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公开(公告)号：US08603650B2
公开(公告)日：2013-12-10
申请号：US10576755
申请日：2005-06-29
Applicant: Yoshiaki Sonobe , Teiichiro Umezawa , Chikara Takasu
Inventor： Yoshiaki Sonobe , Teiichiro Umezawa , Chikara Takasu
IPC: G11B5/673
CPC classification number: H01F10/007 , B82Y25/00 , G11B5/66 , G11B5/851 , G11B2005/0029 , H01F10/16 , H01F41/18
Abstract: A magnetic disk 10 for use in perpendicular magnetic recording has at least a magnetic recording layer on a substrate 1. The magnetic recording layer is composed of a ferromagnetic layer 5 of a granular structure containing silicon (Si) or an oxide of silicon (Si) between crystal grains containing cobalt (Co), a stacked layer 7 having a first layer containing cobalt (Co) or a Co alloy and a second layer containing palladium (Pd) or platinum (Pt), and a spacer layer 6 interposed between the ferromagnetic layer 5 and the stacked layer 7. After forming the ferromagnetic layer 5 on the substrate 1 by sputtering in an argon gas atmosphere, the stacked layer 7 is formed by sputtering in the argon gas atmosphere at a gas pressure lower than that used when forming the ferromagnetic layer 5.
Abstract translation: 用于垂直磁记录的磁盘10在基板1上至少具有磁记录层。磁记录层由含有硅（Si）或硅（Si）的氧化物的粒状结构的铁磁层5构成， 在含有钴（Co）的晶粒之间，具有包含钴（Co）或Co合金的第一层的堆叠层7和包含钯（Pd）或铂（Pt）的第二层的间隔层6和介于铁磁性 层5和堆叠层7.在氩气气氛中通过溅射在基板1上形成铁磁层5之后，层叠层7通过在氩气气氛中以比形成 铁磁层5。
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2.发明授权Perpendicular recording media with sublayers of oxide dopant magnetic materials 有权具有氧化物掺杂剂磁性材料子层的垂直记录介质公开(公告)号：US08168309B2
公开(公告)日：2012-05-01
申请号：US12540397
申请日：2009-08-13
Applicant: Gunn Choe , Mohammad T. Mirzamaani , Kai Tang , Jinliu Wang
Inventor： Gunn Choe , Mohammad T. Mirzamaani , Kai Tang , Jinliu Wang
Abstract: Perpendicular recording media with sublayers of dual oxide dopant magnetic materials are disclosed. The magnetic layer may comprise multiple sublayers of magnetic materials. In each sublayer, dual oxide dopants are incorporated. The compositions of the sublayers can be the same or different depending on the application. The magnetic layer may be deposited using a target comprising a mixture of CoPtCrB and dual oxides as dopants. The layer deposited with such targets can be the entire magnetic layer or a sublayer.
Abstract translation: 公开了具有双重氧化物掺杂剂磁性材料的子层的垂直记录介质。 磁性层可以包括多个磁性材料的子层。 在每个子层中，掺入双重氧化物掺杂剂。 根据应用，子层的组成可以相同或不同。 可以使用包含CoPtCrB和双重氧化物的混合物作为掺杂剂的靶沉积磁性层。 沉积有这样的靶的层可以是整个磁性层或子层。
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3.发明授权公开(公告)号：US07867638B2
公开(公告)日：2011-01-11
申请号：US12274879
申请日：2008-11-20
Applicant: Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
Inventor： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
Abstract: A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide.
Abstract translation: 一种磁记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层的非磁性基板上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层，以及 保护层。 垂直磁性层包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且还含有Pt并含有氧化物的层，并且至少另一个磁性层是具有Co 作为主要成分，并含有Cr，也不含氧化物。
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公开(公告)号：US20100149676A1
公开(公告)日：2010-06-17
申请号：US12506042
申请日：2009-07-20
Applicant: Sakhrat Khizorev , Nissim Amos , Rabee Ikkawi , Robert Haddon
Inventor： Sakhrat Khizorev , Nissim Amos , Rabee Ikkawi , Robert Haddon
CPC classification number: G11B5/66 , G11B5/02 , G11B5/1278 , G11B5/82 , G11B11/10534 , G11B11/10543 , G11B11/10554 , G11B11/10582 , G11B11/10584 , G11B11/10586 , G11B2005/0005
Abstract: A multilayered three-dimensional media having a plurality of magnetic sublayers, each of the magnetic sublayers being separated from one another by a non-magnetic layer. The plurality of magnetic sublayers can be a stack of one or more coupled Co/Pd or Co/Pt layers; a layer of Co—Cr alloys optionally containing TiO2, SiO2, C, Pt, and B; a stack of one or more Co—Cr—Pt/Pt layers; a stack of one or more Co—Cr—Pd/Pd layers; and/or a stack of one or more layers of Fe—Pt, Fe—Pd, Co—Pt, and Co—Pd materials in an L10 phase. The non-magnetic layers are Pd, Pt, Ti, Ta, Cu, Au, Ag, MgO, or/and ITO. In addition, a multilayered three-dimensional recording system is disclosed, which includes a three-dimensional media, the three-dimensional media includes a plurality of magnetic sublayers, wherein each magnetic sublayer is adapted for writing data to; and a recording head having a trailing edge, and wherein the trailing edge has a higher permeability than the recording head.
