公开(公告)号：US20050100664A1

公开(公告)日：2005-05-12

申请号：US10704593

申请日：2003-11-12

申请人： Chung-Hee Chang ,  Xiaoding Ma ,  Michael Stirniman ,  Jeffrey Reiter ,  Samuel Harkness ,  Rajiv Ranjan

发明人： Chung-Hee Chang ,  Xiaoding Ma ,  Michael Stirniman ,  Jeffrey Reiter ,  Samuel Harkness ,  Rajiv Ranjan

IPC分类号： B29C59/14 ,  G11B5/84 ,  B05D5/12 ,  B29C71/02

CPC分类号： G11B5/84 ,  B29C59/14 ,  B29L2007/007 ,  B29L2017/008

摘要： A method of manufacturing magnetic recording media, comprising sequential steps of: (a) providing an apparatus for manufacturing the media; (b) supplying the apparatus with at least one substrate for the media; (c) forming a magnetic recording layer on the at least one substrate in a first portion of the apparatus, the magnetic recording layer including a surface; (d) treating the surface of the magnetic recording layer with an ionized oxygen-containing plasma in a second portion of the apparatus to form a plasma oxidized surface layer; and (e) forming a protective overcoat layer on the plasma oxidized surface layer of the magnetic recording layer in a third portion of the apparatus.

摘要翻译： 一种制造磁记录介质的方法，包括以下步骤：（a）提供用于制造介质的装置; （b）向所述设备供应用于所述介质的至少一个基板; （c）在所述装置的第一部分中的所述至少一个基板上形成磁记录层，所述磁记录层包括表面; （d）在设备的第二部分中用离子化的含氧等离子体处理磁记录层的表面以形成等离子体氧化表面层; 和（e）在设备的第三部分中在磁记录层的等离子体氧化表面层上形成保护性外涂层。

公开(公告)号：US20070087227A1

公开(公告)日：2007-04-19

申请号：US11249469

申请日：2005-10-14

申请人： Xiaoding Ma ,  Tom Nolan ,  Raj Thangaraj ,  Michael Stirniman ,  Samuel Harkness ,  Huan Tang ,  Jing Gui ,  Joel Weiss ,  Gary Rauch

发明人： Xiaoding Ma ,  Tom Nolan ,  Raj Thangaraj ,  Michael Stirniman ,  Samuel Harkness ,  Huan Tang ,  Jing Gui ,  Joel Weiss ,  Gary Rauch

IPC分类号： G11B5/65 ,  C23C14/00

CPC分类号： G11B5/8408 ,  G11B5/65 ,  G11B5/851

摘要： A granular magnetic recording medium comprises a non-magnetic substrate having a surface, a layer stack on the substrate surface, including an outermost granular magnetic recording layer, a cap layer on the granular magnetic recording layer, having a sputter-etched outer surface, and a protective overcoat layer on the sputter-etched outer surface of the cap layer.

摘要翻译： 粒状磁记录介质包括具有表面的非磁性基底，在基底表面上的层叠，包括最外层的粒状磁记录层，粒状磁记录层上的盖层，具有溅射蚀刻的外表面，以及 覆盖层的溅射蚀刻外表面上的保护性外涂层。

公开(公告)号：US20050202286A1

公开(公告)日：2005-09-15

申请号：US10797111

申请日：2004-03-11

申请人： Qixu Chen ,  Chung-Hee Chang ,  Li-Lien Lee ,  Samuel Harkness

发明人： Qixu Chen ,  Chung-Hee Chang ,  Li-Lien Lee ,  Samuel Harkness

IPC分类号： G11B5/64 ,  G11B5/72 ,  G11B5/73

CPC分类号： G11B5/732 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325

摘要： A magnetic recording medium, the order of layers in which is the substrate, the soft underlayer, the seedlayer, the 1st RuCrx-containing interlayer, the 2nd RuCrx-containing interlayer and the magnetic recording layer with preferably a oxides or nitrides-containing magnetic layer comprising grains, is disclosed. High-chromium ruthenium-chromium alloy used as inter layers significantly enhances coercivity and SMNR preferably due to the improved lattice match between RuCr inter layers and CoPt-based magnetic recording layers, and the surface energy of RuCr layers contributes to the performance improvement with the high-chromium addition into Ru inter layers.

