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1. 发明申请

US20090015967A1 PERPENDICULAR MAGNETIC RECORDING MEDIA AND PERPENDICULAR MAGNETIC RECORDING APPARATUS 有权
标题翻译：全磁磁记录介质和全磁磁记录装置
公开(公告)号：US20090015967A1
公开(公告)日：2009-01-15
申请号：US12168124
申请日：2008-07-05
申请人： Yoshiyuki KUBOKI
发明人： Yoshiyuki KUBOKI
IPC分类号： G11B5/74
CPC分类号： G11B5/7325 , G11B5/656
摘要： A perpendicular magnetic recording media is disclosed which employs inexpensive materials in the intermediate layer of the high-recording density media while exhibiting magnetic characteristics comparable or superior to those of media using Ru or Re. A perpendicular magnetic recording apparatus employing this perpendicular magnetic recording media also is disclosed. The perpendicular magnetic recording media has a nonmagnetic substrate, a soft magnetic backing layer formed on the nonmagnetic substrate, a seed layer formed on the soft magnetic backing layer, an intermediate layer formed on the seed layer, a magnetic layer formed on the intermediate layer, and a protective layer formed on the magnetic layer. The intermediate layer comprises an alloy with the hcp structure containing 55 at % or more Zn, the magnetic layer comprises an alloy with the hcp structure containing Co, and the Aθ50 value of the orientation plane (0002) of the magnetic layer is between 1.5° and 4°.
摘要翻译：公开了一种垂直磁记录介质，其在高记录密度介质的中间层中使用便宜的材料，同时具有与使用Ru或Re的介质相当或优于其的磁特性。公开了一种采用该垂直磁记录介质的垂直磁记录装置。垂直磁记录介质具有非磁性基板，形成在非磁性基板上的软磁性背衬层，形成在软磁性背衬层上的种子层，形成在种子层上的中间层，形成在中间层上的磁性层，以及形成在磁性层上的保护层。中间层包括具有55at％或更多Zn的hcp结构的合金，磁性层包括具有包含Co的hcp结构的合金，并且磁性层的取向平面（0002）的Atheta50值在1.5°之间和4°。

2. 发明申请

US20090226765A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM 有权
标题翻译：全能磁记录介质
公开(公告)号：US20090226765A1
公开(公告)日：2009-09-10
申请号：US12396714
申请日：2009-03-03
申请人： Yoshiyuki KUBOKI
发明人： Yoshiyuki KUBOKI
IPC分类号： G11B5/73
CPC分类号： G11B5/65 , G11B5/732 , G11B5/7325
摘要： A perpendicular magnetic recording medium having a soft magnetic backing layer is disclosed. The medium has reduced Co elution, improved corrosion resistance, and satisfactory electromagnetic transducing characteristics, without providing constraints on the configuration of the protective layer such as, for example, the thickness of the protective layer, film deposition processes or layer configuration.
摘要翻译：公开了一种具有软磁背衬层的垂直磁记录介质。介质具有降低的Co洗脱，改进的耐腐蚀性和令人满意的电磁转换特性，而不会对保护层的构造例如保护层的厚度，膜沉积工艺或层构造施加限制。

3. 发明申请

US20100086809A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM 有权
标题翻译：全能磁记录介质
公开(公告)号：US20100086809A1
公开(公告)日：2010-04-08
申请号：US12552407
申请日：2009-09-02
申请人： Yoshiyuki KUBOKI
发明人： Yoshiyuki KUBOKI
IPC分类号： G11B5/706
CPC分类号： G11B5/732 , G11B5/65
摘要： A magnetic recording medium exhibiting a high recording density performance is disclosed. The perpendicular magnetic recording medium has a soft magnetic underlayer, a first seed layer, a second seed layer, an intermediate layer, a granular magnetic recording layer, a non-granular magnetic recording layer, a protective layer, and a lubricant layer laminated on a nonmagnetic substrate in this order. The first seed layer contains cobalt, nickel, and at least one element selected from a group consisting of Si, Cr, V, Zr, Nb, Ta, Ti, Cu, and Mo, and the second seed layer contains nickel, chromium, and at least one element selected from a group consisting of Si, V, Zr, Nb, Ta, Ti, Cu, and Mo.
摘要翻译：公开了一种表现出高记录密度性能的磁记录介质。垂直磁记录介质具有软磁性底层，第一种子层，第二晶种层，中间层，粒状磁记录层，非粒状磁记录层，保护层和层压在非磁性基片。第一晶种层含有钴，镍和选自由Si，Cr，V，Zr，Nb，Ta，Ti，Cu和Mo组成的组中的至少一种元素，第二籽晶层含有镍，铬和选自由Si，V，Zr，Nb，Ta，Ti，Cu和Mo组成的组中的至少一种元素。

