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1. 发明授权

US06858331B1 Magnetic thin film media with a bi-layer structure of CrTi/Nip 有权
标题翻译：具有CrTi / Nip双层结构的磁性薄膜介质
公开(公告)号：US06858331B1
公开(公告)日：2005-02-22
申请号：US10651634
申请日：2003-08-29
申请人： Xiaoping Bian , Mary Frances Doerner , Mohammad S. Mirzamaani , Adam Polcyn , Qi-Fan Xiao
发明人： Xiaoping Bian , Mary Frances Doerner , Mohammad S. Mirzamaani , Adam Polcyn , Qi-Fan Xiao
IPC分类号： G11B5/738 , G11B5/65 , G11B5/73 , G11B5/85 , G11B5/851 , G11B5/66 , B05D5/12 , G11B5/70 , H01J1/00
CPC分类号： G11B5/7325 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/12861 , Y10T428/12986
摘要： A thin film magnetic media structure with a bi-layer structure of amorphous chromium titanium (CrTi) followed by an amorphous layer of nickel phosphorus (NiP) is disclosed. After the NiP has been deposited it is exposed to oxygen to form an oxidized surface. Preferably the underlayer is deposited directly onto the oxidized NiP surface. The bi-layer structure of CrTi/NiP promotes excellent in-plane crystallographic orientation in the cobalt alloy magnetic layer(s) and allows an ultra-thin chromium underlayer to be used which provides better control over grain size and distribution. When the CrTi/NiP bi-layer structure is combined with a circumferentially textured substrate, preferably glass, a high Mrt orientation ratio (OR) results.
摘要翻译：公开了一种具有非晶态铬钛（CrTi）双层结构，随后是镍磷（NiP）非晶层的薄膜磁介质结构。 NiP沉积后，暴露于氧气以形成氧化表面。优选地，底层直接沉积在氧化的NiP表面上。 CrTi / NiP的双层结构促进钴合金磁性层中的优异的面内晶体取向，并且允许使用超薄铬底层，其提供对晶粒尺寸和分布的更好控制。当CrTi / NiP双层结构与周向织构化的基底（优选玻璃）组合时，得到高的Mrt取向比（OR）。

2. 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。

3. 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。

4. 发明授权

US07419730B2 Magnetic recording disk with antiferromagnetically coupled master layer including copper 失效
标题翻译：具有反铁磁耦合主磁层（包括铜）的磁记录盘
公开(公告)号：US07419730B2
公开(公告)日：2008-09-02
申请号：US10931642
申请日：2004-08-31
申请人： Xiaoping Bian , Mary Frances Doerner , Tetsuya Kanbe , Mark Mercado , Mohammad Mirzamaani , Adam Polcyn , Kai Tang
发明人： Xiaoping Bian , Mary Frances Doerner , Tetsuya Kanbe , Mark Mercado , Mohammad Mirzamaani , Adam Polcyn , Kai Tang
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/656 , G11B5/66 , G11B5/7325
摘要： An antiferromagnetically coupled (AFC) magnetic recording medium with an AFC master layer comprising at least two magnetic layers with the top magnetic layer including copper is described. The slave layer is separated from the master layer structure by a nonmagnetic spacer layer selected to antiferromagnetically couple the layers. The master layer structure according to the invention includes a bottom and top layer of distinct ferromagnetic materials. Preferably, the top layer of the master layer is a cobalt alloy including from 1 to 5 at. % copper with an example being CoPt13Cr20B8Cu2. The AFC magnetic layer structure can be used with a variety of substrates including circumferentially textured glass and NiP/AlMg.
摘要翻译：描述了具有包括至少两个具有顶部磁性层包括铜的磁性层的AFC主层的反铁磁耦合（AFC）磁记录介质。通过选择用于反铁磁耦合层的非磁性间隔层将从属层与主层结构分离。根据本发明的主层结构包括不同铁磁材料的底层和顶层。优选地，主层的顶层是包括1至5个的钴合金。％铜，例如CoPt 13 C 20 20 B 2 Cu 2。 AFC磁性层结构可以与各种基材一起使用，包括圆周纹理玻璃和NiP / AlMg。

5. 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。

6. 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。

7. 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。

8. 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。

9. 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.

10. 发明授权

US06572989B2 Thin film magnetic recording disk with a chromium-nickel pre-seed layer 失效
标题翻译：具有铬镍预种子层的薄膜磁记录盘
公开(公告)号：US06572989B2
公开(公告)日：2003-06-03
申请号：US09876571
申请日：2001-06-06
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： G11B566
CPC分类号： G11B5/732 , G11B5/66 , G11B5/7325 , Y10S428/90 , Y10T428/12465 , Y10T428/12847 , Y10T428/12854 , Y10T428/12944 , Y10T428/24975 , Y10T428/265
摘要： In a thin film magnetic disk, a crystalline CrNi pre-seed layer is sputtered onto a substrate such as glass, followed by a RuAl seed layer. The CrNi pre-seed layer reduces grain size and its distribution, and improves in-plane crystallographic orientation, coercivity (Hc) and SNR. In a preferred embodiment the RuAl seed layer is followed by a Cr alloy underlayer. In a preferred embodiment the Cr alloy underlayer is followed by an onset layer and a magnetic layer, or by two or more magnetic layers antiferromagnetically coupled through one or more spacer layers. The crystalline CrNi pre-seed layer allows use of a thinner RuAl seed layer which results in smaller overall grain size, as well as a reduction in manufacturing cost due to relatively high cost of ruthenium. The CrNi pre-seed layer also allows use of a thinner Cr alloy underlayer which also contributes to reduce overall grain size.
摘要翻译：在薄膜磁盘中，将结晶CrNi预种子层溅射到诸如玻璃的衬底上，随后是RuAl种子层。 CrNi预种子层减小晶粒尺寸及其分布，并提高晶面取向，矫顽力（Hc）和信噪比。在优选的实施方案中，RuAl种子层之后是Cr合金底层。在优选的实施方案中，Cr合金底层之后是起始层和磁性层，或者由两个或更多个通过一个或多个间隔层反铁磁耦合的磁性层。结晶CrNi预种子层允许使用更薄的RuAl种子层，其导致更小的总体晶粒尺寸，以及由于钌的相对高的成本而导致的制造成本的降低。 CrNi预种子层还允许使用更薄的Cr合金底层，这也有助于减小总体晶粒尺寸。

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