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1. 发明申请

WO2005093719A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM USING SOFT MAGNETIC LAYER WHICH SUPPRESSES NOISE GENERATION, AND PERPENDICULAR MAGNETIC RECORDING APPARATUS THEREWITH 审中-公开
标题翻译：使用软磁体层抑制噪声产生的全磁性记录介质，及其周期性磁记录装置
公开(公告)号：WO2005093719A1
公开(公告)日：2005-10-06
申请号：PCT/JP2005/006228
申请日：2005-03-24
申请人： KABUSHIKI KAISHA TOSHIBA , SHOWA DENKO K.K. , NAKAMURA, Futoshi , TANAKA, Tsutomu , AOYAGI, Yuka , SHIMIZU, Kenji , SAKAI, Hiroshi , SAKAWAKI, Akira
发明人： NAKAMURA, Futoshi , TANAKA, Tsutomu , AOYAGI, Yuka , SHIMIZU, Kenji , SAKAI, Hiroshi , SAKAWAKI, Akira
IPC分类号： G11B5/667
CPC分类号： G11B5/66 , B82Y25/00 , G11B5/667 , H01F10/08 , H01F10/3222
摘要： The magnetic recording medium of the present invention has a substrate, a perpendicular magnetic recording layer, and a soft magnetic layer formed therebetween, having a thickness of less than 100 nm, the soft magnetic layer having a magnetic anisotropy in a surface direction, and product Bs Hc, which is a production of a saturation magnetic flux density Bs and a coercive force Hc, of not less than 79 T Aim (10 kG Oe). By making the thickness of the soft magnetic layer into the above-mentioned range, the magnetic anisotropy in surface direction can be stabilized. magnetostatic energy can be increased sufficiently by making the Bs • He the above-mentioned range. Therefore, generating of the magnetic wall in the soft magnetic layer can be suppressed, the noise generating from the soft magnetic layer can be suppressed, and a high-density recording is enabled.
摘要翻译：本发明的磁记录介质具有厚度小于100nm的基板，垂直磁记录层和形成在其间的软磁层，软磁层在表面方向上具有磁各向异性，产品 BsHc，其为饱和磁通密度Bs和矫顽力Hc的不小于79T目标（10kGOe）的产生。通过使软磁性层的厚度达到上述范围，可以使表面方向的磁各向异性稳定。可以通过使Bs充分增加静磁能。他上述范围。因此，可以抑制软磁层中的磁壁的产生，能够抑制从软磁性层产生的噪声，能够实现高密度记录。

2. 发明申请

WO2005031713A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING APPARATUS 审中-公开
标题翻译：全能磁记录介质和磁记录/再现装置
公开(公告)号：WO2005031713A1
公开(公告)日：2005-04-07
申请号：PCT/JP2004/014300
申请日：2004-09-22
申请人： KABUSHIKI KAISHA TOSHIBA , SHOWA DENKO K.K , IWASAKI, Takeshi , NAKAMURA, Futoshi , OIKAWA, Soichi , MAEDA, Tomoyuki , SAKAI, Hiroshi , SAKAWAKI, Akira , SHIMIZU, Kenji
发明人： IWASAKI, Takeshi , NAKAMURA, Futoshi , OIKAWA, Soichi , MAEDA, Tomoyuki , SAKAI, Hiroshi , SAKAWAKI, Akira , SHIMIZU, Kenji
IPC分类号： G11B5/65
CPC分类号： G11B5/65 , G11B5/656 , G11B5/667 , G11B5/732 , G11B5/7325
摘要： To make possible high density recording by making the structure of the perpendicular magnetic recording layer finer. A perpendicular magnetic recording medium 10 includes at least a nonmagnetic under layer 2, a perpendicular magnetic layer 3, and a protective layer which are stacked on a nonmagnetic substrate 1, wherein the perpendicular magnetic layer includes ferromagnetic crystal grains and nonmagnetic crystal grain boundary regions, wherein the crystal grain boundary region includes at least two kinds of oxide.
摘要翻译：通过使垂直磁记录层的结构更细，可以实现高密度记录。垂直磁记录介质10至少包括层叠在非磁性基板1上的非磁性底层2，垂直磁性层3和保护层，其中垂直磁性层包括铁磁晶粒和非磁性晶粒边界区域，其中所述晶界区包括至少两种氧化物。