摘要翻译： 磁记录介质，层的顺序为衬底，软底层，种子层，含有CrCrNi x的中间层，2层， 并且具有优选含有包含晶粒的含氧化物或含氮化物的磁性层的磁记录层被公开。 用作层间的高铬钌 - 铬合金显着提高了矫顽力和SMNR，这主要是由于RuCr层间和CoPt基磁记录层之间的晶格匹配得到改善，RuCr层的表面能有助于提高性能 - 铬添加到Ru层间。

公开(公告)号：US20050095421A1

公开(公告)日：2005-05-05

申请号：US10698385

申请日：2003-11-03

申请人： Zhong Wu ,  Thomas Nolan ,  Samuel Harkness ,  Rajiv Ranjan

发明人： Zhong Wu ,  Thomas Nolan ,  Samuel Harkness ,  Rajiv Ranjan

IPC分类号： G11B5/65 ,  G11B5/64 ,  G11B5/66 ,  G11B5/738 ,  G11B5/851 ,  G11B5/708 ,  C23C14/10

CPC分类号： G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/851 ,  Y10T428/259

摘要： A magnetic recording medium having a substrate and a SiO2-containing magnetic layer comprising grains is disclosed. The magnetic layer has substantial SiO2 between the grains. This condition is achieved by sputter depositing the magnetic layer in a chamber containing a gas under vacuum. The gas contains substantially no oxygen. Such a gas is one into which no oxygen is intentionally introduced to create an oxygen-containing gas mixture but may contain a trace amount of oxygen molecules in an amount that are present in air under a similar vacuum as that of the gas in the chamber.

摘要翻译： 公开了一种具有基片和包含晶粒的含SiO 2磁性层的磁记录介质。 磁性层在晶粒之间具有相当大的SiO 2。 该条件通过在包含真空气体的室中溅射沉积磁性层来实现。 气体基本上不含氧气。 这种气体是没有有意地引入氧以产生含氧气体混合物的气体，但是可能含有微量氧气分子的量在与空气中的气体类似的真空下存在于空气中。

公开(公告)号：US20060051623A1

公开(公告)日：2006-03-09

申请号：US11247251

申请日：2005-10-12

申请人： Stella Wu ,  Thomas Nolan ,  Samuel Harkness ,  Rajiv Ranjan

发明人： Stella Wu ,  Thomas Nolan ,  Samuel Harkness ,  Rajiv Ranjan

IPC分类号： G11B5/65 ,  C23C14/00

CPC分类号： G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/851 ,  Y10T428/259

摘要： A magnetic recording medium having a substrate and a SiO2-containing magnetic layer comprising grains is disclosed. The magnetic layer has substantial SiO2 between the grains. This condition is achieved by sputter depositing the magnetic layer in a chamber containing a gas under vacuum. The gas contains substantially no oxygen. Such a gas is one into which no oxygen is intentionally introduced to create an oxygen-containing gas mixture but may contain a trace amount of oxygen molecules in an amount that are present in air under a similar vacuum as that of the gas in the chamber.

摘要翻译： 公开了一种具有基片和包含晶粒的含SiO 2磁性层的磁记录介质。 磁性层在晶粒之间具有相当大的SiO 2。 该条件通过在包含真空气体的室中溅射沉积磁性层来实现。 气体基本上不含氧气。 这种气体是没有有意地引入氧以产生含氧气体混合物的气体，但是可能含有微量氧气分子的量在与空气中的气体类似的真空下存在于空气中。

公开(公告)号：US20060275628A1

公开(公告)日：2006-12-07

申请号：US11145938

申请日：2005-06-07

申请人： Qixu Chen ,  Charles Brucker ,  Chung-Hee Chang ,  Tom Nolan ,  Samuel Harkness

发明人： Qixu Chen ,  Charles Brucker ,  Chung-Hee Chang ,  Tom Nolan ,  Samuel Harkness

IPC分类号： G11B5/66

CPC分类号： G11B5/667

摘要： A recording medium having a substrate, a first soft magnetic underlayer, a second soft magnetic underlayer and a perpendicular magnetic recording layer without a spacer layer between the first and second soft magnetic underlayers is disclosed.

公开(公告)号：US20060139799A1

公开(公告)日：2006-06-29

申请号：US11022810

申请日：2004-12-28

申请人： Zhong Wu ,  Samuel Harkness ,  Hans Richter ,  Alexander Dobin

发明人： Zhong Wu ,  Samuel Harkness ,  Hans Richter ,  Alexander Dobin

IPC分类号： G11B5/17

CPC分类号： G11B5/66 ,  G11B5/1278 ,  G11B5/65

摘要： A granular perpendicular magnetic recording medium comprises a non-magnetic substrate and a granular perpendicular magnetic recording layer overlying the substrate, comprising a first granular perpendicular magnetic layer proximal the substrate and having a first saturation magnetization (Ms)1, and a second granular perpendicular magnetic layer distal the substrate and having a second, different saturation magnetization (Ms)2. Also disclosed is a method of fabricating the granular perpendicular magnetic recording medium.

