公开(公告)号：US20060093866A1

公开(公告)日：2006-05-04

申请号：US10976557

申请日：2004-10-29

申请人： Xiaoping Bian ,  Jack Chang ,  Ernesto Marinero ,  Mohammad Mirzamaani

发明人： Xiaoping Bian ,  Jack Chang ,  Ernesto Marinero ,  Mohammad Mirzamaani

IPC分类号： G11B5/66

CPC分类号： G11B5/7325 ,  G11B5/66

摘要： A thin film disk for use in magnetic recording with an underlayer structure that includes a layer of CrMoZr, CrMoNb or CrMoMn is described. The preferred embodiment includes a circumferentially textured glass substrate, a pre-seed layer, a B2 seed layer, an underlayer structure and a magnetic layer stack with a plurality of layers. The preferred underlayer structure has a first underlayer of CrTi followed by a second underlayer of CrMoZr. The preferred B2 seed layer material is RuAl. The preferred pre-seed layer is CrTiAl. The preferred magnetic layer stack is CoCr/CoPtCrB/CoPtCrBCu. The preferred embodiment is useful for longitudinal magnetic recording. The in-plane crystallographic orientation, the Mrt orientation ratio and the media SNR are improved by the inclusion of the CrMoZr, CrMoNb or CrMoMn according to the invention.

摘要翻译： 描述了用于具有包括CrMoZr，CrMoNb或CrMoMn层的底层结构的磁记录的薄膜盘。 优选实施例包括周向纹理化的玻璃基板，预种子层，B2种子层，下层结构和具有多个层的磁性层堆叠。 优选的底层结构具有CrTi的第一底层，之后是CrMoZr的第二底层。 优选的B2种子层材料是RuAl。 优选的种子前层是CrTiAl。 优选的磁性层堆叠是CoCr / CoPtCrB / CoPtCrBCu。 优选实施例对于纵向磁记录是有用的。 通过包括根据本发明的CrMoZr，CrMoNb或CrMoMn，提高了面内晶体取向，Mrt取向比和介质SNR。

公开(公告)号：US20050048328A1

公开(公告)日：2005-03-03

申请号：US10651634

申请日：2003-08-29

申请人： Xiaoping Bian ,  Mary Doerner ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Qi-Fan Xiao

发明人： Xiaoping Bian ,  Mary Doerner ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Qi-Fan Xiao

IPC分类号： G11B5/738 ,  G11B5/65 ,  G11B5/73 ,  G11B5/85 ,  G11B5/851 ,  B32B3/02 ,  G11B5/64

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）。

公开(公告)号：US06174582B1

公开(公告)日：2001-01-16

申请号：US09020151

申请日：1998-02-06

申请人： Xiaoping Bian ,  Shanlin Duan ,  Jinshan Li ,  Mohammad Mirzamaani

发明人： Xiaoping Bian ,  Shanlin Duan ,  Jinshan Li ,  Mohammad Mirzamaani

IPC分类号： G11B566

CPC分类号： G11B5/732 ,  G11B5/7325 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/265

摘要： A method of fabricating a thin film magnetic disk including depositing a seed layer of a refractory metal such as tantalum, Cr, Nb, W, V, or Mo and a reactive element such as N or O; depositing a nonmagnetic underlayer onto the seed layer; and depositing a magnetic layer is disclosed. Also disclosed is a thin film magnetic disk having a substrate; a seed layer comprising tantalum and at least about 1 atomic-% of nitrogen or oxygen; an underlayer comprising Cr or an alloy of chromium deposited onto the seed layer, the underlayer preferably having a preferred orientation of [200]; and a magnetic layer deposited onto the underlayer, the magnetic layer preferably having a preferred orientation of [11{overscore (2)}0]. Also disclosed is a disk drive using the thin film magnetic disk of the invention.

摘要翻译： 一种制造薄膜磁盘的方法，包括沉积诸如钽，Cr，Nb，W，V或Mo的难熔金属种子层和诸如N或O的反应性元件; 将非磁性底层沉积到种子层上; 并且公开了沉积磁性层。 还公开了具有基板的薄膜磁盘; 包含钽和至少约1原子％的氮或氧的种子层; 包含Cr或沉积在种子层上的铬的合金的底层，底层优选具有[200]的优选取向; 和沉积在底层上的磁性层，磁性层优选地具有优选取向为[11（超芯（2）} 0]。 还公开了使用本发明的薄膜磁盘的磁盘驱动器。