Abstract translation: 具有多个磁性子层的多层三维介质，每个磁性子层通过非磁性层彼此分离。 多个磁性子层可以是一个或多个耦合的Co / Pd或Co / Pt层的堆叠; 任选含有TiO 2，SiO 2，C，Pt和B的Co-Cr合金层; 一个或多个Co-Cr-Pt / Pt层的堆叠; 一个或多个Co-Cr-Pd / Pd层的堆叠; 和/或L10相中的一层或多层Fe-Pt，Fe-Pd，Co-Pt和Co-Pd材料。 非磁性层是Pd，Pt，Ti，Ta，Cu，Au，Ag，MgO或/和ITO。 另外，公开了一种多层三维记录系统，其包括三维介质，三维介质包括多个磁性子层，其中每个磁性子层适于写入数据; 以及具有后缘的记录头，并且其中所述后缘具有比所述记录头更高的磁导率。
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5.发明授权Perpendicular magnetic recording medium with exchange-spring structure having multiple exchange-spring layers and recording system for the medium 失效具有交换弹簧结构的垂直磁记录介质具有多个交换弹簧层和用于介质的记录系统公开(公告)号：US07572526B2
公开(公告)日：2009-08-11
申请号：US11676299
申请日：2007-02-18
Applicant: Andreas Klaus Berger , Eric E. Fullerton , Byron Hassberg Lengsfield, III
CPC classification number: G11B5/66
Abstract: 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.
Abstract translation: 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）。 高各向异性场（high-Hk）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，每个ESL具有基本上小于ML的Hk的Hk。 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H k值以优化介质的整体记录性能。
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Patent Agency Ranking
6.发明授权Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiOx layer and method of manufacturing same 失效利用第一钴磁性层和第二Pd-SiOx层的垂直磁记录介质及其制造方法公开(公告)号：US07510788B2
公开(公告)日：2009-03-31
申请号：US11069920
申请日：2005-03-01
Applicant: Yasuyuki Kawada
Inventor： Yasuyuki Kawada
CPC classification number: G11B5/66 , G11B5/65 , G11B5/7325
Abstract: A perpendicular magnetic recording medium is disclosed that exhibits reduced media noise and enhanced thermal stability of recorded magnetization, and thus provides a medium of high recording density and excellent read-write performance. The perpendicular magnetic recording medium comprises a magnetic film on a nonmagnetic substrate. The magnetic film is a multilayered lamination film composed of alternately laminated first magnetic layers of cobalt and second magnetic layers of palladium, the second magnetic layers containing SiO2. By setting a ratio of Ku2 to Ku to a value not smaller than a specified value, the compatibility between the ease of writing-in to the perpendicular magnetic recording medium by a head and the thermal stability of recorded magnetization is more improved.
Abstract translation: 公开了一种垂直磁记录介质，其表现出降低的介质噪声和增强的记录磁化的热稳定性，从而提供高记录密度和优异的读写性能的介质。 垂直磁记录介质包括在非磁性基底上的磁性膜。 磁性膜是由交替叠层的钴的第一磁性层和钯的第二磁性层构成的多层叠层膜，第二磁性层含有SiO 2。 通过将Ku2与Ku的比率设定为不小于规定值的值，能够更好地提高由磁头向垂直磁记录介质写入容易性和记录磁化的热稳定性的兼容性。
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7.发明授权公开(公告)号：US07470474B2
公开(公告)日：2008-12-30
申请号：US10552445
申请日：2004-04-07
Applicant: Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
Inventor： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
Abstract: A magnetic recording medium which is provided on a nonmagnetic substrate 1 with at least an orientation-controlling layer 3 for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer 4 having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate 1, and a protective layer 5 and characterized in that the perpendicularly magnetic layer 4 includes two or more magnetic layers, that at least one of the magnetic layers is a layer 4a having Co as a main component and containing Pt as well and containing an oxide and that at least another of the magnetic layers is a layer 4b having Co as a main component and containing Cr as well and containing no oxide.
