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1. 发明申请

US20060141293A1 Magnetic recording medium and magnetic storage device 失效
公开(公告)号：US20060141293A1
公开(公告)日：2006-06-29
申请号：US11077461
申请日：2005-03-10
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/656 , G11B5/66 , G11B5/7325
摘要： A magnetic recording medium is disclosed that is able to increase a coercive force Hc of a recording layer and improve a signal-to-noise ratio of the recording layer without degradation of a thermal fluctuation resistance of the recording layer, and enables high density recording. The magnetic recording medium includes a substrate, a seed layer formed from a crystalline material, a grain diameter control layer, an underlying layer, and a recording layer. The grain diameter control layer is formed from an Ag film or a W film, to be a dispersed film or a continuous film on the seed layer. The grain diameter control layer acts as growing nuclei of the underlying layer formed thereon, and controls crystal grain diameters of the underlying layer. Especially, when the grain diameter control layer is deposited to be a dispersed layer, the underlying layer grows on the seed layer and the grain diameter control layer, and due to influence of the surface of the seed layer, the crystalline property of the underlying layer is improved.

2. 发明授权

US07604879B2 Perpendicular magnetic recording medium and magnetic storage apparatus 失效
标题翻译：垂直磁记录介质和磁存储设备
公开(公告)号：US07604879B2
公开(公告)日：2009-10-20
申请号：US11603520
申请日：2006-11-21
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/66
CPC分类号： G11B5/82 , G11B5/65 , G11B5/66 , G11B5/7325
摘要： A perpendicular magnetic recording medium is provided with a substrate, a soft magnetic back layer provided on a surface of the substrate, an orientation controlling underlayer provided on the soft magnetic back layer, and a recording layer provided above the orientation controlling underlayer and having axes of easy magnetization approximately perpendicular to the surface of the substrate. The recording layer is made of a ferromagnetic material having an hcp crystal structure. The orientation controlling underlayer is made of a nonmagnetic material having an fcc crystal structure and having NiCr or NiCu as a main component.
摘要翻译：垂直磁记录介质设置有基板，设置在基板的表面上的软磁性背层，设置在软磁性背层上的取向控制底层，以及设置在取向控制底层上方的记录层，容易的磁化大致垂直于衬底的表面。记录层由具有hcp晶体结构的铁磁材料制成。取向控制底层由具有fcc晶体结构且具有NiCr或NiCu作为主要成分的非磁性材料制成。

3. 发明申请

US20050042480A1 Magnetic recording medium and manufacturing method therefor 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20050042480A1
公开(公告)日：2005-02-24
申请号：US10953093
申请日：2004-09-29
申请人： Reiko Murao , Takashi Gouke , Isatake Kaitsu , Akira Kikuchi
发明人： Reiko Murao , Takashi Gouke , Isatake Kaitsu , Akira Kikuchi
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/851
CPC分类号： G11B5/66 , G11B5/656 , G11B5/7325 , G11B5/7379 , G11B5/8404 , G11B5/851
摘要： A magnetic recording medium including a ferromagnetic layer made of a Co-based alloy material, a nonmagnetic coupling layer formed on the ferromagnetic layer and made of Ru or a Ru-based alloy material, and a magnetic recording layer formed on the nonmagnetic coupling layer and made of a Co-based alloy material. The nonmagnetic coupling layer is formed by sputtering in an atmosphere of Ar—N2 mixed gas, so that the nonmagnetic coupling layer contains nitrogen. The partial pressure of nitrogen during the sputtering is set in the range of 6.7×10−3 to 3.7×10−2 Pa.
摘要翻译：一种磁记录介质，包括由Co基合金材料制成的铁磁层，形成在铁磁层上的由Ru或Ru基合金材料制成的非磁性耦合层和形成在非磁性耦合层上的磁记录层和由Co基合金材料制成。非磁耦合层通过溅射在Ar-N 2混合气体的气氛中形成，使得非磁性耦合层含有氮。溅射期间氮的分压设定在6.7×10 -3至3.7×10 -2 Pa的范围内。