公开(公告)号：US07300713B2

公开(公告)日：2007-11-27

申请号：US10976557

申请日：2004-10-29

申请人： Xiaoping Bian ,  Jack Chang ,  Ernesto E. Marinero ,  Mohammad Mirzamaani

发明人： Xiaoping Bian ,  Jack Chang ,  Ernesto E. Marinero ,  Mohammad Mirzamaani

IPC分类号： G11B5/66 ,  G11B5/70

CPC分类号： G11B5/7325 ,  G11B5/66

摘要： A thin film disk for use in magnetic recording with an underlayer structure that includes a layer of CrMoZr, CrMoNb or CrMoMn is described. The preferred embodiment includes a circumferentially textured glass substrate, a pre-seed layer, a B2 seed layer, an underlayer structure and a magnetic layer stack with a plurality of layers. The preferred underlayer structure has a first underlayer of CrTi followed by a second underlayer of CrMoZr. The preferred B2 seed layer material is RuAl. The preferred pre-seed layer is CrTiAl. The preferred magnetic layer stack is CoCr/CoPtCrB/CoPtCrBCu. The preferred embodiment is useful for longitudinal magnetic recording. The in-plane crystallographic orientation, the Mrt orientation ratio and the media SNR are improved by the inclusion of the CrMoZr, CrMoNb or CrMoMn according to the invention.

摘要翻译： 描述了用于具有包括CrMoZr，CrMoNb或CrMoMn层的底层结构的磁记录的薄膜盘。 优选实施例包括周向纹理化的玻璃基板，预种子层，B2种子层，下层结构和具有多个层的磁性层堆叠。 优选的底层结构具有CrTi的第一底层，之后是CrMoZr的第二底层。 优选的B2种子层材料是RuAl。 优选的种子前层是CrTiAl。 优选的磁性层堆叠是CoCr / CoPtCrB / CoPtCrBCu。 优选实施例对于纵向磁记录是有用的。 通过包括根据本发明的CrMoZr，CrMoNb或CrMoMn，提高了面内晶体取向，Mrt取向比和介质SNR。

公开(公告)号：US20060046102A1

公开(公告)日：2006-03-02

申请号：US10931642

申请日：2004-08-31

申请人： Xiaoping Bian ,  Mary Doerner ,  Tetsuya Kanbe ,  Mark Mercado ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

发明人： Xiaoping Bian ,  Mary 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。

公开(公告)号：US20050031909A1

公开(公告)日：2005-02-10

申请号：US10903064

申请日：2004-07-29

申请人： Xiaoping Bian ,  Mary Doerner ,  James Hagan ,  Tim Minvielle ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

发明人： Xiaoping Bian ,  Mary Doerner ,  James Hagan ,  Tim Minvielle ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

IPC分类号： G11B5/73 ,  H01F10/30 ,  H01F10/32 ,  G11B5/64 ,  B32B3/24 ,  B32B15/01

CPC分类号： B82Y25/00 ,  G11B5/7379 ,  H01F10/30 ,  H01F10/32 ,  Y10S428/90 ,  Y10T428/12472 ,  Y10T428/12681 ,  Y10T428/265

摘要： The applicants disclose a thin film magnetic media structure with a pre-seed layer of CrTi. 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 an 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： 申请人公开了具有CrTi预种子层的薄膜磁性介质结构。 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，接着是底层和在周向抛光的衬底结构上的至少一个磁性层，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。

公开(公告)号：US20090190267A1

公开(公告)日：2009-07-30

申请号：US12020235

申请日：2008-01-25

申请人： Xiaoping Bian ,  Mary Minardi ,  Kai Tang

发明人： Xiaoping Bian ,  Mary Minardi ,  Kai Tang

IPC分类号： G11B5/33

CPC分类号： G11B5/82 ,  G11B5/667 ,  G11B5/7379

摘要： A method for reducing thin film media layer thickness while maintaining adequate magnetic recording performance includes providing a substrate comprising a rigid support structure, depositing a soft underlayer on top of the substrate, depositing an interlayer on top of the soft underlayer and depositing a exchange break layer on top of the interlayer, wherein the exchange break layer comprises a flash layer of RuTi and a seed layer of Ru. The flash layer is deposited in place of a pure Ru layer, thereby reducing the amount of Ru deposited as well as decreasing the thickness of the overall intermediate layer. The magnetic performance of the media is maintained with the substitution of a RuTi flash layer for a pure Ru layer.