3. 发明申请

WO2005064597A1 MAGNETIC RECORDING MEDIUM, MANUFACTURING METHOD FOR THE MAGNETIC RECORDING MEDIUM, AND MAGNETIC READ/WRITE APPARATUS 审中-公开
标题翻译：磁记录介质，磁记录介质的制造方法和磁读/写装置
公开(公告)号：WO2005064597A1
公开(公告)日：2005-07-14
申请号：PCT/JP2004/019781
申请日：2004-12-24
申请人： KABUSHIKI KAISHA TOSHIBA , SHOWA DENKO K.K. , MAEDA, Tomoyuki , OIKAWA, Soichi , IWASAKI, Takeshi , NAKAMURA, Futoshi , SAKAI, Hiroshi , SAKAWAKI, Akira , SHIMIZU, Kenji
发明人： MAEDA, Tomoyuki , OIKAWA, Soichi , IWASAKI, Takeshi , NAKAMURA, Futoshi , SAKAI, Hiroshi , SAKAWAKI, Akira , SHIMIZU, Kenji
IPC分类号： G11B5/65
CPC分类号： G11B5/7325 , C23C14/0688 , C23C14/185 , G11B5/65 , G11B5/656 , G11B5/712 , G11B5/85
摘要： A magnetic recording medium 62 wherein a substrate 11, undercoating layers 13 and 14 formed on the substrate 11, and a magnetic recording layer 15, which include the magnetic crystal grain and the grain boundary field which encloses magnetic crystal grains, are included. The grain boundary field includes Ti oxide, and the ratio of the substance amount of the Ti oxide in the magnetic recording layer 15 is 5 mol % or more and 15 mol % or less, and the Ti oxide includes at least TiO and/or Ti 2 O 3 s.
摘要翻译：包括其中衬底11，形成在衬底11上的底涂层13和14以及磁记录层15的磁记录介质62和磁记录层15，磁记录层15包括磁晶粒和包围磁晶粒的晶界。晶界包括Ti氧化物，磁记录层15中的Ti氧化物的物质的比例为5摩尔％以上且15摩尔％以下，Ti氧化物至少包含TiO和/或Ti 2 O 3 。

4. 发明申请

WO2005034095A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM, MANUFACTURING METHOD THEREFOR, AND MAGNETIC READ/WRITE APPARATUS USING THE SAME 审中-公开
标题翻译：全磁磁记录介质，其制造方法及使用其的磁读取/写入装置
公开(公告)号：WO2005034095A1
公开(公告)日：2005-04-14
申请号：PCT/JP2004/015007
申请日：2004-10-05
申请人： KABUSHIKI KAISHA TOSHIBA , SHOWA DENKO K.K , MAEDA, Tomoyuki , OIKAWA, Soichi , IWASAKI, Takeshi , NAKAMURA, Futoshi , SAKAI, Hiroshi , SHIMIZU, Kenji , SAKAWAKI, Akira
发明人： MAEDA, Tomoyuki , OIKAWA, Soichi , IWASAKI, Takeshi , NAKAMURA, Futoshi , SAKAI, Hiroshi , SHIMIZU, Kenji , SAKAWAKI, Akira
IPC分类号： G11B5/65
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： A perpendicular magnetic recording medium includes: a substrate; at least one underlayer formed above the substrate; and a perpendicular magnetic recording layer formed above the at least one underlayer, an easy magnetization axis of the perpendicular magnetic recording layer being oriented perpendicular to the substrate, the perpendicular magnetic recording layer including magnetic crystal particles and grain boundaries surrounding the magnetic crystal particles, wherein the grain boundaries contain an oxide of silicon and at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Ca, Sr, and Ba, and the ratio of a total amount of substance of Si, Li, Na, K, Rb, Cs, Ca, Sr, and Ba in the perpendicular magnetic recording layer is no less than 1 mol% and no more than 20 mol%.
摘要翻译：垂直磁记录介质包括：基板; 至少一个底层形成在所述基底上; 以及形成在所述至少一个底层上方的垂直磁记录层，所述垂直磁记录层的容易磁化轴垂直于所述衬底取向，所述垂直磁记录层包括磁性结晶颗粒和包围所述磁性结晶颗粒的晶界，其中晶界包含硅的氧化物和选自Li，Na，K，Rb，Cs，Ca，Sr和Ba中的至少一种元素，并且Si，Li，垂直磁记录层中的Na，K，Rb，Cs，Ca，Sr和Ba不小于1mol％且不大于20mol％。