Abstract translation: 一种磁性记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层3的非磁性基板1上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层4 1和保护层5，其特征在于，垂直磁性层4包括两个或多个磁性层，至少一个磁性层是具有Co作为主要成分并且含有Pt并且含有氧化物的层4a 并且至少另一个磁性层是具有Co作为主要成分并且含有Cr并且不含氧化物的层4b。
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公开(公告)号：US06955857B2
公开(公告)日：2005-10-18
申请号：US10032721
申请日：2001-12-27
Applicant: Yukiko Kubota , Dieter Weller , Mei-Ling Wu
Inventor： Yukiko Kubota , Dieter Weller , Mei-Ling Wu
CPC classification number: G11B5/66
Abstract: A magnetic recording medium of the perpendicular type, for a disc drive. The magnetic recording material includes a Cobalt alloy layer interspersed with a noble metal layer. The initial graded material is paramagnetic to increase to the magnetic properties of perpendicular recording media into increase the signal to noise ratio. The final recording layer has 8-20 alternating multilayer of the Cobalt alloy and a noble metal.
Abstract translation: 垂直型的磁记录介质，用于磁盘驱动器。 磁记录材料包括散布有贵金属层的钴合金层。 初始分级材料是顺磁性的，以增加垂直记录介质的磁性能，从而提高信噪比。 最终的记录层具有钴合金和贵金属的8-20交替多层。
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9.发明申请公开(公告)号：US20050214584A1
公开(公告)日：2005-09-29
申请号：US10509616
申请日：2003-03-20
Applicant: Migaku Takahashi , David Djayaprawira , Hiroki Domon , Satoru Yoshimura
Inventor： Migaku Takahashi , David Djayaprawira , Hiroki Domon , Satoru Yoshimura
Abstract: A method for producing a magnetic recording medium having a flat surface and a strong exchange bias field, and excellent in thermal stability. The method for producing a magnetic recording medium related to the present invention comprising a nonmagnetic substrate 1, a metal underlayer 2, and a ferromagnetic metal layer 3 formed successively in multilayer. The method comprises a step of forming the ferromagnetic layer 3 where ferromagnetic films 3a, 3b and one or more nonmagnetic metal spacer layer 4 are alternately formed in a multilayer and a step of allowing at least the interface of the nonmagnetic metal spacer layers 4 to physically adsorb oxygen and/or nitrogen.
Abstract translation: 一种具有平坦表面和强交换偏磁场的磁记录介质的制造方法，其热稳定性优异。 本发明涉及的磁记录介质的制造方法，其特征在于，包括依次层叠形成的非磁性基板1，金属底层2和强磁性金属层3。 该方法包括形成强磁性层3的步骤，其中铁磁膜3a，3b和一个或多个非磁性金属间隔层4在多层中交替形成，并且至少允许非磁性金属间隔层4的界面 物理吸附氧气和/或氮气。
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10.发明申请Anti-ferromagnetically coupled perpendicular magnetic recording media with oxide 有权具有氧化物的抗铁磁耦合垂直磁记录介质公开(公告)号：US20050058855A1
公开(公告)日：2005-03-17
申请号：US10977435
申请日：2004-11-01
Applicant: Erol Girt
Inventor： Erol Girt
CPC classification number: G11B5/66 , Y10T428/265
Abstract: The present invention relates to perpendicular magnetic recording media with improved signal-to-medium noise ratio (“SMNR”) and thermal stability, which media include a pair of vertically spaced-apart perpendicular ferromagnetic layers which are anti-ferromagnetically coupled (“AFC”) across a non-magnetic spacer layer. The invention is of particular utility in the fabrication of data/information storage and retrieval media, e.g., hard disks, having ultra-high areal recording/storage densities.
Abstract translation: 本发明涉及具有改进的信噪比（“SMNR”）和热稳定性的垂直磁记录介质，该介质包括一对垂直间隔开的垂直铁磁层，它们是反铁磁耦合的（“AFC” ）跨越非磁性间隔层。 本发明在具有超高面积记录/存储密度的数据/信息存储和检索介质（例如硬盘）的制造中特别有用。
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