4. 发明授权

US08617727B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08617727B2
公开(公告)日：2013-12-31
申请号：US13106277
申请日：2011-05-12
申请人： Yoshiyuki Kuboki
发明人： Yoshiyuki Kuboki
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/732 , G11B5/7325
摘要： A perpendicular magnetic recording medium is disclosed which is capable of reducing the orientational dispersion and crystal grain size of a magnetic recording layer, simultaneously reducing the thickness of a non-magnetic intermediate layer, hence, reducing noise, and improving S/N ratio and recording density characteristics. The medium includes a non-magnetic substrate, soft magnetic underlayer, seed layer, first non-magnetic intermediate layer, second non-magnetic intermediate layer, granular magnetic recording layer, exchange coupling force control layer, non-granular magnetic recording layer, protective layer, and lubricant layer sequentially formed on the non-magnetic substrate. The first and second non-magnetic intermediate layers are laminated to form a two-layer non-magnetic intermediate layer and the seed layer is made of a material having an fcc structure.
摘要翻译：公开了能够降低磁记录层的取向分散和晶粒尺寸的垂直磁记录介质，同时减小非磁性中间层的厚度，从而降低噪声，提高S / N比和记录密度特性。该介质包括非磁性基底，软磁性底层，种子层，第一非磁性中间层，第二非磁性中间层，粒状磁记录层，交换耦合力控制层，非粒状磁记录层，保护层，和顺序地形成在非磁性基板上的润滑剂层。第一和第二非磁性中间层被层压以形成两层非磁性中间层，种子层由具有fcc结构的材料制成。

5. 发明申请

US20120021254A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM 有权
标题翻译：全能磁记录介质
公开(公告)号：US20120021254A1
公开(公告)日：2012-01-26
申请号：US13106277
申请日：2011-05-12
申请人： Yoshiyuki KUBOKI
发明人： Yoshiyuki KUBOKI
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/732 , G11B5/7325
摘要： A perpendicular magnetic recording medium is disclosed which is capable of reducing the orientational dispersion and crystal grain size of a magnetic recording layer, simultaneously reducing the thickness of a non-magnetic intermediate layer, hence, reducing noise, and improving S/N ratio and recording density characteristics. The medium includes a non-magnetic substrate, soft magnetic underlayer, seed layer, first non-magnetic intermediate layer, second non-magnetic intermediate layer, granular magnetic recording layer, exchange coupling force control layer, non-granular magnetic recording layer, protective layer, and lubricant layer sequentially formed on the non-magnetic substrate. The first and second non-magnetic intermediate layers are laminated to form a two-layer non-magnetic intermediate layer and the seed layer is made of a material having an fcc structure.
摘要翻译：公开了能够降低磁记录层的取向分散和晶粒尺寸的垂直磁记录介质，同时减小非磁性中间层的厚度，从而降低噪声，提高S / N比和记录密度特性。该介质包括非磁性基底，软磁性底层，种子层，第一非磁性中间层，第二非磁性中间层，粒状磁记录层，交换耦合力控制层，非粒状磁记录层，保护层，和顺序地形成在非磁性基板上的润滑剂层。第一和第二非磁性中间层被层压以形成两层非磁性中间层，种子层由具有fcc结构的材料制成。