5. 发明申请

WO2004064048A2 MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING THEREFOR, AND MAGNETIC READ/WRITE APPARATUS 审中-公开
标题翻译：磁记录介质，其制造方法和磁读取装置
公开(公告)号：WO2004064048A2
公开(公告)日：2004-07-29
申请号：PCT/JP2004/000205
申请日：2004-01-14
申请人： SHOWA DENKO K.K. , KABUSHIKI KAISHA TOSHIBA , SHIMIZU, Kenji , SAKAWAKI, Akira , KOBAYASHI, Kazuo , NGUYEN, Tien, Duong , SAKAI, Hiroshi , HIKOSAKA, Takashi , OIKAWA, Soichi , MAEDA, Tomoyuki , NAKAMURA, Futoshi
发明人： SHIMIZU, Kenji , SAKAWAKI, Akira , KOBAYASHI, Kazuo , NGUYEN, Tien, Duong , SAKAI, Hiroshi , HIKOSAKA, Takashi , OIKAWA, Soichi , MAEDA, Tomoyuki , NAKAMURA, Futoshi
IPC分类号： G11B5/64
CPC分类号： G11B5/667 , G11B5/65 , G11B5/656 , G11B5/7325 , G11B5/8404
摘要： A soft magnetic undercoat film, a first undercoat film, a second undercoat film, a perpendicular magnetic recording film, and a protective film are provided on a non-magnetic substrate, and the first undercoat film consists of Pt, Pd, or an alloy including at least one among these, and the second undercoat film consists of Ru or an Ru alloy.
摘要翻译：在非磁性基板上设置软磁性底涂层，第一底涂膜，第二底涂膜，垂直磁记录膜和保护膜，第一底涂层由Pt，Pd或包含其中至少一个，第二底涂膜由Ru或Ru合金组成。

6. 发明申请

WO2004090874A1 MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCING THEREOF, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS. 审中-公开
标题翻译：磁记录介质，其制造方法以及磁记录和再现装置。
公开(公告)号：WO2004090874A1
公开(公告)日：2004-10-21
申请号：PCT/JP2004/004994
申请日：2004-04-07
申请人： SHOWA DENKO K. K. , KABUSHIKI KAISHA TOSHIBA , SAKAWAKI, Akira , SHIMIZU, Kenji , KOBAYASHI, Kazuo , SAKAI, Hiroshi , OIKAWA, Soichi , IWASAKI, Takeshi , MAEDA, Tomoyuki , NAKAMURA, Futoshi
发明人： SAKAWAKI, Akira , SHIMIZU, Kenji , KOBAYASHI, Kazuo , SAKAI, Hiroshi , OIKAWA, Soichi , IWASAKI, Takeshi , MAEDA, Tomoyuki , NAKAMURA, Futoshi
IPC分类号： G11B5/66
CPC分类号： G11B5/656 , G11B5/65 , G11B5/66
摘要： A magnetic recording medium which is provided on a nonmagnetic substrate 1 with at least an orientation-controlling layer 3 for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer 4 having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate 1, and a protective layer 5 and characterized in that the perpendicularly magnetic layer 4 includes two or more magnetic layers, that at least one of the magnetic layers is a layer 4a having Co as a main component and containing Pt as well and containing an oxide and that at least another of the magnetic layers is a layer 4b having Co as a main component and containing Cr as well and containing no oxide.
摘要翻译：一种磁性记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层3的非磁性基板1上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层4 1和保护层5，其特征在于，垂直磁性层4包括两个或多个磁性层，至少一个磁性层是具有Co作为主要成分并且含有Pt并且含有氧化物的层4a 并且至少另一个磁性层是具有Co作为主要成分并且含有Cr并且不含氧化物的层4b。