摘要翻译： 一种在保持足够的磁记录性能的同时降低薄膜介质层厚度的方法包括提供包括刚性支撑结构的基底，在基底的顶部上沉积软底层，在软底层顶部沉积中间层并沉积交换断裂层 在中间层的顶部，其中交换破坏层包括RuTi的闪蒸层和Ru的种子层。 沉积闪蒸层代替纯Ru层，从而减少沉积的Ru的量以及减小整个中间层的厚度。 通过用RuTi闪蒸层代替纯Ru层来保持介质的磁性能。

公开(公告)号：US07638210B2

公开(公告)日：2009-12-29

申请号：US11735710

申请日：2007-04-16

申请人： Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

发明人： Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  G11B5/65 ,  Y10T428/24942

摘要： A perpendicular magnetic recording medium has an “exchange-spring” type magnetic recording layer (RL) with an improved coupling layer (CL). The RL includes the first or lower ferromagnetic layer MAG1, sometimes called the “media” layer, the second or upper ferromagnetic layer MAG2, sometimes called the “exchange-spring” layer, and the intermediate CL that provides ferromagnetic exchange coupling between MAG1 and MAG2. The CL is formed of NiCr or RuCr based alloys, or CoCr or CoCrB alloys with high Cr and/or B content (Cr plus B>about 25 atomic percent), or RuCoCr alloys with low Co content (

摘要翻译： 垂直磁记录介质具有具有改进的耦合层（CL）的“交换弹簧”型磁记录层（RL）。 RL包括第一或下铁磁层MAG1，有时称为“介质”层，第二或上铁磁层MAG2，有时称为“交换弹簧”层，以及在MAG1和MAG2之间提供铁磁交换耦合的中间CL 。 CL由NiCr或RuCr基合金或具有高Cr和/或B含量（Cr + B> 25原子％）的CoCr或CoCrB合金或低Co含量（<约65原子％）的RuCoCr合金形成。 对于每个CL组合物，存在提供MAG1和MAG2之间的最佳层间交换耦合的CL厚度范围。 选择的CL材料提供具有良好磁性能的交换型垂直磁记录介质，而较高量的CL提高了介质的耐腐蚀性。

公开(公告)号：US20080254324A1

公开(公告)日：2008-10-16

申请号：US11735710

申请日：2007-04-16

申请人： Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

发明人： Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  G11B5/65 ,  Y10T428/24942

摘要： A perpendicular magnetic recording medium has an “exchange-spring” type magnetic recording layer (RL) with an improved coupling layer (CL). The RL includes the first or lower ferromagnetic layer MAG1, sometimes called the “media” layer, the second or upper ferromagnetic layer MAG2, sometimes called the “exchange-spring” layer, and the intermediate CL that provides ferromagnetic exchange coupling between MAG1 and MAG2. The CL is formed of NiCr or RuCr based alloys, or CoCr or CoCrB alloys with high Cr and/or B content (Cr plus B>about 25 atomic percent), or RuCoCr alloys with low Co content (

摘要翻译： 垂直磁记录介质具有具有改进的耦合层（CL）的“交换弹簧”型磁记录层（RL）。 RL包括第一或下铁磁层MAG1，有时称为“介质”层，第二或上铁磁层MAG 2，有时称为“交换弹簧”层，以及在MAG之间提供铁磁交换耦合的中间CL 1和MAG 2。 CL由NiCr或RuCr基合金或具有高Cr和/或B含量（Cr + B> 25原子％）的CoCr或CoCrB合金或低Co含量（<约65原子％）的RuCoCr合金形成。 对于每个CL组合物，存在提供MAG1和MAG2之间的最佳层间交换耦合的CL厚度范围。 选择的CL材料提供具有良好磁性能的交换型垂直磁记录介质，而较高量的CL提高了介质的耐腐蚀性。

公开(公告)号：US20120012554A1

公开(公告)日：2012-01-19

申请号：US12836823

申请日：2010-07-15

申请人： Xiaoping Bian ,  Qing Dai ,  Dan S. Kercher ,  Mark F. Mercado ,  Qi-fan Xiao ,  Jane J. Zhang

发明人： Xiaoping Bian ,  Qing Dai ,  Dan S. Kercher ,  Mark F. Mercado ,  Qi-fan Xiao ,  Jane J. Zhang

IPC分类号： C23C14/34

CPC分类号： G11B5/8408

摘要： A method of fabricating media comprises forming recording media on a substrate. An overcoat is deposited on the recording media opposite the substrate. The overcoat has a first surface finish. The overcoat is etched to remove material and provide the overcoat with a second surface finish that is smoother than the first surface finish. The depositing and etching may occur sequentially in an in-situ, dry vacuum process. The second surface finish may not be mechanically processed after etching to further planarize the overcoat.