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31.发明授权公开(公告)号：US07083870B2
公开(公告)日：2006-08-01
申请号：US10617822
申请日：2003-07-14
CPC分类号： G11B5/667 , G11B5/65 , G11B5/7325 , G11B2005/0029
摘要： A magnetic recording medium includes a nonmagnetic substrate on which is provided at least a soft magnetic under-film, an orientation control film that controls an orientation of a film directly above, a perpendicular magnetic recording film having an axis of easy magnetization oriented to be mainly perpendicular to the substrate and a protective film, wherein the orientation control film has a material composition forming a C11b structure. The magnetic recording medium is manufactured by a method including carrying out, in order, at least a step of forming a soft magnetic under-film on a nonmagnetic substrate, a step of forming an orientation control film that controls an orientation of a film directly above, a step of forming a perpendicular magnetic recording film having an axis of easy magnetization oriented to be mainly perpendicular to the substrate, and a step of forming a protective film. A magnetic recording and reproduction apparatus includes the magnetic recording medium and a magnetic head that records and reproduces information on the magnetic recording medium, wherein the magnetic head is a magnetic monopole head.
摘要翻译： 磁记录介质包括至少设置有软磁性底膜的非磁性基板，控制正上方的膜的取向的取向控制膜，具有容易磁化的轴的垂直磁记录膜主要取向为 垂直于基底和保护膜，其中取向控制膜具有形成C 11 B 17结构的材料组合物。 该磁记录介质是通过以下方法制造的，该方法包括以下步骤：至少在非磁性基板上形成软磁性底膜的步骤，形成控制膜直接定向的取向控制膜的步骤 形成具有易于磁化的轴取向为主要垂直于基板的垂直磁记录膜的步骤和形成保护膜的步骤。 磁记录和再现装置包括磁记录介质和在磁记录介质上记录和再现信息的磁头，其中磁头是磁单极头。
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32.发明授权公开(公告)号：US06805981B2
公开(公告)日：2004-10-19
申请号：US09902688
申请日：2001-07-12
申请人： Hideo Ogiwara , Takashi Hikosaka , Soichi Oikawa , Hiroshi Sakai , Kenji Shimizu
发明人： Hideo Ogiwara , Takashi Hikosaka , Soichi Oikawa , Hiroshi Sakai , Kenji Shimizu
IPC分类号： G11B566
CPC分类号： G11B5/66 , Y10S428/90
摘要： A perpendicular magnetic recording medium comprising a layer exhibiting a super paramagnetism is used as the underlying film to enable the recording medium to achieve a high density recording with a low noise.
摘要翻译： 使用包含表现出超顺磁性的层的垂直磁记录介质作为底层膜，使得记录介质能够实现低噪声的高密度记录。
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33.发明授权公开(公告)号：US06818331B2
公开(公告)日：2004-11-16
申请号：US10228952
申请日：2002-08-28
申请人： Akira Sakawaki , Kenji Shimizu , Hiro Mochizuki , Masato Kokubu , Hui Yang , Masakazu Kobayashi , Hiroshi Sakai
发明人： Akira Sakawaki , Kenji Shimizu , Hiro Mochizuki , Masato Kokubu , Hui Yang , Masakazu Kobayashi , Hiroshi Sakai
IPC分类号： G11B566
CPC分类号： G11B5/656 , G11B5/66 , G11B5/851 , Y10S428/90
摘要： A magnetic recording medium having a non-magnetic substrate; an orientation-regulating layer for regulating the crystal orientation of a layer provided directly thereon; a perpendicular magnetic layer in which easy-magnetization axes are oriented generally perpendicular to the substrate; and a protective layer is disclosed. The perpendicular magnetic layer is formed from a material containing Co as a primary component and at least Cr, Pt, and Nd. A process to produce the magnetic recording medium and a magnetic recording and reproducing apparatus are also disclosed.
