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1. 发明授权

US06863993B1 Thin film media with a dual seed layer of RuAI/NiAIB 有权
标题翻译：具有RuAI / NiAIB双种子层的薄膜介质
公开(公告)号：US06863993B1
公开(公告)日：2005-03-08
申请号：US10676735
申请日：2003-09-30
申请人： Mary Frances Doerner , Kai Tang , Qi-Fan Xiao
发明人： Mary Frances Doerner , Kai Tang , Qi-Fan Xiao
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , H01F10/26 , H01F10/32 , G11B5/70 , H01J1/00
CPC分类号： B82Y25/00 , G11B5/656 , G11B5/66 , G11B5/732 , H01F10/26 , H01F10/324 , Y10T428/12465 , Y10T428/12861
摘要： A thin film structure for a magnetic thin film recording medium including a dual seed layer of RuAl/NiAlB is disclosed. The use of the RuAl/NiAlB structure provides reduced grain size, an increased Mrt orientation ratio (OR), increased SNR and lower PW50 at higher amplitude. The RuAl and NiAlB seed layers each have a B2 crystallographic structure. The RuAl/NiAlB dual seed layer can be used to obtain an underlayer with a preferred in-plane orientation of (200) and a cobalt alloy magnetic film with the preferred in-plane orientation of (11{overscore ( )}20).
摘要翻译：公开了一种用于包括RuAl / NiAlB的双种子层的磁性薄膜记录介质的薄膜结构。使用RuAl / NiAlB结构提供了降低的晶粒尺寸，增加的Mrt取向比（OR），增加的SNR和在较高幅度下降低PW50。 RuAl和NiAlB种子层各自具有B2晶体结构。可以使用RuAl / NiAlB双种子层来获得具有（200）的优选面内取向的底层和具有优选的面内取向的（11（超芯）（20））的钴合金磁性膜。

2. 发明授权

US06852430B2 Magnetic thin film media with a pre-seed layer of CrTi 失效
标题翻译：具有CrTi预种子层的磁性薄膜介质
公开(公告)号：US06852430B2
公开(公告)日：2005-02-08
申请号：US10059780
申请日：2002-01-29
申请人： Xiaoping Bian , Mary Frances Doerner , James A. Hagan , Tim Minvielle , Mohammad Taghi Mirzamaani , Adam Daniel Polcyn , Kai Tang
发明人： Xiaoping Bian , Mary Frances Doerner , James A. Hagan , Tim Minvielle , Mohammad Taghi Mirzamaani , Adam Daniel Polcyn , Kai Tang
IPC分类号： G11B5/73 , H01F10/30 , H01F10/32 , G11B5/66 , G11B5/70
CPC分类号： B82Y25/00 , G11B5/732 , H01F10/30 , H01F10/32 , Y10S428/90 , Y10T428/12472 , Y10T428/12681 , Y10T428/265
摘要： A thin film magnetic media structure with a pre-seed layer of CrTi is disclosed. The CrTi pre-seed layer presents an amorphous or nanocrystalline structure. The preferred seed layer is RuAl for use with the CrTi pre-seed layer. The use of the CrTi/RuAl bilayer structure provides superior adhesion to the substrate and resistance to scratching, as well as, excellent coercivity and signal-to-noise ratio (SNR) and reduced cost over the prior art. One embodiment of the invention sputter-deposits a CrTi pre-seed layer and a RuAl seed layer followed by at least one underlayer and at least one magnetic layer on a circumferentially polished substrate structure to achieve an Mrt orientation ratio greater than one. Two methods according to the invention allow the Mrt orientation ratio of the disk to be adjusted or maximized by varying the thickness of the RuAl seed layer and/or altering the atomic percentage of titanium in the pre-seed layer.
摘要翻译：公开了一种具有CrTi预种子层的薄膜磁介质结构。 CrTi预种子层呈现无定形或纳米晶体结构。优选的种子层是用于CrTi预种子层的RuAl。 CrTi / RuAl双层结构的使用提供了优异的与基板的粘附性和耐划伤性，以及优于现有技术的矫顽力和信噪比（SNR）以及降低的成本。本发明的一个实施方案溅射沉积CrTi预种子层和RuAl种子层，随后是周向抛光的衬底结构上的至少一个底层和至少一个磁性层，以实现大于1的Mrt取向比。根据本发明的两种方法允许通过改变RuAl种子层的厚度和/或改变预种子层中钛的原子百分比来调节或最大化盘的Mrt取向比。

