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11. 发明授权

US07169488B2 Granular perpendicular media with surface treatment for improved magnetic properties and corrosion resistance 有权
标题翻译：具有表面处理的颗粒垂直介质，用于改善磁性能和耐腐蚀性
公开(公告)号：US07169488B2
公开(公告)日：2007-01-30
申请号：US10705069
申请日：2003-11-10
申请人： Qixu Chen , Tom Nolan , Raj Nagappan Thangaraj , Zhong (Stella) Wu , Samuel Dacke Harkness
发明人： Qixu Chen , Tom Nolan , Raj Nagappan Thangaraj , Zhong (Stella) Wu , Samuel Dacke Harkness
IPC分类号： G11B5/66 , G11B5/70
CPC分类号： G11B5/732 , G11B5/65 , G11B5/667 , G11B5/72 , G11B5/8408 , G11B5/851 , G11B2005/0029
摘要： A granular perpendicular magnetic recording medium having a surface treated magnetic layer comprising an oxidized or nitrogenized boundary layer formed on the surface of the magnetic layer, wherein the magnetic layer comprises granular magnetic regions having oxygen and/or nitrogen-containing grain boundaries. In one embodiment, the granular perpendicular recording medium further comprises a soft magnetic layer below the surface treated granular magnetic layer and a protective overcoat over the surface treated granular magnetic layer. A method of manufacturing a granular perpendicular magnetic recording medium includes depositing a magnetic layer having granular structure over a substrate and subsequently surface treating the granular magnetic layer in an oxygen and/or nitrogen-containing atmosphere to produce an oxidized and/or nitrogenized boundary layer formed on the surface of the granular magnetic layer. The granular perpendicular magnetic recording medium of the present invention exhibits high Hc and SNR while exhibiting improved corrosion resistance and contact start-stop performance.
摘要翻译：一种具有表面处理的磁性层的颗粒状垂直磁记录介质，包括形成在磁性层的表面上的氧化或氮化的边界层，其中磁性层包括具有氧和/或含氮晶界的颗粒状磁性区域。在一个实施例中，粒状垂直记录介质还包括在表面处理的颗粒磁性层下方的软磁性层和在表面处理过的颗粒状磁性层上的保护性外涂层。一种制造粒状垂直磁记录介质的方法包括在衬底上沉积具有粒状结构的磁性层，随后在氧和/或含氮气氛中表面处理粒状磁性层，以形成形成的氧化和/或氮化的边界层在粒状磁性层的表面上。本发明的粒状垂直磁记录介质表现出高的Hc和SNR，同时具有改进的耐腐蚀性和接触起止性能。

12. 发明申请

US20100215846A1 GRANULAR PERPENDICULAR MAGNETIC RECORDING MEDIA WITH DUAL RECORDING LAYER AND METHOD OF FABRICATING SAME 审中-公开
标题翻译：具有双重记录层的颗粒状全磁性记录介质及其制造方法
公开(公告)号：US20100215846A1
公开(公告)日：2010-08-26
申请号：US12769551
申请日：2010-04-28
申请人： Zhong (Stella) Wu , Samuel Dacke Harkness, IV , Hans J. Richter , Alexander Yulievich Dobin
发明人： Zhong (Stella) Wu , Samuel Dacke Harkness, IV , Hans J. Richter , Alexander Yulievich Dobin
IPC分类号： G11B5/62
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，包括靠近衬底并具有第一饱和磁化（Ms）1的第一粒状垂直磁性层和第二颗粒垂直磁记录层并且具有第二不同的饱和磁化强度（Ms）2。还公开了一种制造颗粒状垂直磁记录介质的方法。