摘要翻译： 一种具有非磁性基片的磁记录介质; 用于调节直接设置在其上的层的晶体取向的取向调节层; 易磁化轴大致垂直于基板定向的垂直磁性层; 并且公开了保护层。 垂直磁性层由含有Co作为主要成分并且至少包含Cr，Pt和Nd的材料形成。 还公开了制造磁记录介质的过程和磁记录和再现装置。
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34.发明授权公开(公告)号：US06677061B2
公开(公告)日：2004-01-13
申请号：US10152675
申请日：2002-05-23
申请人： Kenji Shimizu , Akira Sakawaki , Hiroshi Sakai
发明人： Kenji Shimizu , Akira Sakawaki , Hiroshi Sakai
IPC分类号： G11B566
CPC分类号： G11B5/667 , G11B5/7325 , G11B5/8404 , Y10S428/90
摘要： A magnetic recording medium exhibiting excellent recording and reproduction characteristics is disclosed. A magnetic recording medium includes a non-magnetic substrate 1; a soft magnetic undercoat film 2; an orientation-regulating film 3; a perpendicular magnetic film 4; and a protective film 5, the films being formed on the substrate 1. The soft magnetic undercoat film 2 contains a material represented by the following composition: aFe-bCo-cM-dX1-fN where M is one or more elements selected from Ti, Zr, Nb, Hf, Ta, V, and Mo; X1 is one or more elements selected from Cr, Ga, Al, Si, and Ni; and a, b, c, d, and f represent atomic percentages and satisfy the following relations: 60≦a+b≦90, 30≦a≦90, 5≦c≦20, 0.1≦d≦7, and 3≦f≦30.
摘要翻译： 公开了一种表现出良好记录和再现特性的磁记录介质。 磁记录介质包括非磁性基板1; 软磁性底涂膜2; 取向调节膜3; 垂直磁性膜4; 和保护膜5，膜形成在基板1上。软磁性底涂层2含有由以下组成表示的材料：其中M是选自Ti，Zr，Nb，Hf，Ta，V中的一种或多种元素 ，和Mo X1是选自Cr，Ga，Al，Si和Ni中的一种或多种元素; 和a，b，c，d和f表示原子百分数，并满足以下关系：60 <= a + b <= 90,30 <= a <= 90,5 <= c <= 20,0.1 <= d <= 7，3 <= F＆LE; 30。
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35.发明申请Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus 审中-公开磁记录介质，其制造方法以及磁记录和重放装置公开(公告)号：US20050037140A1
公开(公告)日：2005-02-17
申请号：US10953536
申请日：2004-09-30
申请人： Akira Sakawaki , Kenji Shimizu , Hiro Mochizuki , Masato Kokubu , Hui Yang , Masakazu Kobayashi , Hiroshi Sakai
发明人： Akira Sakawaki , Kenji Shimizu , Hiro Mochizuki , Masato Kokubu , Hui Yang , Masakazu Kobayashi , Hiroshi Sakai
CPC分类号： G11B5/656 , G11B5/66 , G11B5/851 , Y10S428/90
摘要： A magnetic recording medium having a non-magnetic substrate; an orientation-regulating layer for regulating layer for regulating the crystal orientation of a layer provided directly thereon; a perpendicular magnetic layer in which easy-magnetization axes are oriented generally perpendicular to the substrate; and a protective layer is disclosed. The perpendicular magnetic layer is formed from a material containing Co as a primary component and at least Cr, Pt, and Nd. A process to produce the magnetic recording medium and a magnetic recording and reproducing apparatus are also disclosed.
摘要翻译： 一种具有非磁性基片的磁记录介质; 用于调节直接设置在其上的层的晶体取向的调节层的取向调节层; 易磁化轴大致垂直于基板定向的垂直磁性层; 并且公开了保护层。 垂直磁性层由含有Co作为主要成分并且至少包含Cr，Pt和Nd的材料形成。 还公开了制造磁记录介质的过程和磁记录和再现装置。
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36.发明授权公开(公告)号：US07166375B2
公开(公告)日：2007-01-23
申请号：US10029204
申请日：2001-12-28
摘要： A magnetic recording medium, a method for producing the same, and a magnetic recording and reproducing device are provided which can prevent spike noise and improve the error rate. The magnetic recording medium comprises at least one nonmagnetic substrate, a soft magnetic underlayer, an orientation control layer to control the orientation of the layer formed directly above the same, and a perpendicular magnetic layer having an axis of easy magnetization which is oriented mainly perpendicularly to the nonmagnetic substrate. The soft magnetic underlayer is formed with a multilayer structure having at least two soft magnetic layers and one or more separation layers interposed between the soft magnetic layers, and at least one of the soft magnetic layers comprises a material with a structure having no magnetic domain walls.