7. 发明申请

WO2008026610A1 METHOD FOR MANUFACTURE OF MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCTION DEVICE 审中-公开
标题翻译：磁记录介质和磁记录和再现装置的制造方法
公开(公告)号：WO2008026610A1
公开(公告)日：2008-03-06
申请号：PCT/JP2007/066697
申请日：2007-08-22
申请人： SHOWA DENKO K.K. , FUKUSHIMA, Masato , SAKAWAKI, Akira , HIROSE, Katsumasa
发明人： FUKUSHIMA, Masato , SAKAWAKI, Akira , HIROSE, Katsumasa
IPC分类号： G11B5/85 , G11B5/65 , G11B5/82
CPC分类号： G11B5/855
摘要： A method for manufacturing a magnetic recording medium includes the steps of depositing a magnetic layer on at least one of surfaces of a nonmagnetic substrate and injecting atoms partially in the magnetic layer, thereby demagnetizing parts having admitted the injected atoms or imparting amorphousness thereto, to form a magnetically separated magnetic recording pattern. The step of injecting includes the steps of applying resist to the at least one surface subsequent to the step of depositing, partially decreasing a thickness of the resist and irradiating a surface of the resist with atoms, thereby inducing partial injection of the atoms to the magnetic layer through portions of the resist decreased in thickness.
摘要翻译：一种制造磁记录介质的方法包括以下步骤：在非磁性基板的至少一个表面上沉积磁性层，并将原子部分地注入到磁性层中，从而使承载了注入原子的部分或赋予其无定形的部件退磁，形成磁分离磁记录图案。注入步骤包括以下步骤：在沉积步骤之后，将抗蚀剂施加到至少一个表面，部分地减小抗蚀剂的厚度并用原子照射抗蚀剂的表面，由此引起原子部分注入到磁体抗蚀剂层的一部分厚度减小。

8. 发明申请

WO2008069082A1 METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS 审中-公开
标题翻译：制造磁记录介质和磁记录和再现装置的方法
公开(公告)号：WO2008069082A1
公开(公告)日：2008-06-12
申请号：PCT/JP2007/072994
申请日：2007-11-21
申请人： SHOWA DENKO K.K. , FUKUSHIMA, Masato , SAKAWAKI, Akira
发明人： FUKUSHIMA, Masato , SAKAWAKI, Akira
IPC分类号： G11B5/84 , C23C14/48 , G11B5/65 , G11B5/851 , H01F41/16 , H01F41/32
CPC分类号： G11B5/855 , C23C14/0005 , C23C14/48 , H01F41/34
摘要： A method for manufacturing a magnetic recording medium (30) having magnetically separate magnetic recording patterns on at least one surface of a nonmagnetic substrate (1), includes the steps of forming a magnetic layer (2) on the nonmagnetic substrate, forming a mask layer (3) on the magnetic layer, forming a resist layer (4) on the mask layer, transferring negative patterns of the magnetic recording patterns to the resist layer using a stamp (5), removing portions of the mask layer which correspond to the negative patterns of the magnetic recording patterns, implanting ions in the magnetic layer from a resist layer-side surface to partly demagnetize the magnetic layer, and removing the resist layer and the mask layer. A magnetic recording and reproducing apparatus includes the above magnetic recording medium (30), a driving section (11) that drives the magnetic recording medium in a recording direction, a magnetic head (27) including a recording section and a reproducing section, a device (28) for moving the magnetic head relative to the magnetic recording medium, and recording and reproducing signal processing device (29) for inputting a signal to the magnetic head and reproducing an output signal from the magnetic head.
摘要翻译：一种制造在非磁性基板（1）的至少一个表面上具有磁性分离的磁记录图案的磁记录介质（30）的方法包括以下步骤：在非磁性基板上形成磁性层（2），形成掩模层（3）在磁性层上，在掩模层上形成抗蚀剂层（4），使用印模（5）将磁记录图案的负图案转印到抗蚀剂层上，去除对应于阴性的掩模层的部分磁记录图案的图案，从抗蚀剂层侧表面在磁性层中注入离子以使磁性层部分地退磁，以及去除抗蚀剂层和掩模层。磁记录和再现装置包括上述磁记录介质（30），驱动磁记录介质在记录方向上的驱动部分（11），包括记录部分和再现部分的磁头（27）（28），用于相对于磁记录介质移动磁头;以及记录和再现用于向磁头输入信号并再现来自磁头的输出信号的信号处理装置（29）。

