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1. 发明申请

US20160267935A1 MAGNETIC RECORDING MEDIUM WITH MULTIPLE EXCHANGE COUPLING LAYERS AND SMALL GRAIN MAGNETIC LAYERS 有权
标题翻译：具有多个交换耦合层和小颗粒磁层的磁记录介质
公开(公告)号：US20160267935A1
公开(公告)日：2016-09-15
申请号：US14644633
申请日：2015-03-11
申请人： HGST Netherlands B.V.
发明人： Yoshihiro Ikeda
IPC分类号： G11B5/667 , G11B5/65
CPC分类号： G11B5/667 , G11B5/65 , G11B5/66
摘要： According to one embodiment, a magnetic recording medium includes: a substrate; and a magnetic recording layer structure formed above the substrate. The magnetic recording layer structure includes five or more magnetic recording layers and four or more nonmagnetic exchange coupling layers, where the magnetic recording layers and the nonmagnetic exchange coupling layers are arranged in an alternating pattern, and where the magnetic recording layers are separated from each other by least one of the nonmagnetic exchange coupling layers. The magnetic recording layer positioned closest to the substrate has each of the following: an average magnetic grain pitch of about 8.3 nm or less, a magnetic anisotropy field (Hk) value of greater than or equal to about 20 kOe, and a thickness that is about 40% of a total thickness of the magnetic recording layer structure.
摘要翻译：根据一个实施例，磁记录介质包括：基板; 以及形成在基板上方的磁记录层结构。磁记录层结构包括五个或更多个磁记录层和四个或更多个非磁性交换耦合层，其中磁记录层和非磁交换耦合层以交替图案排列，并且其中磁记录层彼此分离至少一个非磁性交换耦合层。位于最靠近基板的磁记录层具有以下各项：平均磁粒间距为约8.3nm或更小，磁各向异性场（Hk）值大于或等于约20kOe，厚度为约为磁记录层结构总厚度的40％。

2. 发明授权

US09129638B1 High performance perpendicular magnetic granular media consisting of multiple exchange control layers 有权
标题翻译：由多个交换控制层组成的高性能垂直磁性粒状介质
公开(公告)号：US09129638B1
公开(公告)日：2015-09-08
申请号：US14603258
申请日：2015-01-22
申请人： HGST Netherlands B.V.
发明人： Gunn Choe , Yoshihiro Ikeda
IPC分类号： G11B11/00 , G11B11/105 , G11B5/66 , G11B5/667
CPC分类号： G11B11/10584 , G11B5/66 , G11B5/667 , G11B5/82 , G11B11/10515
摘要： A perpendicular magnetic recording media comprises a substrate, a first magnetic oxide layer, a first exchange control layer, a second magnetic oxide layer, a second exchange control layer, and a magnetic cap layer positioned above the substrate, in this order. The first magnetic oxide layer may have an anisotropy energy (Ku) between 6×106 and 8×106 erg/cm3, and a magnetization (Ms) between 600 and 800 emu/cm3. The second magnetic oxide layer may have a Ku between 5×106 and 8×106 erg/cm3, and an Ms between 550 and 750 emu/cm3. The first exchange control layer may have an Ms between 0 and 100 emu/cm3. The second exchange control layer may have an Ms between 0 and 40 emu/cm3.
摘要翻译：垂直磁记录介质依次包括基板，第一磁性氧化物层，第一交换控制层，第二磁性氧化物层，第二交换控制层和位于基板上方的磁性盖层。第一磁性氧化物层的各向异性能（Ku）可以在6×10 6和8×10 6埃格/厘米3之间，磁化强度（Ms）在600和800emu / cm3之间。第二磁性氧化物层可以具有在5×10 6和8×10 6埃格/厘米3之间的Ku，以及550和750埃苏/厘米3之间的Ms。第一交换控制层可以具有介于0和100emu / cm 3之间的Ms。第二交换控制层可以具有0至40emu / cm 3之间的Ms。

3. 发明申请

US20140168817A1 EXCHANGE ENHANCED CAP MANUFACTURED WITH ARGON AND OXYGEN IMPLANTATION 有权
标题翻译：用阿贡和氧气植入制造的交换增强帽
公开(公告)号：US20140168817A1
公开(公告)日：2014-06-19
申请号：US13720969
申请日：2012-12-19
申请人： HGST NETHERLANDS B.V.
发明人： Gunn Choe , Yoshihiro Ikeda
IPC分类号： G11B5/62 , G11B5/84
CPC分类号： G11B5/62 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/84
摘要： A magnetic media having a novel cap layer that allows the cap layer having improved exchange coupling and reduced thickness. The cap layer is doped with a non-reactive element such as Ar, Kr, Xe, Ne or He preferably Ar. This doping reduces increases exchange coupling and reduces the dead layer, allowing the cap layer to be made thinner for reduced magnetic spacing and improved data recording performance.
摘要翻译：具有新颖的盖层的磁性介质允许盖层具有改进的交换耦合和减小的厚度。盖层掺杂有非反应性元件如Ar，Kr，Xe，Ne或He优选Ar。这种掺杂减少了交换耦合增加并且减少了死层，从而允许盖层更薄以减小磁间隔和改善的数据记录性能。