13. 发明申请

US20070287031A1 Thin sul perpendicular magnetic recording media and recording systems comprising same 审中-公开
标题翻译：薄型垂直磁记录介质和包括其的记录系统
公开(公告)号：US20070287031A1
公开(公告)日：2007-12-13
申请号：US11448770
申请日：2006-06-08
申请人： Thomas P. Nolan , Li Tang , Yong-Chang Feng , Zhong (Stella) Wu , Samuel D. Harkness , Hans J. Richter , Youfeng Zheng
发明人： Thomas P. Nolan , Li Tang , Yong-Chang Feng , Zhong (Stella) Wu , Samuel D. Harkness , Hans J. Richter , Youfeng Zheng
IPC分类号： G11B5/66 , G11B5/82
CPC分类号： G11B5/667 , G11B5/1278
摘要： A perpendicular magnetic recording system, comprises: a perpendicular magnetic recording medium including a non-magnetic substrate having a surface and a stacked plurality of thin film layers forming a layer stack overlying the substrate surface and including a magnetically soft underlayer (SUL) beneath at least one perpendicular magnetic recording layer, wherein the SUL has a saturation magnetization (Ms)—thickness (t) product (Mst) less than about 4 memu/cm2, and a ring-type magnetic transducer head is positioned in spaced adjacency to an upper surface of the layer stack.
摘要翻译：一种垂直磁记录系统，包括：垂直磁记录介质，包括具有表面的非磁性基板和层叠的多个薄膜层，所述薄膜层形成层叠堆叠在所述基板表面上并且至少包括至少在下面的磁软底层（SUL）一个垂直磁记录层，其中SUL具有小于约4 memu / cm 2的饱和磁化强度（M S）S - 厚度（t）积（M S） SUP> 2 <！ - SIPO - >和环型磁性换能器头位于与层堆叠的上表面间隔开的位置。

14. 发明授权

US06403241B1 CoCrPtB medium with a 1010 crystallographic orientation 有权
标题翻译： CoCrPtB介质，具有1010晶体取向
公开(公告)号：US06403241B1
公开(公告)日：2002-06-11
申请号：US09496342
申请日：2000-02-02
申请人： Qixu (David) Chen , Samuel Dacke Harkness, IV , Zhong (Stella) Wu , Lin Huang , Rajiv Yadav Ranjan , Charles Leu
发明人： Qixu (David) Chen , Samuel Dacke Harkness, IV , Zhong (Stella) Wu , Lin Huang , Rajiv Yadav Ranjan , Charles Leu
IPC分类号： G11B566
CPC分类号： G11B5/732 , C30B23/02 , C30B29/22 , C30B29/52 , G11B5/656 , G11B5/7325 , Y10T428/265
摘要： A magnetic recording medium on glass or Al substrates with film structure of NiAl seed layer/CrMo underlayer/CoCrPtB magnetic layer/carbon overcoat, in which the magnetic layer has a substantially (10.0) crystallographic orientation, exhibits high coercivity, high signal-to-medium noise ratio and low transition jitter. The medium can be used for high-density longitudinal magnetic recording. Embodiments include forming a surface oxidized NiAl sub-seed layer on a glass or glass-ceramic substrate, and sequentially depositing a seed layer of NiAl, an underlayer of Cr or Cr-alloy, such as CrMo, and a CoCrPtB magnetic layer.
摘要翻译：在玻璃或具有NiAl种子层/ CrMo底层/ CoCrPtB磁性层/碳外涂层的膜结构的Al衬底上的磁记录介质，其中磁性层具有基本上（10.0）的晶体取向，表现出高矫顽力，高信噪比，中等噪声比和低跃迁抖动。该介质可用于高密度纵向磁记录。实施例包括在玻璃或玻璃陶瓷基板上形成表面氧化的NiAl亚晶种层，并依次沉积NiAl种子层，Cr或Cr合金如CrMo和CoCrPtB磁性层的底层。

15. 发明授权

US6156422A High density magnetic recording medium with high Hr and low Mrt 有权
标题翻译：高密度，低密度磁记录介质
公开(公告)号：US6156422A
公开(公告)日：2000-12-05
申请号：US188678
申请日：1998-11-10
申请人： Zhong (Stella) Wu , Rajiv Yadav Ranjan
发明人： Zhong (Stella) Wu , Rajiv Yadav Ranjan
IPC分类号： G11B5/73 , G11B5/66
CPC分类号： G11B5/732 , G11B5/7325 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording medium exhibiting high in-plane anisotropy at low Mrt is formed employing a NiAl seedlayer and a CrMn underlayer thereon. Embodiments include magnetic recording media with a CoCrPtTa magnetic alloy layer exhibiting a Hr greater than 2800 Oe with a Mrt no greater than 0.5 memu/cm.sup.2. The resulting media also exhibit high S* and low media noise.
摘要翻译：在低Mrt处表现出高的面内各向异性的磁记录介质使用NiAl种层和CrMn底层在其上形成。实施方案包括具有表现出大于2800Oe的Hr的CoCrPtTa磁性合金层的磁记录介质，Mrt不大于0.5 memu / cm 2。所得到的介质也表现出高S *和低介质噪声。

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