4. 发明授权

US07592081B2 Magnetic recording medium and magnetic storage device 失效
标题翻译：磁记录介质和磁存储装置
公开(公告)号：US07592081B2
公开(公告)日：2009-09-22
申请号：US11077461
申请日：2005-03-10
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/656 , G11B5/66 , G11B5/7325
摘要： A magnetic recording medium is disclosed that is able to increase a coercive force Hc of a recording layer and improve a signal-to-noise ratio of the recording layer without degradation of a thermal fluctuation resistance of the recording layer, and enables high density recording. The magnetic recording medium includes a substrate, a seed layer formed from a crystalline material, a grain diameter control layer, an underlying layer, and a recording layer. The grain diameter control layer is formed from an Ag film or a W film, to be a dispersed film or a continuous film on the seed layer. The grain diameter control layer acts as growing nuclei of the underlying layer formed thereon, and controls crystal grain diameters of the underlying layer. Especially, when the grain diameter control layer is deposited to be a dispersed layer, the underlying layer grows on the seed layer and the grain diameter control layer, and due to influence of the surface of the seed layer, the crystalline property of the underlying layer is improved.
摘要翻译：公开了能够增加记录层的矫顽力Hc并提高记录层的信噪比而不降低记录层的热波动电阻的磁记录介质，并且能够进行高密度记录。磁记录介质包括基底，由结晶材料形成的晶种层，晶粒直径控制层，下层和记录层。粒径控制层由Ag膜或W膜形成为种子层上的分散膜或连续膜。粒径控制层作为其上形成的下层的生长核，并控制下层的晶粒直径。特别地，当粒径控制层沉积成分散层时，下层在种子层和晶粒直径控制层上生长，并且由于种子层的表面的影响，底层的结晶性质改进了

5. 发明申请

US20080024918A1 Perpendicular magnetic recording medium and magnetic storage apparatus 失效
标题翻译：垂直磁记录介质和磁存储设备
公开(公告)号：US20080024918A1
公开(公告)日：2008-01-31
申请号：US11603520
申请日：2006-11-21
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/82
CPC分类号： G11B5/82 , G11B5/65 , G11B5/66 , G11B5/7325
摘要： A perpendicular magnetic recording medium is provided with a substrate, a soft magnetic back layer provided on a surface of the substrate, an orientation controlling underlayer provided on the soft magnetic back layer, and a recording layer provided above the orientation controlling underlayer and having axes of easy magnetization approximately perpendicular to the surface of the substrate. The recording layer is made of a ferromagnetic material having an hcp crystal structure. The orientation controlling underlayer is made of a nonmagnetic material having an fcc crystal structure and having NiCr or NiCu as a main component.
摘要翻译：垂直磁记录介质设置有基板，设置在基板的表面上的软磁性背层，设置在软磁性背层上的取向控制底层，以及设置在取向控制底层上方的记录层，容易的磁化大致垂直于衬底的表面。记录层由具有hcp晶体结构的铁磁材料制成。取向控制底层由具有fcc晶体结构且具有NiCr或NiCu作为主要成分的非磁性材料制成。

6. 发明申请

US20060210836A1 Magnetic recording medium and magnetic storage unit 审中-公开
标题翻译：磁记录介质和磁存储单元
公开(公告)号：US20060210836A1
公开(公告)日：2006-09-21
申请号：US11152118
申请日：2005-06-14
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66 , G11B5/7379
摘要： A magnetic recording medium is disclosed that includes a substrate, a base layer provided on the substrate, and a recording layer provided on the base layer. The recording layer includes a first magnetic layer and a second magnetic layer from the base layer side. Each of the first magnetic layer and the second magnetic layer includes a ferromagnetic material composed mainly of CoCrPtB. The first magnetic layer contains more B and less Cr than the second magnetic layer on an atomic percentage basis.
摘要翻译：公开了一种磁记录介质，其包括基板，设置在基板上的基底层和设置在基底层上的记录层。记录层包括第一磁性层和来自基底层侧的第二磁性层。第一磁性层和第二磁性层中的每一个包括主要由CoCrPtB组成的铁磁材料。第一磁性层以原子百分比为基础含有比第二磁性层更多的B和更少的Cr。

7. 发明授权

US07094482B2 Recording medium having magnetic layer of smaller thickness 有权
标题翻译：具有较小厚度的磁性层的记录介质
公开(公告)号：US07094482B2
公开(公告)日：2006-08-22
申请号：US10353609
申请日：2003-01-29
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： B32B5/66 , B32B5/70
CPC分类号： G11B5/66
摘要： A polycrystalline structure film is formed on the surface of a substrate in a magnetic recording medium. The second magnetic layer has a saturation magnetic flux density Bs larger than that of the first magnetic layer in the polycrystalline structure film, so that the magnetic layer for recordation ensures a larger residual magnetization Br, as compared with the case where the first magnetic layer solely forms a magnetic layer for recordation. A sufficient magnitude of product tBr of thickness t and residual magnetization Br can be obtained even if the thickness of the overall magnetic layer for recordation is reduced. A sufficient magnitude of magnetic outputs can be ensured. A reduced thickness of the magnetic layer serves to minimize the magnetic crystal grains in the first and second magnetic layers. A higher resolution of recordation and reproduction can be obtained.
摘要翻译：在磁记录介质中的基板的表面上形成多晶结构膜。第二磁性层的多晶结构膜的饱和磁通密度Bs大于第一磁性层的饱和磁通密度Bs，与仅将第一磁性层完全相比，用于记录的磁性层确保较大的剩余磁化强度Br 形成记录磁性层。即使用于记录的整个磁性层的厚度减小，也可以获得足够大的厚度t的产物tBr和剩余磁化强度Br。可以确保足够大的磁输出。磁性层的减小的厚度用于使第一和第二磁性层中的磁晶粒最小化。可以获得更高的记录和再现分辨率。