9. 发明申请

WO2007097438A1 MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCTION THEREOF, AND MAGNETIC RECORDING AND REPRODUCING DEVICE 审中-公开
标题翻译：磁记录介质，其生产方法及磁记录和再现装置
公开(公告)号：WO2007097438A1
公开(公告)日：2007-08-30
申请号：PCT/JP2007/053449
申请日：2007-02-19
申请人： SHOWA DENKO K.K. , FUKUSHIMA, Masato , SAKAWAKI, Akira , SASAKI, Yasumasa
发明人： FUKUSHIMA, Masato , SAKAWAKI, Akira , SASAKI, Yasumasa
IPC分类号： G11B5/85 , G11B5/65
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/865
摘要： A discrete track-type magnetic recording medium (30) includes a nonmagnetic substrate (1), a magnetic recording track and a servo signal pattern that are provided on at least one side of the nonmagnetic substrate and a part (4) nonmagnetized through implantation (7) of ions from above a mask (6) having a shape of a pattern expected to be separated for physically separating the magnetic recording track and the servo signal pattern. A magnetic recording and reproducing device includes the magnetic recording medium (30), a driving part (26) serving to drive the magnetic recording medium in a direction of recording, a magnetic head (27) composed of a recording part and a reproducing part, means (28) to impart motion to the magnetic head relative to the magnetic recording medium and recording and reproducing signal processing means (29) for entering a signal into the magnetic head and reproducing an output signal from the magnetic head.
摘要翻译：离散轨道型磁记录介质（30）包括设置在非磁性基板的至少一侧上的非磁性基板（1），磁记录轨道和伺服信号图案以及通过植入（非磁性基板）非磁性的部分（4） 7）离子，其具有预期要分离的图案的形状的掩模（6），用于物理分离磁记录轨道和伺服信号图案。磁记录和再现装置包括磁记录介质（30），用于在记录方向上驱动磁记录介质的驱动部分（26），由记录部分和再现部分组成的磁头（27）用于使磁头相对于磁记录介质运动的装置（28），以及用于将信号输入磁头并再现来自磁头的输出信号的信号处理装置（29）。

10. 发明申请

WO2007094481A1 MAGNETIC RECORDING MEDIUM5 METHOD FOR PRODUCTION THEREOF AND MAGNETIC RECORDING AND REPRODUCING DEVICE 审中-公开
标题翻译：磁记录介质5及其生产方法及磁记录和再现装置
公开(公告)号：WO2007094481A1
公开(公告)日：2007-08-23
申请号：PCT/JP2007/052901
申请日：2007-02-13
申请人： SHOWA DENKO K.K. , FUKUSHIMA, Masato , SAKAWAKI, Akira , SASAKI, Yasumasa
发明人： FUKUSHIMA, Masato , SAKAWAKI, Akira , SASAKI, Yasumasa
IPC分类号： G11B5/84 , G11B5/65 , G11B5/82
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/865
摘要： A discrete track-type magnetic recording medium (30) includes a nonmagnetic substrate (1), a magnetic recording track and a servo signal pattern which are provided on at least one side of the nonmagnetic substrate, and a nonmagnetic part (4) consisting of a nonmagnetic alloy containing Si for physically separating the magnetic recording track and the servo signal pattern. A magnetic recording and reproducing device comprising, in combination, the magnetic recording medium (30), a driving part (26) serving to drive the magnetic recording medium in a direction of recording, a magnetic head (27) composed of a recording part and a reproducing part, a device (28) to impart motion to the magnetic head relative to the magnetic recording medium, and a recording and reproducing signal processing device (29) for entering a signal into the magnetic head and reproducing an output signal from the magnetic head.
摘要翻译：离散轨道型磁记录介质（30）包括设置在非磁性基板的至少一侧的非磁性基板（1），磁记录轨道和伺服信号图案，以及由非磁性基板构成的非磁性部分（4）含有用于物理分离磁记录轨道和伺服信号模式的Si的非磁性合金。一种磁记录和再现装置，包括磁记录介质（30），用于在记录方向上驱动磁记录介质的驱动部分（26），由记录部分组成的磁头（27）和再现部分，用于相对于磁记录媒体向磁头施加运动的装置（28）;以及记录和再现信号处理装置（29），用于将信号输入磁头并再现来自磁性的输出信号头。

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