6. 发明授权

US07542235B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US07542235B2
公开(公告)日：2009-06-02
申请号：US11370206
申请日：2006-03-07
申请人： Yoshiyuki Kuboki
发明人： Yoshiyuki Kuboki
IPC分类号： G11B5/667 , G11B5/82
CPC分类号： G11B5/667
摘要： A perpendicular magnetic recording medium having a soft magnetic backing layer in which amount of cobalt elution is suppressed without imposing restraint on the construction of the protective layer is disclosed. The perpendicular magnetic recording medium of the invention comprises at least a soft magnetic backing layer, a magnetic recording layer, and a protective layer sequentially laminated on a nonmagnetic substrate, the soft magnetic backing layer containing iron and cobalt, and further containing at least two elements selected from Si, Ni, Ta, Nb, Zr, Ti, Cr, Mo, and B, and the surface roughness of the soft magnetic backing layer being in a range of 0.2 nm to 0.8 nm in center line average roughness. The iron concentration in the soft magnetic backing layer preferably is in the range of 40 at % to 85 at %, the cobalt concentration preferably is in a range of 10 at % to 45 at %, and the total concentration of Si, Ni, Ta, Nb, Zr, Ti, Cr, Mo, and B is in a range of 20 at % to 50 at %.
摘要翻译：公开了一种垂直磁记录介质，其具有抑制钴洗脱量的软磁背衬层，而不对保护层的结构施加约束。本发明的垂直磁记录介质至少包括软磁背衬层，磁记录层和顺序层压在非磁性基底上的保护层，所述软磁背衬层含有铁和钴，并且还包含至少两个元素选自Si，Ni，Ta，Nb，Zr，Ti，Cr，Mo和B，软磁背衬层的表面粗糙度在中心线平均粗糙度为0.2nm〜0.8nm的范围内。软磁背衬层中的铁浓度优选在40at％至85at％的范围内，钴浓度优选在10at％至45at％的范围内，Si，Ni，Ta的总浓度，Nb，Zr，Ti，Cr，Mo，B为20原子％〜50原子％的范围。

7. 发明申请

US20060057430A1 Perpendicular magnetic recording medium 审中-公开
标题翻译：垂直磁记录介质
公开(公告)号：US20060057430A1
公开(公告)日：2006-03-16
申请号：US11223783
申请日：2005-09-09
申请人： Yoshiyuki Kuboki
发明人： Yoshiyuki Kuboki
IPC分类号： G11B5/65
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656 , G11B5/7379
摘要： A perpendicular magnetic recording medium is disclosed that exhibits improved write performance without impairing thermal stability or electromagnetic conversion performance such as noise characteristics. A perpendicular magnetic recording medium of the invention comprises a nonmagnetic underlayer and a granular type magnetic layer. In measurements on ferromagnetic crystal grains by grazing incidence X-ray diffraction, a ratio A/B is in the range of 0.2 to 1.5, in which A represents an integrated intensity of fcc (111) peak obtained with a X-axis angle of 69.5° and B represents an integrated intensity of hcp (101) peak obtained with a X-axis angle of 60.2°. The medium can include a soft magnetic backing layer and a seed layer. The seed layer preferably is a lamination of a layer with an amorphous structure and a layer with a crystal structure of fcc or hcp.
摘要翻译：公开了一种在不损害诸如噪声特性的热稳定性或电磁转换性能的情况下表现出改善的写入性能的垂直磁记录介质。本发明的垂直磁记录介质包括非磁性底层和粒状磁性层。在通过掠入射X射线衍射测量铁磁晶粒时，A / B的比值在0.2至1.5的范围内，其中A表示以X轴角为69.5°获得的fcc（111）峰的积分强度 °，B表示X轴角为60.2°的hcp（101）峰的积分强度。介质可以包括软磁背衬层和种子层。种子层优选是具有无定形结构的层和具有fcc或hcp的晶体结构的层的叠层。