4. 发明授权

US09552837B2 Vertically and horizontally weakly coupled perpendicular small grain media 有权
标题翻译：垂直和水平弱耦合的垂直小颗粒介质
公开(公告)号：US09552837B2
公开(公告)日：2017-01-24
申请号：US14070408
申请日：2013-11-01
申请人： HGST Netherlands B.V.
发明人： Hoa V. Do , Sylvia H. Florez , Yoshihiro Ikeda , Kentaro Takano , Bruce D. Terris , Qing Zhu
IPC分类号： G11B5/66
CPC分类号： G11B5/66
摘要： In one general embodiment, a magnetic medium includes a recording layer having at least three exchange control layers each having a magnetic moment less than 100 emu/cc, and four magnetic layers separated from one another by the exchange control layers. An uppermost of the magnetic layers is doped with oxygen. In another general embodiment, a magnetic medium includes a recording layer having at least three exchange control layers and four magnetic layers separated from one another by the exchange control layers. An uppermost of the magnetic layers has an oxygen content of greater than 0.5 vol %. An average pitch of magnetic grains in a lowermost of the magnetic layers is 9 nm or less. A lowermost of the magnetic layers has an oxide content of at least 20 vol %.
摘要翻译：在一个一般实施例中，磁介质包括具有至少三个具有小于100emu / cc的磁矩的交换控制层的记录层，以及由交换控制层彼此分开的四个磁性层。最上面的磁性层被氧掺杂。在另一个一般实施例中，磁介质包括具有至少三个交换控制层的记录层和由交换控制层彼此分开的四个磁性层。最上面的磁性层的氧含量大于0.5体积％。最下面的磁性层的磁性粒子的平均间距为9nm以下。最下层的磁性层的氧化物含量至少为20体积％。

5. 发明授权

US09318140B2 Exchange enhanced cap manufactured with argon and oxygen implantation 有权
标题翻译：用氩气和氧气注入制造交换增强帽
公开(公告)号：US09318140B2
公开(公告)日：2016-04-19
申请号：US13720969
申请日：2012-12-19
申请人： HGST Netherlands B.V.
发明人： Gunn Choe , Yoshihiro Ikeda
IPC分类号： G11B5/66 , G11B5/62 , G11B5/84 , G11B5/65
CPC分类号： G11B5/62 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/84
摘要： A magnetic media having a novel cap layer that allows the cap layer having improved exchange coupling and reduced thickness. The cap layer is doped with a non-reactive element such as Ar, Kr, Xe, Ne or He preferably Ar. This doping reduces increases exchange coupling and reduces the dead layer, allowing the cap layer to be made thinner for reduced magnetic spacing and improved data recording performance.
摘要翻译：具有新颖的盖层的磁性介质允许盖层具有改进的交换耦合和减小的厚度。盖层掺杂有非反应性元件如Ar，Kr，Xe，Ne或He优选Ar。这种掺杂减少了交换耦合增加并且减少了死层，从而允许盖层更薄以减小磁间隔和改善的数据记录性能。

6. 发明申请

US20150124350A1 VERTICALLY AND HORIZONTALLY WEAKLY COUPLED PERPENDICULAR SMALL GRAIN MEDIA 有权
标题翻译：垂直和水平地微小的连接小麦粒
公开(公告)号：US20150124350A1
公开(公告)日：2015-05-07
申请号：US14070408
申请日：2013-11-01
申请人： HGST Netherlands B.V.
发明人： Hoa V. Do , Sylvia H. Florez , Yoshihiro Ikeda , Kentaro Takano , Bruce D. Terris , Qing Zhu
IPC分类号： G11B5/66
CPC分类号： G11B5/66
摘要： In one general embodiment, a magnetic medium includes a recording layer having at least three exchange control layers each having a magnetic moment less than 100 emu/cc, and four magnetic layers separated from one another by the exchange control layers. An uppermost of the magnetic layers is doped with oxygen. In another general embodiment, a magnetic medium includes a recording layer having at least three exchange control layers and four magnetic layers separated from one another by the exchange control layers. An uppermost of the magnetic layers has an oxygen content of greater than 0.5 vol %. An average pitch of magnetic grains in a lowermost of the magnetic layers is 9 nm or less. A lowermost of the magnetic layers has an oxide content of at least 20 vol %.
摘要翻译：在一个一般实施例中，磁介质包括具有至少三个具有小于100emu / cc的磁矩的交换控制层的记录层，以及由交换控制层彼此分开的四个磁性层。最上面的磁性层被氧掺杂。在另一个一般实施例中，磁介质包括具有至少三个交换控制层的记录层和由交换控制层彼此分开的四个磁性层。最上面的磁性层的氧含量大于0.5体积％。最下面的磁性层的磁性粒子的平均间距为9nm以下。最下层的磁性层的氧化物含量至少为20体积％。

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