摘要翻译： 颗粒状垂直磁记录介质包括非磁性衬底和覆盖衬底的粒状垂直磁记录层，包括靠近衬底的第一颗粒垂直磁性层，并具有第一饱和磁化强度（M S） 和第二颗粒垂直磁性层，远离衬底并具有第二不同的饱和磁化强度（M 2 S 2）2。 还公开了一种制造颗粒状垂直磁记录介质的方法。

公开(公告)号：US20070237986A1

公开(公告)日：2007-10-11

申请号：US11399507

申请日：2006-04-07

申请人： Zhong (Stella) Wu ,  Samuel Harkness ,  Erol Girt ,  Qixu Chen ,  Thomas Nolan

发明人： Zhong (Stella) Wu ,  Samuel Harkness ,  Erol Girt ,  Qixu Chen ,  Thomas Nolan

IPC分类号： G11B5/66

CPC分类号： G11B5/7325 ,  G11B5/64 ,  G11B5/656

摘要： A perpendicular magnetic recording medium comprises a non-magnetic substrate having a planar surface and a stack of thin film layers overlying the substrate surface and including at least one perpendicular magnetic recording layer with a magnetic easy axis perpendicular to the plane of the layer stack, wherein a magnetically soft underlayer (“SUL”) is not present in the layer stack. The layer stack includes a first, amorphous and smooth-surfaced underlayer proximal the substrate surface, a second underlayer having a first crystallographic orientation overlying the first underlayer, a third underlayer having a second crystallographic orientation overlying the second underlayer, and at least one perpendicular magnetic recording layer having a crystallographic orientation similar to the second crystallographic orientation overlying the third underlayer.

摘要翻译： 垂直磁记录介质包括具有平坦表面的非磁性衬底和覆盖在衬底表面上的薄膜层堆叠，并且包括具有垂直于层堆叠平面的易磁化轴的至少一个垂直磁记录层，其中 层叠层中不存在磁软底层（“SUL”）。 所述层堆叠包括靠近所述衬底表面的第一非晶体和平滑表面的底层，具有覆盖所述第一底层的第一晶体取向的第二底层，具有覆盖所述第二底层的第二晶体取向的第三底层和至少一个垂直磁 记录层具有类似于覆盖第三底层的第二结晶取向的晶体取向。

公开(公告)号：US20060024432A1

公开(公告)日：2006-02-02

申请号：US10902956

申请日：2004-08-02

申请人： Thomas Nolan ,  Samuel Harkness

发明人： Thomas Nolan ,  Samuel Harkness

IPC分类号： B05D5/12 ,  G11B5/66

CPC分类号： G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/732

摘要： A magnetic recording medium with tuned exchange coupling comprises: (a) a non-magnetic substrate having a surface; and (b) a stack of thin film layers on the substrate surface, including: (i) a compositionally segregated, exchange decoupled magnetic layer with substantially non-magnetic grain boundaries; and (ii) an exchange coupled magnetic layer adjacent to and in direct contact with the exchange decoupled magnetic layer.

摘要翻译： 具有调谐交换耦合的磁记录介质包括：（a）具有表面的非磁性基底; 和（b）衬底表面上的一叠薄膜层，包括：（i）具有基本上非磁性晶界的成分分离的交换去耦磁性层; 和（ii）与交换去耦磁性层相邻并直接接触的交换耦合磁性层。

公开(公告)号：US20060146445A1

公开(公告)日：2006-07-06

申请号：US11028224

申请日：2005-01-04

申请人： Thomas Nolan ,  Samuel Harkness ,  Chunghee Chang ,  Jianping Chen

发明人： Thomas Nolan ,  Samuel Harkness ,  Chunghee Chang ,  Jianping Chen

IPC分类号： G11B5/66 ,  G11B5/82

CPC分类号： G11B5/1278 ,  G11B5/667 ,  G11B5/82 ,  G11B2005/0029

摘要： A perpendicular magnetic recording medium adapted for use with a single-pole magnetic transducer head comprises a non-magnetic substrate having a surface, and a layer stack formed over the substrate surface, comprising, in overlying sequence from the substrate surface: (i) a magnetically soft underlayer (SUL) having a magnetic saturation value Ms and a thickness t; (ii) at least one non-magnetic interlayer; and (iii) at least one magnetically hard perpendicular recording layer; wherein the product Mst of the SUL is selected to have a minimum value which provides a desired amount of head field channeling but is sufficiently large to provide a desired reduction of erasure of written bits.

摘要翻译： 适于与单极磁换能器头一起使用的垂直磁记录介质包括具有表面的非磁性衬底和形成在衬底表面上的层叠层，其以衬底表面的顺序包括：（i） 磁性软底层（SUL）具有磁饱和值M S和厚度t; （ii）至少一个非磁性中间层; 和（iii）至少一个磁性硬的垂直记录层; 其中SUL的乘积M t被选择为具有提供期望量的磁头场通道的最小值，但是足够大以提供写入位的擦除的期望的减少。