3. 发明授权

US6077586A Laminated thin film disk for longitudinal recording 失效
标题翻译：用于纵向记录的层压薄膜盘
公开(公告)号：US6077586A
公开(公告)日：2000-06-20
申请号：US892724
申请日：1997-07-15
申请人： Xiaoping Bian , Mary Frances Doerner , Mohammad Taghi Mirzamaani
发明人： Xiaoping Bian , Mary Frances Doerner , Mohammad Taghi Mirzamaani
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/738 , G11B5/84
CPC分类号： G11B5/66 , Y10S428/90 , Y10T428/265
摘要： A thin film disk with laminated magnetic layers, for use in a disk drive, is described which exhibits a single switching behavior resulting in a smooth hysteresis loop. This is achieved by depositing a seed layer prior to depositing the Cr or Cr alloy underlayer. The seed layer material is selected to promote a [112] PO in the underlayer and subsequently a [1010] PO in the two or more laminated magnetic layers. The [1010] PO aids in maintaining minimal Hc variations between the magnetic layers. The seed layer can be a B2 type structure material such as NiAl or FeAl or any other material which results in the [112] PO in the underlayer. The underlayer is preferably Cr or a Cr alloy; the magnetic layers are preferably CoPtCr, CoPtCrTa or CoPtCrB. The spacer layer between the magnetic layers may be made from the same material as the underlayer, but may also be different, e.g. an hexagonal crystalline material such as Ru. The disks of the invention can be manufactured in standard high volume sputtering systems by virtue of the fact the magnetic layers have a reduced dependency on substrate temperature.
摘要翻译：描述了一种用于磁盘驱动器的具有层叠磁性层的薄膜盘，其具有导致平滑磁滞回线的单一切换行为。这是通过在沉积Cr或Cr合金底层之前沉积种子层来实现的。选择种子层材料以促进底层中的[112] PO和随后在两个或更多个层叠磁性层中的[10 + E，ov 1 + EE 0] PO。 [10 + E，ovs 1 + EE 0] PO有助于保持磁层之间的最小Hc变化。种子层可以是B2型结构材料，例如NiAl或FeAl，或其它材料，其导致底层中的PO。底层优选为Cr或Cr合金; 磁性层优选为CoPtCr，CoPtCrTa或CoPtCrB。磁性层之间的间隔层可以由与底层相同的材料制成，但是也可以不同。六方晶结晶材料如Ru。由于磁性层对衬底温度的依赖性降低，本发明的磁盘可以用标准的高体积溅射系统制造。

4. 发明授权

US06872478B2 Magnetic thin film media with a pre-seed layer of CrTiAl 有权
标题翻译：具有CrTiAl预种子层的磁性薄膜介质
公开(公告)号：US06872478B2
公开(公告)日：2005-03-29
申请号：US10608866
申请日：2003-06-26
申请人： Xiaoping Bian , Mary Frances Doerner , Kai Tang , Qi-Fan Xiao
发明人： Xiaoping Bian , Mary Frances Doerner , Kai Tang , Qi-Fan Xiao
IPC分类号： G11B5/738 , G11B5/73 , G11B5/84 , G11B5/66 , B32B15/00 , G11B5/70 , H01J1/00
CPC分类号： G11B5/732 , G11B5/7325 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： The applicants disclose a thin film magnetic media structure with a pre-seed layer of CrTiAl. The CrTiAl pre-seed layer presents an amorphous or nanocrystalline structure. The CrTiAl pre-seed layer improves in-plane c-axis orientation while maintaining a good orientation ratio. The pulse transition width (PW50) is narrowed and the soft error rate is improved. The preferred seed layer is RuAl.
摘要翻译：申请人公开了具有CrTiAl预种子层的薄膜磁性介质结构。 CrTiAl预种子层呈现无定形或纳米晶体结构。 CrTiAl预种子层提高面内c轴取向，同时保持良好的取向比。脉冲宽度（PW50）变窄，软错误率提高。优选的种子层是RuAl。