8. 发明申请

US20050069734A1 Thermally stable low noise magnetic recording media 失效
标题翻译：耐热稳定的低噪音磁记录介质
公开(公告)号：US20050069734A1
公开(公告)日：2005-03-31
申请号：US10975282
申请日：2004-10-28
申请人： Chiaki Okuyama , Akira Kikuchi , Takashi Gouke
发明人： Chiaki Okuyama , Akira Kikuchi , Takashi Gouke
IPC分类号： G11B5/738 , G11B5/62 , G11B5/64 , G11B5/73 , B32B1/00
CPC分类号： G11B5/7325 , G11B5/656 , Y10T428/265
摘要： A magnetic recording medium which is thermally stable and produces low media noise. By providing a plurality of intermediate layers made of a CoCr alloy of which saturation magnetic flux densities are controlled within a predetermined range, the magnetic recording medium simultaneously realizes both a high S/Nm and thermal stability.
摘要翻译：一种热稳定并产生低介质噪声的磁记录介质。通过提供由饱和磁通密度控制在预定范围内的CoCr合金制成的多个中间层，磁记录介质同时实现高S / Nm和热稳定性。

9. 发明授权

US07462410B2 Magnetic recording medium and magnetic storage apparatus 失效
标题翻译：磁记录介质和磁存储装置
公开(公告)号：US07462410B2
公开(公告)日：2008-12-09
申请号：US11065512
申请日：2005-02-24
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/656 , G11B5/66 , G11B5/7325
摘要： A magnetic recording medium includes a substrate, an AlFe-based alloy layer provided above the substrate, an underlayer provided on the AlFe-based alloy layer, and a recording layer provided on the underlayer and magnetized in a predetermined recording direction when being recorded with information. The substrate has a textured surface having grooves formed approximately along the recording direction.
摘要翻译：磁记录介质包括基板，设置在基板上方的AlFe基合金层，设置在AlFe基合金层上的底层，以及设置在下层上并在被记录有信息时以预定的记录方向被磁化的记录层。衬底具有纹理表面，其具有沿着记录方向近似形成的凹槽。

10. 发明申请

US20080130172A1 Magnetic recording medium, magnetic recording apparatus, and method of manufacturing magnetic recording medium 审中-公开
标题翻译：磁记录介质，磁记录装置和制造磁记录介质的方法
公开(公告)号：US20080130172A1
公开(公告)日：2008-06-05
申请号：US11904988
申请日：2007-09-28
申请人： Takashi Gouke
发明人： Takashi Gouke
IPC分类号： G11B5/74
CPC分类号： G11B5/667 , G11B5/656 , G11B5/66 , G11B5/7325 , G11B5/8404
摘要： This invention relates to a magnetic recording medium that magnetically records information, and the like. The magnetic recording medium enhances write-reception performance by reducing the distance between a recording layer and a backing layer while maintaining low noise performance. The magnetic recording medium has a non-magnetic substrate, a backing layer formed on the non-magnetic substrate, an underlayer formed on the backing layer, an intermediate layer formed on the underlayer, and a recording layer which is formed on the intermediate layer and which is a perpendicular magnetic anisotropy. The intermediate layer includes two or more layers which are formed as film layers such that an upper layer of the two or more layers has a thicker film thickness and a higher gas pressure at which the layer is formed in comparison to a layer under the upper layer.
摘要翻译：本发明涉及磁记录信息的磁记录介质等。磁记录介质通过减小记录层和背衬层之间的距离来提高写入接收性能，同时保持低噪声性能。磁记录介质具有非磁性基板，形成在非磁性基板上的背衬层，形成在背衬层上的底层，形成在下层上的中间层，以及形成在中间层上的记录层和这是垂直磁各向异性。中间层包括形成为膜层的两层或更多层，使得两层或更多层的上层与上层的层相比具有较厚的膜厚度和形成该层的较高气体压力。

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