing changes the magnetic reluctance such that more of the magnetic flux going through the SUL changes direction (“field undershoot”) and goes to the TS. If the permeability of the SUL is so low (e.g., close to unity) that the SUL does not magnetically saturate, field undershoot may still occur because the reluctance from the SUL to the TS is still smaller than the reluctance from the SUL to the return pole (RP). Field undershoot enables a high write field gradient, which results in narrower magnetic transitions.
摘要翻译：垂直磁记录数据存储系统将具有薄的低磁导率或“软”底层（SUL）的垂直介质与具有厚的喉部高度的后挡板（TS）的记录头组合，即厚度在与介质的记录层正交的方向上。 SUL足够薄并且在写入期间具有足够低的磁导率以在头部的拖尾间隙下方的区域饱和，但是TS的喉部高度足够厚以防止TS在写入期间变得磁饱和。在写入期间SUL的磁饱和度改变磁阻，使得穿过SUL的更多的磁通量改变方向（“场下冲”）并且进入TS。如果SUL的磁导率如此低（例如，接近于1），SUL不会磁饱和，则由于从SUL到TS的磁阻仍然小于从SUL到返回的磁阻，所以仍然会发生场下冲。杆（RP）。场下冲可实现高写磁场梯度，从而导致较小的磁转变。

4. 发明授权

US06537638B2 Magnetic recording disk with perpendicular magnetic recording layer and multilayered underlayer structure 失效
标题翻译：具有垂直磁记录层和多层底层结构的磁记录盘
公开(公告)号：US06537638B2
公开(公告)日：2003-03-25
申请号：US09681056
申请日：2000-12-13
申请人： Hoa Do , Yoshihiro Ikeda , Yoshiaki Sonobe , Kentaro Takano
发明人： Hoa Do , Yoshihiro Ikeda , Yoshiaki Sonobe , Kentaro Takano
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/65 , Y10S428/90
摘要： A perpendicular magnetic recording disk has an underlayer structure that causes the magnetic layer to have perpendicular magnetic anisotropy and high signal-to-noise ratio (SNR). The underlayer structure comprises a B2 type body-centered-cubic (BCC) material, such as the binary alloys NiAl, RuAl and RuTi, as an underlayer, and a Ti or TiCr alloy sublayer formed directly on the underlayer. The magnetic layer, such as a CoCrPt alloy, is deposited directly on the sublayer. The magnetic layer has perpendicular magnetic anisotropy due to the sublayer yet excellent SNR because of the smaller grain size of the sublayer material formed directly on the B2 type underlayer.
摘要翻译：垂直磁记录盘具有底层结构，其使磁层具有垂直的磁各向异性和高的信噪比（SNR）。底层结构包括B2型体心立方（BCC）材料，例如作为底层的二元合金NiAl，RuAl和RuTi，以及直接形成在底层上的Ti或TiCr合金子层。磁性层，如CoCrPt合金，直接沉积在子层上。由于子层材料直接在B2型底层上形成的较小的晶粒尺寸，所以磁层由于子层而具有良好的SNR，具有垂直的磁各向异性。

5. 发明授权

US07862913B2 Oxide magnetic recording layers for perpendicular recording media 有权
标题翻译：用于垂直记录介质的氧化物磁记录层
公开(公告)号：US07862913B2
公开(公告)日：2011-01-04
申请号：US11584992
申请日：2006-10-23
申请人： Xiaoping Bian , Qing Dai , Hoa Do , Yoshihiro Ikeda , David Margulies , Mary Frances Minardi , Natacha Frederique Supper , Kentaro Takano , Min Xiao , Qi-Fan Xiao
发明人： Xiaoping Bian , Qing Dai , Hoa Do , Yoshihiro Ikeda , David Margulies , Mary Frances Minardi , Natacha Frederique Supper , Kentaro Takano , Min Xiao , Qi-Fan Xiao
IPC分类号： G11B5/66 , G11B5/706
CPC分类号： G11B5/667 , G11B5/65 , G11B5/66 , G11B5/7325
摘要： An improved structure for the construction of perpendicular recording media is disclosed. The structure includes a perpendicular recording layer with at least two oxide sublayers or a lower sublayer of a non-oxide. One structure includes an upper sublayer comprised of a Silicon-oxide, while a lower sublayer is comprised of a Tantalum-oxide. The structures provide for increased coercivity and corrosion resistance.
摘要翻译：公开了用于构建垂直记录介质的改进的结构。该结构包括具有至少两个氧化物层的垂直记录层或非氧化物的下层。一个结构包括由氧化硅构成的上层，而下层由钽氧化物构成。该结构提供增强的矫顽力和耐腐蚀性。

