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1.发明申请公开(公告)号：US20080261078A1
公开(公告)日：2008-10-23
申请号：US11736525
申请日：2007-04-17
IPC分类号： G11B5/33
CPC分类号： G11B5/82 , G11B5/02 , G11B5/66 , G11B2005/0005 , G11B2005/0029
摘要： A perpendicular magnetic recording system and medium has a multilayered recording layer that includes an exchange-spring structure and a ferromagnetic lateral coupling layer (LCL). The exchange-spring structure is made up of two ferromagnetically exchange-coupled magnetic layers (MAG1 and MAG2), each with perpendicular magnetic anisotropy. MAG1 and MAG2 may have a coupling layer (CL) located between them that permits ferromagnetic exchange coupling of MAG1 with MAG2. The LCL is located either above or below MAG1 and in direct contact with MAG1 and mediates an effective intergranular exchange coupling in MAG1. The ferromagnetic alloy in the LCL has significantly greater intergranular exchange coupling than the ferromagnetic alloy in MAG1, which typically will include segregants such as oxides. The LCL is preferably free of oxides or other non-metallic segregants, which would tend to reduce intergranular exchange coupling in the LCL. Because the LCL grain boundaries overlay the boundaries of the generally segregated and decoupled grains of MAG1, and the LCL and MAG1 grains are strongly coupled perpendicularly, the LCL introduces an effective intergranular exchange coupling in the MAG1.
摘要翻译： 垂直磁记录系统和介质具有包括交换弹簧结构和铁磁横向耦合层（LCL）的多层记录层。 交换弹簧结构由两个铁磁交换磁性层（MAG 1和MAG 2）组成，每个具有垂直的磁各向异性。 MAG 1和MAG 2可以具有位于它们之间的耦合层（CL），其允许MAG 1与MAG 2的铁磁交换耦合。 LCL位于MAG 1上方或下方，并与MAG 1直接接触，并介导MAG 1中有效的晶间交换耦合。 LCL中的铁磁合金具有比MAG1中的铁磁合金明显更大的晶间交换耦合，其通常将包括分离子如氧化物。 LCL优选不含氧化物或其它非金属分离剂，其倾向于减少LCL中的晶间交换偶联。 因为LCL晶界覆盖了MAG1的大体分离和去耦晶粒的边界，并且LCL和MAG1晶粒被垂直强耦合，所以LCL在MAG 1中引入有效的晶间交换耦合。
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2.发明申请PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH EXCHANGE-SPRING STRUCTURE HAVING MULTIPLE EXCHANGE-SPRING LAYERS AND RECORDING SYSTEM FOR THE MEDIUM 失效具有多个交换弹簧层的交换弹簧结构的中间磁记录介质和用于介质的记录系统公开(公告)号：US20080199735A1
公开(公告)日：2008-08-21
申请号：US11676299
申请日：2007-02-18
IPC分类号： G11B5/706
CPC分类号： G11B5/66
摘要： A perpendicular magnetic recording system uses an exchange-spring type of perpendicular magnetic recording medium. The medium has a recording layer (RL) that includes a lower media layer (ML) and a multilayer exchange-spring layer (ESL) above the ML. The high anisotropy field (high-Hk) lower ML and the multilayer ESL are exchange-coupled across a coupling layer. The multilayer ESL has at least two ESLs separated by a coupling layer, with each of the ESLs having an Hk substantially less than the Hk of the ML. The exchange-spring structure with the multilayer ESL takes advantage of the fact that the write field magnitude and write field gradient vary as a function of distance from the write pole. The thicknesses and Hk values of each of the ESLs can be independently varied to optimize the overall recording performance of the medium.
摘要翻译： 垂直磁记录系统使用交换弹簧式垂直磁记录介质。 介质具有记录层（RL），其包括ML上方的下介质层（ML）和多层交换弹簧层（ESL）。 较高的各向异性场（high-H k k N）较低的ML和多层ESL在耦合层之间交换耦合。 多层ESL具有由耦合层隔开的至少两个ESL，其中每个ESL具有基本上小于ML的H k k N。 具有多层ESL的交换弹簧结构利用写入场幅度和写场梯度随着与写入极的距离的函数而变化的优点。 可以独立地改变每个ESL的厚度和厚度值，以优化介质的整体记录性能。
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3.发明申请High Performance Perpendicular Media for Magnetic Recording with Optimal Exchange Coupling between Grains of the Media 审中-公开用于磁记录的高性能垂直介质与介质颗粒之间的最佳交换耦合公开(公告)号：US20080057349A1
公开(公告)日：2008-03-06
申请号：US11470310
申请日：2006-09-06
申请人： Andreas Klaus Berger , Hoa Van Do , Yoshihiro Ikeda , Byron Hassberg Lengsfield , Hal Jervis Rosen , Kentaro Takano , Min Xiao
发明人： Andreas Klaus Berger , Hoa Van Do , Yoshihiro Ikeda , Byron Hassberg Lengsfield , Hal Jervis Rosen , Kentaro Takano , Min Xiao
IPC分类号： G11B5/65
CPC分类号： G11B5/65 , G01R33/1207
摘要： A high performance perpendicular media with optimal exchange coupling between grains has improved thermal stability, writeability, and signal-to-noise ratio in a selected range of allowable intergranular exchange between the grains for high performing media. The writeability and byte error rate of a TaOx media are demonstrated to be substantially better than that of other designs.
