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公开(公告)号：US20150332721A1
公开(公告)日：2015-11-19
申请号：US14808063
申请日：2015-07-24
Applicant: Seagate Technology LLC
Inventor： Jai-Young Kim , Thomas P. Nolan , Kyongha Kang , Shoutao Wang , Vincent D. Nguyen , Abebe Hailu , Charles C. Chen
CPC classification number: G11B5/82 , G11B5/66 , G11B5/7325 , G11B5/851
Abstract: A stack including a crystallographic orientation interlayer, a magnetic zero layer disposed on the interlayer, and a magnetic recording layer disposed on the magnetic zero layer is disclosed. The magnetic zero layer is non-magnetic or has a saturation magnetic flux density (Bs) less than about 100 emu/cc. The magnetic zero layer and the magnetic layer include grains surrounded by a non-magnetic segregant. The magnetic zero layer provides a coherent interface between the interlayer and the magnetic layer with a lattice mismatch less than about 4%.
Abstract translation: 公开了一种包括晶体取向中间层，设置在中间层上的磁性零层和设置在磁性零层上的磁记录层的堆叠。 磁性零层是非磁性的或具有小于约100emu / cc的饱和磁通密度（Bs）。 磁性零层和磁性层包括由非磁性分离器包围的晶粒。 磁性零层在中间层和磁性层之间提供具有小于约4％的晶格失配的相干界面。
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公开(公告)号：US20140186658A1
公开(公告)日：2014-07-03
申请号：US14159362
申请日：2014-01-20
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Shoutao Wang , Weilu Xu , Chung-hee Chang , Xiaoguang Ma , Mark Johnson , Abebe Hailu , Charles Chen
CPC classification number: G11B5/84 , G11B5/732 , G11B5/7325 , G11B5/738
Abstract: An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy.
Abstract translation: 提供了用于改进垂直磁记录介质的装置和方法。 本发明在满足介质性能要求的同时，提供了具有降低的钌（Ru）含量层间结构的以成本有效的方式制造介质的介质和方法。 提供了包括具有表面的非磁性基底和位于基底表面上的层叠的垂直磁记录介质。 层叠体以从衬底表面的叠加顺序包括一个软磁软底层; 无定形或结晶的非磁性种子层; 用于晶体取向位于底层上的垂直磁记录材料层的层间结构; 以及位于层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层。 层间结构是层叠结构，其叠加顺序为：位于种子层上的铬合金; 和位于铬合金上的上层。
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公开(公告)号：US09734857B2
公开(公告)日：2017-08-15
申请号：US14808063
申请日：2015-07-24
Applicant: Seagate Technology LLC
Inventor： Jai-Young Kim , Thomas P. Nolan , Kyongha Kang , Shoutao Wang , Vincent D. Nguyen , Abebe Hailu , Charles C. Chen
CPC classification number: G11B5/82 , G11B5/66 , G11B5/7325 , G11B5/851
Abstract: A stack including a crystallographic orientation interlayer, a magnetic zero layer disposed on the interlayer, and a magnetic recording layer disposed on the magnetic zero layer is disclosed. The magnetic zero layer is non-magnetic or has a saturation magnetic flux density (Bs) less than about 100 emu/cc. The magnetic zero layer and the magnetic layer include grains surrounded by a non-magnetic segregant. The magnetic zero layer provides a coherent interface between the interlayer and the magnetic layer with a lattice mismatch less than about 4%.
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公开(公告)号：US09190095B2
公开(公告)日：2015-11-17
申请号：US14159362
申请日：2014-01-20
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Shoutao Wang , Weilu Xu , Chung-hee Chang , Xiaoguang Ma , Mark Johnson , Abebe Hailu , Charles Chen
CPC classification number: G11B5/84 , G11B5/732 , G11B5/7325 , G11B5/738
Abstract: An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy.
Abstract translation: 提供了用于改进垂直磁记录介质的装置和方法。 本发明在满足介质性能要求的同时，提供了具有降低的钌（Ru）含量层间结构的以成本有效的方式制造介质的介质和方法。 提供了包括具有表面的非磁性基底和位于基底表面上的层叠的垂直磁记录介质。 层叠体以从衬底表面的叠加顺序包括一个软磁软底层; 无定形或结晶的非磁性种子层; 用于晶体取向位于底层上的垂直磁记录材料层的层间结构; 以及位于层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层。 层间结构是层叠结构，其叠加顺序为：位于种子层上的铬合金; 和位于铬合金上的上层。
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