6. 发明申请

US20070037016A1 Perpendicular magnetic recording disk with recording layer containing selected metal oxides and formed on a reduced-thickness exchange-break layer 有权
标题翻译：垂直磁记录盘，其记录层含有选定的金属氧化物，并形成于厚度较薄的交换层
公开(公告)号：US20070037016A1
公开(公告)日：2007-02-15
申请号：US11203360
申请日：2005-08-12
申请人： Hoa Do , Bernd Heinz , Yoshihiro Ikeda , Kentaro Takano , Min Xiao
发明人： Hoa Do , Bernd Heinz , Yoshihiro Ikeda , Kentaro Takano , Min Xiao
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/7325
摘要： A perpendicular magnetic recording disk has a granular Co-based ferromagnetic alloy recording layer (RL) with oxides of a selected metal (Ta or Nb) and a reduced-thickness exchange-break layer (EBL) between the RL and the soft magnetic underlayer (SUL). A perpendicular magnetic recording system that includes the disk, the write head and the read head, has an improved ability to write to the RL because of the reduced-thickness EBL.
摘要翻译：垂直磁记录盘具有在RL和软磁性底层之间具有所选金属（Ta或Nb）和减薄厚度交换破坏层（EBL）的氧化物的粒状Co基铁磁合金记录层（RL） SUL）。由于厚度较薄的EBL，包括盘，写头和读头的垂直磁记录系统具有提高写入RL能力。

7. 发明申请

US20060269799A1 Perpendicular magnetic recording disk with improved recording layer having high oxygen content 有权
标题翻译：垂直磁记录盘，具有改善的氧含量高的记录层
公开(公告)号：US20060269799A1
公开(公告)日：2006-11-30
申请号：US11135750
申请日：2005-05-24
申请人： Hoa Do , Bernd Heinz , Yoshihiro Ikeda , Kentaro Takano , Min Xiao
发明人： Hoa Do , Bernd Heinz , Yoshihiro Ikeda , Kentaro Takano , Min Xiao
IPC分类号： G11B5/65
CPC分类号： G11B5/65 , G11B5/656 , G11B5/66 , G11B5/667 , G11B5/732
摘要： A perpendicular magnetic recording disk has an improved recording layer of a granular CoPtCr-based ferromagnetic alloy with inter-granular material made up of one or more oxides of Cr and one or more oxides of one or more of a segregant of Si, Ta, Ti, B, Nb or Hf, wherein the amount of oxygen present in the recording layer is greater than about 22 atomic percent and less than about 35 atomic percent. The amount of oxygen in the recording layer is substantially greater than the amount required for the stoichiometric oxide or oxides of the segregant or segregants, and a substantial portion of the oxygen present in the recording layer is present in the inter-granular material. The recording layer exhibits high signal-to-noise ratio (SNR), a coercivity Hc greater than about 5000 Oe and a nucleation field Hn greater (more negative) than about −1500 Oe.
摘要翻译：垂直磁记录盘具有改进的基于CoPtCr的铁磁性合金的记录层，其具有由一种或多种Cr的一种或多种氧化物和一种或多种Si，Ta，Ti分离的一种或多种氧化物构成的颗粒间材料，B，Nb或Hf，其中存在于记录层中的氧的量大于约22原子％且小于约35原子％。记录层中的氧气量基本上大于分离器或分离器的化学计量氧化物或氧化物所需的量，并且记录层中存在的大部分氧气存在于颗粒间材料中。记录层表现出高的信噪比（SNR），大于约5000Oe的矫顽力H c和大于（更负）的成核场H N n 约-1500 Oe。

8. 发明申请

US20080096053A1 Oxide magnetic recording layers for perpendicular recording media 有权
标题翻译：用于垂直记录介质的氧化物磁记录层
公开(公告)号：US20080096053A1
公开(公告)日：2008-04-24
申请号：US11584992
申请日：2006-10-23
申请人： Xiaoping Bian , Qing Dai , Hoa Do , Yoshihiro Ikeda , David Margulies , Mary Frances Minardi , Natacha Frederique Supper , Kentaro Takano , Min Xiao , Qi-Fan Xiao
发明人： Xiaoping Bian , Qing Dai , Hoa Do , Yoshihiro Ikeda , David Margulies , Mary Frances Minardi , Natacha Frederique Supper , Kentaro Takano , Min Xiao , Qi-Fan Xiao
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/65 , G11B5/66 , G11B5/7325
摘要： An improved structure for the construction of perpendicular recording media is disclosed. The structure includes a perpendicular recording layer with at least two oxide sublayers or a lower sublayer of a non-oxide. One structure includes an upper sublayer comprised of a Silicon-oxide, while a lower sublayer is comprised of a Tantalum-oxide. The structures provide for increased coercivity and corrosion resistance.
摘要翻译：公开了用于构建垂直记录介质的改进的结构。该结构包括具有至少两个氧化物层的垂直记录层或非氧化物的下层。一个结构包括由氧化硅构成的上层，而下层由钽氧化物构成。该结构提供增强的矫顽力和耐腐蚀性。