5. 发明授权

US06846543B2 Thin film magnetic recording disk with ruthenium-aluminum layer 失效
标题翻译：带钌铝层的薄膜磁记录盘
公开(公告)号：US06846543B2
公开(公告)日：2005-01-25
申请号：US10850735
申请日：2004-05-21
申请人： Xiaoping Bian , Mary Frances Doerner , Jinshan Li , Mohammad Taghi Mirzamaani , Kai Tang
发明人： Xiaoping Bian , Mary Frances Doerner , Jinshan Li , Mohammad Taghi Mirzamaani , Kai Tang
IPC分类号： G11B5/64 , G11B5/73 , G11B5/84 , G11B5/66 , B05D5/12 , B32B3/02 , B32B15/00 , G11B5/70
CPC分类号： G11B5/732 , G11B5/656 , G11B5/7325 , G11B5/8404 , Y10S428/90 , Y10T428/12465 , Y10T428/12861 , Y10T428/265
摘要： A magnetic thin film disk for use in a disk drive with a ruthenium-aluminum (RuAl) seed layer with B2 structure followed by a NiAl layer is described. The disk has reduced noise and increased squareness which results in improved recording performance in a disk drive utilizing the disk. The improved disk is formed by first depositing the RuAl seed layer on the substrate then the NiAl layer is deposited onto the NiAl, followed by the other layers required for a magnetic disk such as an underlayer material with a lattice parameter compatible with RuAl such as Cr-alloy, followed by a standard hcp magnetic material. The RuAl seed layer promotes a [100] preferred orientation in the underlayer which in turn promotes a [11{overscore (2)}0] preferred orientation in the magnetic layer.
摘要翻译：描述了一种用于带有B2结构的钌 - 铝（RuAl）晶种层的磁盘驱动器的磁性薄膜盘片，然后是NiAl层。磁盘具有降低的噪声和增加的矩形度，这导致利用磁盘的磁盘驱动器中的记录性能得到改善。通过首先在衬底上沉积RuAl籽晶层，然后将NiAl层沉积到NiAl上，然后沉积到具有与RuAl相容的晶格参数如Cr的磁盘所需的其它层，形成改进的盘合金，其次是标准的hcp磁性材料。 RuAl种子层促进底层中的优选取向，这进一步促进了磁性层中的[11（超（20））优选取向。

6. 发明授权

US06677052B2 Preseed layer for a magnetic recording disk 失效
标题翻译：用于磁记录盘的预置层
公开(公告)号：US06677052B2
公开(公告)日：2004-01-13
申请号：US10158377
申请日：2002-05-29
申请人： Xiaoping Bian , Mary Frances Doerner , Kai Tang , Qi-Fan Xiao
发明人： Xiaoping Bian , Mary Frances Doerner , Kai Tang , Qi-Fan Xiao
IPC分类号： G11B566
CPC分类号： G11B5/732 , Y10S428/90 , Y10S428/928 , Y10T428/12806 , Y10T428/12847
摘要： A magnetic recording disk is provided having an amorphous preseed layer of chromium, titanium, and yttrium. The use of the preseed layer improves the magnetic performance of the disk including signal to noise, inplane orientation, and readback pulsewidth.
摘要翻译：提供具有铬，钛和钇的无定形预置层的磁记录盘。使用预置层提高了磁盘的磁性能，包括信噪比，平面方向和回读脉冲宽度。

7. 发明授权

US06593009B2 Magnetic thin film media with a pre-seed layer of CrTi 失效
公开(公告)号：US06593009B2
公开(公告)日：2003-07-15
申请号：US09798235
申请日：2001-03-02
申请人： Xiaoping Bian , Mary Frances Doerner , Mohammad Taghi Mirzamaani , Tim Minvielle , Kai Tang
发明人： Xiaoping Bian , Mary Frances Doerner , Mohammad Taghi Mirzamaani , Tim Minvielle , Kai Tang
IPC分类号： G11B566
CPC分类号： B82Y25/00 , G11B5/732 , H01F10/30 , H01F10/32 , Y10S428/90 , Y10T428/12465 , Y10T428/12826 , Y10T428/12847 , Y10T428/12861 , Y10T428/265
摘要： A thin film magnetic media structure comprising a pre-seed layer CrTi is disclosed. The CrTi pre-seed layer presents an amorphous or nanocrystalline structure. The preferred seed layer is RuAl. The use of the CrTi/RuAl bilayer structure provides superior adhesion to the substrate and resistance to scratching, as well as, excellent coercivity and signal-to-noise ratio (SNR) and reduced cost over the prior art.

8. 发明授权

US06599642B2 High anisotropy alloy for thin film disk 失效
标题翻译：用于薄膜盘的高各向异性合金
公开(公告)号：US06599642B2
公开(公告)日：2003-07-29
申请号：US09758396
申请日：2001-01-09
申请人： Xiaoping Bian , Mary Frances Doerner , Tim Minvielle , Mohammad Taghi Mirzamaani , Kai Tang
发明人： Xiaoping Bian , Mary Frances Doerner , Tim Minvielle , Mohammad Taghi Mirzamaani , Kai Tang
IPC分类号： G11B565
CPC分类号： G11B5/66 , Y10T428/12465 , Y10T428/12736 , Y10T428/12743 , Y10T428/12757 , Y10T428/12861 , Y10T428/12931 , Y10T428/24967 , Y10T428/265
摘要： The thin film disk includes a pre-seed layer of amorphous or nanocrystalline structure which may be AlTi or Alta, and that is deposited upon a disk substrate. The pre-seed layer is followed by the RuAl seed layer, a Cr alloy underlayer, an onset layer composed essentially of CoCr and a magnetic layer. The magnetic layer is comprised of CoPtxCrBy, wherein x is the at. % concentration of Pt, y is the at. % concentration of boron, and x>4+y.
摘要翻译：薄膜盘包括可以是AlTi或Alta的非晶或纳米晶体结构的种子前层，并且沉积在盘基片上。预种子层之后是RuAl种子层，Cr合金底层，基本上由CoCr和磁性层组成的起始层。磁性层由CoPtxCrBy组成，其中x是at。 Pt的浓度百分比，y为at。％的硼浓度，x> 4 + y。

