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。

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。

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。

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。

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。

公开(公告)号：US07491452B2

公开(公告)日：2009-02-17

申请号：US11203360

申请日：2005-08-12

申请人： Hoa Van Do ,  Bernd Heinz ,  Yoshihiro Ikeda ,  Kentaro Takano ,  Min Xiao

发明人： Hoa Van 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。

公开(公告)号：US07482071B2

公开(公告)日：2009-01-27

申请号：US11135750

申请日：2005-05-24

申请人： Hoa Van Do ,  Bernd Heinz ,  Yoshihiro Ikeda ,  Kentaro Takano ,  Min Xiao

发明人： Hoa Van Do ,  Bernd Heinz ,  Yoshihiro Ikeda ,  Kentaro Takano ,  Min Xiao

IPC分类号： G11B5/66

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。 记录层显示出高的信噪比（SNR），矫顽力Hc大于约5000Oe，成核场Hn大于（大于负））大于约-1500Oe。

公开(公告)号：US20080138662A1

公开(公告)日：2008-06-12

申请号：US11567908

申请日：2006-12-07

申请人： Andreas Klaus Berger ,  Qing Dai ,  Hoa Van Do ,  Yoshihiro Ikeda ,  David Thomas Margulies ,  Natacha F. Supper ,  Kentaro Takano ,  Min Xiao

发明人： Andreas Klaus Berger ,  Qing Dai ,  Hoa Van Do ,  Yoshihiro Ikeda ,  David Thomas Margulies ,  Natacha F. Supper ,  Kentaro Takano ,  Min Xiao

IPC分类号： G11B5/706

CPC分类号： G11B5/66 ,  G11B5/65

摘要： A perpendicular magnetic recording medium has a multilayer recording layer (RL) structure that includes a ferromagnetic intergranular exchange enhancement layer for mediating intergranular exchange coupling in the other ferromagnetic layers in the RL structure. The RL structure may be a multilayer of a first ferromagnetic layer (MAG1) of granular polycrystalline Co alloy with Ta-oxide, a second ferromagnetic layer (MAG2) of granular polycrystalline Co alloy with Si-oxide, and an oxide-free CoCr capping layer on top of and in contact with MAG2 for mediating intergranular exchange coupling in MAG1 and MAG2. The RL structure may also be a multilayer of an intergranular exchange enhancement interlayer (IL) in between two ferromagnetic layers, MAG1 and MAG2, each with reduced or no intergranular exchange coupling. Because the IL is in direct contact with both MAG1 and MAG2, it directly mediates intergranular exchange coupling in each of MAG1 and MAG2.

摘要翻译： 垂直磁记录介质具有多层记录层（RL）结构，其包括用于介导RL结构中的其它铁磁层中的晶间交换耦合的铁磁晶间交换增强层。 RL结构可以是具有Ta氧化物的粒状多晶Co合金的第一铁磁层（MAG1），具有Si氧化物的粒状多晶Co合金的第二铁磁层（MAG 2）和不含无氧化物的CoCr的多层 在MAG1和MAG2之间介导晶间交换耦合的MAG 2顶部并与MAG 2接触的封盖层.RR结构还可以是两个铁磁层之间的晶间交换增强中间层（IL）的多层，MAG 1和MAG 2，每个都有减少或没有晶间交换耦合。 因为IL与MAG 1和MAG 2直接接触，所以它直接介导MAG1和MAG2中的每一个中的晶间交换耦合。

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。

公开(公告)号：US20070054153A1

公开(公告)日：2007-03-08

申请号：US11218702

申请日：2005-09-02

申请人： Qing Dai ,  Hoa Do ,  Min Xiao ,  Bing Yen

发明人： Qing Dai ,  Hoa Do ,  Min Xiao ,  Bing Yen

IPC分类号： G11B5/65

CPC分类号： G11B5/72 ,  G11B5/8408

摘要： A SiON overcoat for use on magnetic media for magnetic recording. The SiON overcoat is deposited by pulsed DC sputtering while applying a negative DC bias. The SiON overcoat is especially useful on perpendicular magnetic recording media because of its ability to deposit thinly and evenly on a rough, granular high coercivity recording media while maintaining excellent corrosion protection properties. A SiON overcoat can be applied less than 3 nm thick while still maintaining excellent mechanical and corrosion protection. The overcoat also has a very high density and water contact angle.

摘要翻译： 用于磁性介质磁记录的SiON外套。 通过脉冲DC溅射沉积SiON外涂层，同时施加负DC偏压。 SiON外涂层在垂直磁记录介质中特别有用，因为它能够在粗糙的颗粒状高矫顽力记录介质上薄薄均匀地沉积，同时保持优异的防腐蚀性能。 SiON外涂层可以施加小于3nm厚，同时仍然保持优异的机械和腐蚀保护。 外套也具有非常高的密度和水接触角。