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1. 发明授权

US08313848B2 Perpendicular media with Cr-doped Fe-alloy containing soft underlayer (SUL) 有权
标题翻译：垂直介质与含Cr的Fe合金含有软底层（SUL）
公开(公告)号：US08313848B2
公开(公告)日：2012-11-20
申请号：US13209967
申请日：2011-08-15
申请人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
发明人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
摘要翻译：具有基板，含有约8-18％（原子）Cr的Cr掺杂的含Fe合金的底层和垂直记录磁性层的垂直磁记录介质以及用于提高记录介质的耐腐蚀性和制造记录的方法介质。

2. 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。

3. 发明授权

US07105240B2 Perpendicular media with improved corrosion performance 失效
标题翻译：垂直介质具有改善的腐蚀性能
公开(公告)号：US07105240B2
公开(公告)日：2006-09-12
申请号：US10742100
申请日：2003-12-19
申请人： Zhong (Stella) Wu , Raj Nagappan Thangaraj , Samuel Dacke Harkness
发明人： Zhong (Stella) Wu , Raj Nagappan Thangaraj , Samuel Dacke Harkness
IPC分类号： G11B5/66 , G11B5/70
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/72 , G11B5/851
摘要： A perpendicular recording medium having a magnetic layer comprising cobalt, platinum, and at least one of molybdenum and chromium. In a preferred embodiment, the perpendicular recording medium comprises granular magnetic regions having oxygen-containing grain boundaries. The magnetic layer of the present invention preferably exhibits improved corrosion resistance while maintaining the magnetic properties suitable for high density perpendicular recording.
摘要翻译：一种具有磁性层的垂直记录介质，包括钴，铂以及钼和铬中的至少一种。在优选实施例中，垂直记录介质包括具有含氧晶界的粒状磁区。本发明的磁性层优选具有改进的耐腐蚀性，同时保持适合于高密度垂直记录的磁特性。

4. 发明授权

US07998606B2 Perpendicular media with Cr-doped Fe-alloy-containing soft underlayer (SUL) 有权
标题翻译：具有掺杂Cr的含Fe合金的软底层（SUL）的垂直介质
公开(公告)号：US07998606B2
公开(公告)日：2011-08-16
申请号：US12510114
申请日：2009-07-27
申请人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
发明人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
摘要翻译：具有基板，含有约8-18％（原子）Cr的Cr掺杂的含Fe合金的底层和垂直记录磁性层的垂直磁记录介质以及用于提高记录介质的耐腐蚀性和制造记录的方法介质。

5. 发明申请

US20120070694A1 Perpendicular Media with Cr-Doped Fe-Alloy Containing Soft Underlayer (SUL) 有权
标题翻译：垂直介质，含Cr掺杂Fe合金软质底层（SUL）
公开(公告)号：US20120070694A1
公开(公告)日：2012-03-22
申请号：US13209967
申请日：2011-08-15
申请人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
发明人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
IPC分类号： G11B5/66 , G11B5/84 , G11B5/667
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
摘要翻译：具有基板，含有约8-18％（原子）Cr的Cr掺杂的含Fe合金的底层和垂直记录磁性层的垂直磁记录介质以及用于提高记录介质的耐腐蚀性和制造记录的方法介质。

6. 发明申请

US20100081012A1 PERPENDICULAR MEDIA WITH Cr-DOPED Fe-ALLOY-CONTAINING SOFT UNDERLAYER (SUL) FOR IMPROVED CORROSION PERFORMANCE 有权
标题翻译：具有铬含量的含铁合金软土（SUL）用于改善腐蚀性能的PERPENDICULAR MEDIA
公开(公告)号：US20100081012A1
公开(公告)日：2010-04-01
申请号：US12510114
申请日：2009-07-27
申请人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
发明人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael J. Stirniman , Thomas Patrick Nolan
IPC分类号： G11B5/706 , C23C14/34
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
摘要翻译：具有基板，含有约8-18％（原子）Cr的Cr掺杂的含Fe合金的底层和垂直记录磁性层的垂直磁记录介质以及用于提高记录介质的耐腐蚀性和制造记录的方法介质。

7. 发明授权

US07566508B2 Perpendicular media with Cr-doped Fe-alloy-containing soft underlayer (SUL) for improved corrosion performance 有权
标题翻译：垂直介质与掺杂Cr的含Fe合金的软底层（SUL），以提高腐蚀性能
公开(公告)号：US07566508B2
公开(公告)日：2009-07-28
申请号：US11068898
申请日：2005-03-02
申请人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael Joseph Stirniman
发明人： Raj Nagappan Thangaraj , Mariana Rodica Munteanu , Erol Girt , Michael Joseph Stirniman
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
摘要翻译：具有基板，含有约8-18％（原子）Cr的Cr掺杂的含Fe合金的底层和垂直记录磁性层的垂直磁记录介质以及用于提高记录介质的耐腐蚀性和制造记录的方法介质。

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