9. 发明授权

US06596409B2 Onset layer for thin film disk with CoPtCrB alloy 失效
标题翻译： CoPtCrB合金薄膜盘起始层
公开(公告)号：US06596409B2
公开(公告)日：2003-07-22
申请号：US09758690
申请日：2001-01-09
申请人： Xiaoping Bian , Mary Frances Doerner , Tim Minvielle , Mohammad Taghi Mirzamaani , Kai Tang
发明人： Xiaoping Bian , Mary Frances Doerner , Tim Minvielle , Mohammad Taghi Mirzamaani , Kai Tang
IPC分类号： G11B565
CPC分类号： G11B5/66 , Y10T428/12465 , Y10T428/12736 , Y10T428/12743 , Y10T428/12757 , Y10T428/12861 , Y10T428/12931 , Y10T428/24967 , Y10T428/265
摘要： The thin film disk includes a pre-seed layer of amorphous or nanocrystalline structure which may be CrTa or AlTi or AlTa, and that is deposited upon a disk substrate. The pre-seed layer is followed by the RuAl seed layer, a Cr alloy underlayer, an onset layer composed essentially of CoCr and a magnetic layer. The onset layer has an optimal concentration of 28-33 at. % Cr and an optimal thickness of 0.5 to 2.5 nm and it increases coercivity and improves the Signal-to-Noise Ratio (SNR) of the disk.
摘要翻译：薄膜盘包括可以是CrTa或AlTi或AlTa并且沉积在盘基底上的非晶态或纳米晶体结构的种子前层。预种子层之后是RuAl种子层，Cr合金底层，基本上由CoCr和磁性层组成的起始层。起始层的最佳浓度为28-33。％Cr，最佳厚度为0.5〜2.5nm，提高了矫顽力，提高了磁盘的信噪比（SNR）。

10. 发明授权

US06567236B1 Antiferromagnetically coupled thin films for magnetic recording 失效
标题翻译：用于磁记录的反铁磁耦合薄膜
公开(公告)号：US06567236B1
公开(公告)日：2003-05-20
申请号：US10010785
申请日：2001-11-09
申请人： Mary Frances Doerner , Eric E. Fullerton , David T. Margulies , Kai Tang
发明人： Mary Frances Doerner , Eric E. Fullerton , David T. Margulies , Kai Tang
IPC分类号： G11B566
CPC分类号： B82Y25/00 , G11B5/012 , G11B5/66 , G11B5/732 , G11B5/7325 , G11B2005/001 , H01F10/3218 , H01F10/3295 , Y10S428/90 , Y10T428/1107 , Y10T428/12465 , Y10T428/12847 , Y10T428/12861 , Y10T428/24942 , Y10T428/24975
摘要： An antiferromagnetically coupled layer structure for magnetic recording wherein the top ferromagnetic structure is a bilayer structure including a relatively thin first sublayer of ferromagnetic material in contact with the coupling/spacer layer. The first sublayer has a higher magnetic moment than the second sublayer. The layer structure of the invention results improved manufacturability and improved performance. A preferred embodiment of a layer structure according to the invention includes: a bottom ferromagnetic layer preferably of CoCr; an antiferromagnetic coupling/spacer layer preferably of Ru; and a top ferromagnetic structure including a thin first sublayer of material preferably of CoCr, CoCrB or CoPtCrB, and a thicker second sublayer of material preferably of CoPtCrB with a lower moment than the first sublayer.
摘要翻译：一种用于磁记录的反铁磁耦合层结构，其中顶部铁磁结构是包括与耦合/间隔层接触的铁磁材料的相对薄的第一子层的双层结构。第一子层具有比第二子层更高的磁矩。本发明的层结构提高了可制造性和改进的性能。根据本发明的层结构的优选实施例包括：优选CoCr的底部铁磁层; 优选Ru的反铁磁耦合/间隔层; 以及包括优选CoCr，CoCrB或CoPtCrB的材料的薄的第一子层以及具有比第一子层更低的力矩的较厚的CoPtCrB材料的较厚的第二子层的顶部铁磁结构。

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