8. 发明授权

US08883328B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08883328B2
公开(公告)日：2014-11-11
申请号：US12396714
申请日：2009-03-03
申请人： Yoshiyuki Kuboki
发明人： Yoshiyuki Kuboki
IPC分类号： G11B5/66 , G11B5/73 , G11B5/65
CPC分类号： G11B5/65 , G11B5/732 , G11B5/7325
摘要： A perpendicular magnetic recording medium having a soft magnetic backing layer is disclosed. The medium has reduced Co elution, improved corrosion resistance, and satisfactory electromagnetic transducing characteristics, without providing constraints on the configuration of the protective layer such as, for example, the thickness of the protective layer, film deposition processes or layer configuration.
摘要翻译：公开了一种具有软磁背衬层的垂直磁记录介质。介质具有降低的Co洗脱，改进的耐腐蚀性和令人满意的电磁转换特性，而不会对保护层的构造例如保护层的厚度，膜沉积工艺或层构造施加限制。

9. 发明授权

US08071229B2 Perpendicular magnetic recording media and perpendicular magnetic recording apparatus 有权
标题翻译：垂直磁记录介质和垂直磁记录装置
公开(公告)号：US08071229B2
公开(公告)日：2011-12-06
申请号：US12168124
申请日：2008-07-05
申请人： Yoshiyuki Kuboki
发明人： Yoshiyuki Kuboki
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/656
摘要： A perpendicular magnetic recording media is disclosed which employs inexpensive materials in the intermediate layer of the high-recording density media while exhibiting magnetic characteristics comparable or superior to those of media using Ru or Re. A perpendicular magnetic recording apparatus employing this perpendicular magnetic recording media also is disclosed. The perpendicular magnetic recording media has a nonmagnetic substrate, a soft magnetic backing layer formed on the nonmagnetic substrate, a seed layer formed on the soft magnetic backing layer, an intermediate layer formed on the seed layer, a magnetic layer formed on the intermediate layer, and a protective layer formed on the magnetic layer. The intermediate layer comprises an alloy with the hcp structure containing 55 at % or more Zn, the magnetic layer comprises an alloy with the hcp structure containing Co, and the Δθ50 value of the orientation plane (0002) of the magnetic layer is between 1.5° and 4°.
摘要翻译：公开了一种垂直磁记录介质，其在高记录密度介质的中间层中使用便宜的材料，同时具有与使用Ru或Re的介质相当或优于其的磁特性。公开了一种采用该垂直磁记录介质的垂直磁记录装置。垂直磁记录介质具有非磁性基板，形成在非磁性基板上的软磁性背衬层，形成在软磁性背衬层上的种子层，形成在种子层上的中间层，形成在中间层上的磁性层，以及形成在磁性层上的保护层。中间层包括具有55at％或更多Zn的hcp结构的合金，磁性层包括具有包含Co的hcp结构的合金，以及磁性层的取向平面（0002）的值在1.5°和4°之间。

10. 发明授权

US07972716B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US07972716B2
公开(公告)日：2011-07-05
申请号：US12552407
申请日：2009-09-02
申请人： Yoshiyuki Kuboki
发明人： Yoshiyuki Kuboki
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/65
摘要： A magnetic recording medium exhibiting a high recording density performance is disclosed. The perpendicular magnetic recording medium has a soft magnetic underlayer, a first seed layer, a second seed layer, an intermediate layer, a granular magnetic recording layer, a non-granular magnetic recording layer, a protective layer, and a lubricant layer laminated on a nonmagnetic substrate in this order. The first seed layer contains cobalt, nickel, and at least one element selected from a group consisting of Si, Cr, V, Zr, Nb, Ta, Ti, Cu, and Mo, and the second seed layer contains nickel, chromium, and at least one element selected from a group consisting of Si, V, Zr, Nb, Ta, Ti, Cu, and Mo.
摘要翻译：公开了一种表现出高记录密度性能的磁记录介质。垂直磁记录介质具有软磁性底层，第一种子层，第二晶种层，中间层，粒状磁记录层，非粒状磁记录层，保护层和层压在非磁性基片。第一晶种层含有钴，镍和选自由Si，Cr，V，Zr，Nb，Ta，Ti，Cu和Mo组成的组中的至少一种元素，第二籽晶层含有镍，铬和选自由Si，V，Zr，Nb，Ta，Ti，Cu和Mo组成的组中的至少一种元素。

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