摘要翻译： 提供了一种磁记录介质，其制造方法和磁记录和再现装置，其可以防止尖峰噪声并提高误码率。 磁记录介质包括至少一个非磁性衬底，软磁性底层，用于控制其正上方形成的层的取向的取向控制层以及具有易于磁化的轴的垂直磁性层，其主要垂直于 非磁性基板。 软磁性底层形成为具有至少两个软磁性层和插入在软磁性层之间的一个或多个分离层的多层结构，并且至少一个软磁性层包括具有不具有磁畴壁的结构的材料 。
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37.发明申请Magnetic recording medium, method of producing the same and magnetic recording and reproducing device 审中-公开磁记录介质及其制造方法及磁记录再生装置公开(公告)号：US20070111035A1
公开(公告)日：2007-05-17
申请号：US11594769
申请日：2006-11-09
IPC分类号： G11B5/66
摘要： The present invention aims to provide a magnetic recording medium, a method for producing the same, and a magnetic recording and reproducing device which can prevent spike noise and improve the error rate. The present invention provides a magnetic recording medium, a method for producing the same, and a magnetic recording and reproducing device comprising at least one nonmagnetic substrate, a soft magnetic underlayer 2, an orientation control layer to control the orientation of the layer formed directly above the same, and a perpendicular magnetic layer having an axis of easy magnetization which is oriented mainly perpendicularly to the nonmagnetic substrate, and the soft magnetic underlayer 2 is formed with a multilayer structure having soft magnetic layers 21A and 21B, and one or more separation layers 22 interposed between the soft magnetic layers, and at least one of the soft magnetic layers 21A and 21B comprises a material with a structure having no magnetic domain walls.
摘要翻译： 本发明旨在提供一种磁记录介质及其制造方法，以及能够防止尖峰噪声并提高误码率的磁记录和再现装置。 本发明提供一种磁记录介质及其制造方法，以及包括至少一个非磁性基底，软磁性底层2，取向控制层以控制直接在其上形成的层的取向的磁记录和再现装置 以及具有主要垂直于非磁性基板取向的容易磁化轴的垂直磁性层，并且软磁性底层2形成有具有软磁性层21A和21B的多层结构，以及一个或多个 介于软磁性层之间的分离层22以及软磁性层21A和21B中的至少一个包括具有不具有磁畴壁的结构的材料。
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38.发明授权公开(公告)号：US06844046B2
公开(公告)日：2005-01-18
申请号：US10405932
申请日：2003-04-03
申请人： Akira Sakawaki , Masato Kokubu , Ryuji Sakaguchi , Hiroshi Sakai
发明人： Akira Sakawaki , Masato Kokubu , Ryuji Sakaguchi , Hiroshi Sakai
CPC分类号： G11B5/8404 , G11B5/851 , Y10T428/12944 , Y10T428/24355 , Y10T428/265
摘要： An object of the present invention is to provide a process for easily producing a magnetic recording medium exhibiting excellent magnetic characteristics. In the present invention, an orientation-determining film is formed on a non-metallic substrate which has undergone texturing, the orientation-determining film is subjected to oxidation or nitridation, and a non-magnetic undercoat film and a magnetic film are formed on the film.
摘要翻译： 本发明的目的是提供一种易于制造表现出优异的磁特性的磁记录介质的方法。 在本发明中，在经过纹理化的非金属基材上形成取向决定膜，取向决定膜进行氧化或氮化，在该金属基材上形成非磁性底涂膜和磁性膜 电影。
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公开(公告)号：US06815097B2
公开(公告)日：2004-11-09
申请号：US10078659
申请日：2002-02-21
IPC分类号： G11B566
CPC分类号： G11B5/667 , G11B5/656 , G11B5/66 , G11B5/7325 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium comprising a non-magnetic substrate having thereon a non-magnetic underlayer, a magnetic recording layer, a soft magnetic layer and a protective layer, wherein the coercivity is 2,500 Oe or more and the thickness of the soft magnetic layer is from 5 to 50 Å.
摘要翻译： 一种磁记录介质，包括其上具有非磁性底层，磁记录层，软磁性层和保护层的非磁性基板，其中矫顽力为2500Oe以上，软磁性层的厚度为 5至50埃。
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公开(公告)号：US06680133B2
公开(公告)日：2004-01-20
申请号：US09731704
申请日：2000-12-08
IPC分类号： G11B566
CPC分类号： G11B5/7325 , C23C14/3414 , G11B5/851 , Y10S428/90
摘要： A magnetic recording medium comprising a non-metallic substrate, a non-magnetic undercoat film, a magnetic film, and a protective film are formed, wherein an orientation-determining film, which determines crystalline orientation of a film provided directly on the orientation-determining film when subjected to surface-texturing, is formed between the non-metallic substrate and the non-magnetic undercoat film. The orientation-determining film comprises NiPX and X has a melting point of 600-2000° C.
摘要翻译： 形成包括非金属基底，非磁性底涂层，磁性膜和保护膜的磁记录介质，其中确定膜直接在取向决定层上提供的膜的晶体取向的取向决定膜 在非金属基材和非磁性底涂膜之间形成经受表面变形的膜。 取向决定膜包括NiPX，X的熔点为600-2000℃。
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