摘要翻译： 具有晶粒之间的最佳交换耦合的高性能垂直介质在高性能介质的晶粒之间允许的晶间交换的选定范围内提高了热稳定性，可写性和信噪比。 证明了TaO x x介质的可写性和字节错误率显着优于其他设计。
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4.发明申请公开(公告)号：US20080070065A1
公开(公告)日：2008-03-20
申请号：US11532055
申请日：2006-09-14
摘要： A perpendicular magnetic recording system and medium has a multilayered recording layer that includes an exchange-spring structure and a ferromagnetic lateral coupling layer (LCL). The exchange-spring structure is made up of two ferromagnetically exchange-coupled magnetic layers (MAG1 and MAG2), each with perpendicular magnetic anisotropy. MAG1 and MAG2 are either in direct contact with one another or have a coupling layer (CL) located between them. The LCL is located in direct contact with MAG2 and mediates intergranular exchange coupling in MAG2. The ferromagnetic alloy in the LCL has significantly greater intergranular exchange coupling than the ferromagnetic alloy in MAG2, which typically will include segregants such as oxides. The LCL is preferably free of oxides or other segregants, which would tend to reduce intergranular exchange coupling in the LCL. Because the LCL grain boundaries overlay the boundaries of the generally segregated and decoupled grains of MAG2, and the LCL and MAG2 grains are strongly coupled perpendicularly, the LCL introduces an effective intergranular exchange coupling in the MAG2.
摘要翻译： 垂直磁记录系统和介质具有包括交换弹簧结构和铁磁横向耦合层（LCL）的多层记录层。 交换弹簧结构由两个铁磁交换磁性层（MAG 1和MAG 2）组成，每个具有垂直的磁各向异性。 MAG 1和MAG 2彼此直接接触或者具有位于它们之间的耦合层（CL）。 LCL位于与MAG 2直接接触并介导MAG 2中的晶间交换耦合。 LCL中的铁磁合金具有比MAG 2中的铁磁合金明显更大的晶间交换耦合，其通常将包括分离子如氧化物。 LCL优选不含氧化物或其它分离剂，其倾向于降低LCL中的晶间交换偶联。 因为LCL晶界覆盖了MAG2的大致分离和去耦晶粒的边界，并且LCL和MAG 2晶粒垂直强耦合，所以LCL在MAG2中引入有效的晶间交换耦合。
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5.发明申请PERPENDICULAR WRITE HEAD WITH INDEPENDENT TRAILING SHIELD DESIGNS 有权具有独立拖鞋设计的PERPENDICULAR WRITE HEAD公开(公告)号：US20080259498A1
公开(公告)日：2008-10-23
申请号：US11737707
申请日：2007-04-19
申请人： Byron Hassberg Lengsfield , James Terrence Olson , Thomas Dudley Boone , Petrus Antonius Van Der Heijden
发明人： Byron Hassberg Lengsfield , James Terrence Olson , Thomas Dudley Boone , Petrus Antonius Van Der Heijden
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/3146 , G11B5/315
摘要： A magnetic write head having independent trailing and side magnetic shields. The side shields and trailing shields are independently of one another so that they can have throat heights that are different from one another. This advantageously allows the magnetic potential between the write pole and side shields to be controlled independently of one another without relying on the side gap and trailing gap thicknesses. Furthermore, magnetic performance of the write head can be improved because the side shields can be constructed with varying tapered throat heights, while the throat height of the trailing shield can remain constant.
摘要翻译： 具有独立尾部和侧面磁屏蔽的磁性写入头。 侧护罩和后挡板彼此独立，使得它们可以具有彼此不同的喉部高度。 这有利地允许写磁极和侧屏蔽之间的磁电势彼此独立地控制，而不依赖于侧间隙和拖尾间隙厚度。 此外，可以改善写头的磁性能，因为侧屏可以构造成具有变化的锥形喉部高度，而后屏蔽的喉部高度可以保持恒定。
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6.发明申请公开(公告)号：US20080112080A1
公开(公告)日：2008-05-15
申请号：US11598419
申请日：2006-11-13
申请人： Byron Hassberg Lengsfield , Ian Robson McFadyen , James L. Nix , James Terrence Olson , Petrus Antonius Van Der Heijden , Bruce Wilson
发明人： Byron Hassberg Lengsfield , Ian Robson McFadyen , James L. Nix , James Terrence Olson , Petrus Antonius Van Der Heijden , Bruce Wilson
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/1278 , G11B5/17 , G11B5/3143
摘要： A write head for perpendicular magnetic recording having a write pole and first and second return poles. The write head can include a first magnetomotive force source for delivering a magnetomotive force to the first return pole and the write pole and a second magnetomotive force source for delivering magnetomotive force to the second return pole and the write pole. The first and second magnetomotive force sources can be operated independently of one another so that different relative amounts of magnetomotive force can be applied to the first and second return poles. A trailing magnetic shield can be connected with one of the return poles, such as the second return poles, and the variation in magnetomotive force can be used to increase the amount of flux flowing through the trailing shield when increased field gradient is desired (such as when writing a transition), and to decrease the amount of flux through the trailing shield when decreased field gradient and increased write field are desired (such as when writing a long magnetic section on a magnetic medium).
摘要翻译： 用于垂直磁记录的写头，具有写极和第一和第二返回极。 写头可以包括用于将磁动势传递到第一返回极和写极的第一磁动势源和用于将磁动势传递到第二返回极和写极的第二磁动势力源。 第一和第二磁动势源可以彼此独立地操作，使得可以将不同的相对量的磁动势施加到第一和第二返回极。 拖尾磁屏蔽可以与诸如第二返回极中的一个返回极连接，并且当需要增加磁场梯度时，可以使用磁动势的变化来增加流过后屏蔽的磁通量（例如 当写入转换时），并且当需要减小的场梯度和增加的写入场（例如当在磁介质上写入长磁场时）时，减小通过后屏蔽的通量的量。
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