9. 发明申请

US20090080110A1 PERPENDICULAR RECORDING MAGNETIC MEDIA WITH IMBALANCED MAGNETIC MOMENT MULTILAYER CAP STRUCTURE 审中-公开
标题翻译：具有不平衡磁性多层结构的全磁记录磁介质
公开(公告)号：US20090080110A1
公开(公告)日：2009-03-26
申请号：US11860441
申请日：2007-09-24
申请人： Andreas Berger , Yoshihiro Ikeda , Kentaro Takano
发明人： Andreas Berger , Yoshihiro Ikeda , Kentaro Takano
IPC分类号： G11B5/127
CPC分类号： G11B5/02 , G11B5/66
摘要： A perpendicular magnetic recording media is provided having an imbalanced magnetic moment multilayer cap. The perpendicular magnetic recording media comprises a granular layer, and a multilayer cap structure exchange coupled to the granular layer. The multilayer cap structure includes upper and lower magnetic layers separated by a non-magnetic layer, where the upper magnetic layer has a magnetic moment greater than the lower magnetic layer. When an external field is applied to the recording media, a larger moment torque is triggered at the surface, and more efficient switching is facilitated. The upper magnetic layer may have a higher magnetic moment than the lower magnetic layer if the upper magnetic layer comprises a larger magnetic moment material than the lower magnetic layer. The upper magnetic layer may also have a higher magnetic moment than the lower magnetic layer if the upper magnetic layer has a greater thickness than the lower magnetic layer.
摘要翻译：提供具有不平衡磁矩多层盖的垂直磁记录介质。垂直磁记录介质包括粒状层，以及与颗粒层耦合的多层帽结构交换。多层盖结构包括由非磁性层分离的上磁层和下磁层，其中上磁层的磁矩大于下磁层。当向记录介质施加外部场时，在表面触发更大的力矩，并且更有效地切换。如果上部磁性层包含比下部磁性层更大的磁矩材料，则上磁性层的磁矩可能比下部磁性层高。如果上部磁性层的厚度大于下部磁性层的厚度，则上部磁性层也可以具有比下部磁性层更高的磁矩。

10. 发明授权

US09127365B2 Generation of multilayer structures in a single sputtering module of a multi-station magnetic recording media fabrication tool 有权
标题翻译：在多台磁记录介质制造工具的单个溅射模块中生成多层结构
公开(公告)号：US09127365B2
公开(公告)日：2015-09-08
申请号：US12032669
申请日：2008-02-16
申请人： Andreas K. Berger , Yoshihiro Ikeda , Byron H. Lengsfield, III , David T. Margulies , Ernesto E. Marinero
发明人： Andreas K. Berger , Yoshihiro Ikeda , Byron H. Lengsfield, III , David T. Margulies , Ernesto E. Marinero
IPC分类号： C23C14/34 , C23C14/56 , G11B5/84 , G11B5/851 , G11B5/66
CPC分类号： C23C14/568 , G11B5/66 , G11B5/8404 , G11B5/851
摘要： Methods of fabricating perpendicular magnetic recording media are disclosed. The multilayer structures of the perpendicular magnetic recording media are fabricated by varying the sputtering conditions (i.e., pressure, sputtering gas, etc) in a single sputtering module so that multiple sputtering modules are not needed to form the multilayer structures. These fabrication methods allow sputtering tools with a limited number of chambers, which were designed for the manufacture of longitudinal media, to be used to efficiently produce perpendicular media architectures which heretofore required a large number of sputtering modules. It is further shown that media structures involving a geometric weak-link architecture are suited for these fabrication techniques.
摘要翻译：公开了制造垂直磁记录介质的方法。通过改变单个溅射模块中的溅射条件（即，压力，溅射气体等）来制造垂直磁记录介质的多层结构，从而不需要多个溅射模块来形成多层结构。这些制造方法允许具有有限数量的腔室的溅射工具，其被设计用于制造纵向介质，以用于有效地产生迄今为止需要大量溅射模块的垂直介质结构。进一步表明涉及几何弱链结构的介质结构适用于这些制造技术。

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