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11. 发明专利

JP2003173511A MAGNETIC RECORDING MEDIUM, METHOD FOR MANUFACTURING THE SAME AND MAGNETIC RECORDING DEVICE 审中-公开
公开(公告)号：JP2003173511A
公开(公告)日：2003-06-20
申请号：JP2001368485
申请日：2001-12-03
申请人： HITACHI MAXELL
发明人： KANDA TETSUNORI , INABA NOBUYUKI , YAMANAKA HIDEAKI , FUJITA SHIOJI , MATSUNUMA SATORU
IPC分类号： G11B5/64 , G11B5/65 , G11B5/667 , G11B5/73 , G11B5/738 , G11B5/851 , H01F10/16
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium with high recording density having excellent thermal stability and reduced noises. SOLUTION: The magnetic recording medium 100 has a first orientation controlling layer 2, second orientation controlling layer 4, soft magnetic layer 6, nonmagnetic layer 8, recording layer 12 and carbon protective layer 14 on a substrate 1. The recording layer 12 is made of a L1 0 regular alloy phase showing ferromagnetism and a FePt 3 regular alloy phase showing paramagnetism. Thereby, the magnetic coupling force affecting between the L1 0 regular alloy phases is cut by the paramagnetic FePt 3 regular alloy phase and the magnetic interaction between the L1 0 regular alloy phases is decreased to reduce the noise. By using the L1 0 regular alloy having high crystal magnetic anisotropy for the recording layer 12, the medium has excellent thermal stability and is capable of high density recording. COPYRIGHT: (C)2003,JPO

12. 发明专利

JP2002352407A MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING DEVICE 审中-公开
公开(公告)号：JP2002352407A
公开(公告)日：2002-12-06
申请号：JP2001260571
申请日：2001-08-30
申请人： HITACHI MAXELL
发明人： YAMANAKA HIDEAKI , INABA NOBUYUKI , KANDA TETSUNORI , FUJITA SHIOJI , MATSUNUMA SATORU , TAKEUCHI TERUAKI
IPC分类号： G11B5/66 , G11B5/64 , G11B5/65 , G11B5/673 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium for high density recording that is excellent in thermal stability. SOLUTION: An in-plane magnetic recording medium 10 is provided with a first NiAl base layer 2, a second CrMo base layer 4, a CoPt ferromagnetic atom rich layer 6, a Ru magnetic coupling layer 12, a CoCrPtB recording layer 16, and a carbon protective layer 18 on a substrate 20. The magnetic coupling layer 12 brings about the exchange coupling force between the recording layer 16 and the ferromagnetic atom rich layer 6. Since ferromagnetic atom concentration in the ferromagnetic atom rich layer is higher than that of the recording layer 16, the exchange coupling which acts between the ferromagnetic atom rich layer and recording layer are enhanced remarkably. It is possible thereby to provide the magnetic recording device that is excellent in the thermal stability and in the recording stability over a long period of the magnetic recording medium.

13. 发明专利

JP2002334415A MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE 失效
公开(公告)号：JP2002334415A
公开(公告)日：2002-11-22
申请号：JP2001133878
申请日：2001-05-01
申请人： HITACHI MAXELL
发明人： SAKAMOTO HARUMI , MATSUNUMA SATORU , YANO AKIRA , TAKAYAMA TAKANOBU , KONUMA TAKESHI , BABA MASAHIKO , TAKEUCHI TERUAKI , FUJITA SHIOJI
IPC分类号： G11B5/667 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/673 , G11B5/738 , H01F10/08 , H01F10/16
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium which exhibits excellent thermal stability in the recording magnetic domain where high density recording is carried out and of which the information can be reproduced with low noise and high S/N. SOLUTION: The magnetic recording medium is provided with an intrasurface soft magnetism layer 3, a perpendicular soft magnetism layer 4 and a recording layer 5 on a substrate 1. The magnetic flux from a recording magnetic domain 15 of the recording layer 5 first becomes aslant in the perpendicular soft magnetism layer 4, and is then oriented to an intrasurface direction in the intrasurface soft magnetism layer 3. Thus a magnetic loop of a horseshoe shape is easily formed between the intrasurface magnetism layer 3 and the recording layer 5. Consequently, the recording magnetic domain of the recording layer 5 is more stabilized than before. Furthermore, since the magnetic fluctuation of the intrasurface magnetism layer 3 is reduced and noise is made smaller, information can be reproduced with high S/N.

14. 发明专利

JP2007200466A Perpendicular magnetic recording medium and its manufacturing method 审中-公开
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：JP2007200466A
公开(公告)日：2007-08-09
申请号：JP2006018575
申请日：2006-01-27
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： FUJITA SHIOJI , MATSUNUMA SATORU , SUGIYAMA TOSHINORI , OGANO YORIYUKI
IPC分类号： G11B5/73 , G11B5/64 , G11B5/65 , G11B5/667 , G11B5/82 , G11B5/84 , G11B5/851 , G11B5/852
摘要： PROBLEM TO BE SOLVED: To increase the mass productivity of discrete track type perpendicular magnetic recording media capable of achieving a high track density by suppressing magnetic interference between tracks.
SOLUTION: This perpendicular magnetic recording medium is provided with a substrate having predetermined concave and convex patterns formed on its surface, a soft magnetic lining layer formed on the concave and convex patterns of the substrate, and a magnetic recording layer formed on the soft magnetic lining layer. A relation of d2
摘要翻译：要解决的问题：通过抑制轨道之间的磁干扰，提高能够实现高轨道密度的离散轨道型垂直磁记录介质的批量生产率。解决方案：该垂直磁记录介质设置有在其表面上形成有预定的凹凸图案的基板，形成在基板的凹凸图案上的软磁衬层和形成在基板上的磁记录层软磁衬层。形成在基板上的凹凸图形的凹部的深度d，软磁性衬里层的膜厚度d1和磁记录层的膜厚度d2之间建立了d2

15. 发明专利

JP2006202451A Magnetic recording medium and its manufacturing method 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：JP2006202451A
公开(公告)日：2006-08-03
申请号：JP2005015857
申请日：2005-01-24
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： YANO AKIRA , KANDA TETSUNORI , MATSUNUMA SATORU
IPC分类号： G11B5/65 , G11B5/64 , G11B5/72 , G11B5/738 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium wherein recording can be satisfactorily performed by using only a magnetic head and which is provided with a FePt regular alloy film having excellent thermal stability and perpendicular magnetic characteristics as a recording layer.
SOLUTION: In the magnetic recording medium provided with an under layer consisting essentially of Fe and O, the recording layer formed on the under layer and consisting essentially of an FePt alloy and a coercive force controlling layer formed on the recording layer and consisting essentially of SiO
2 , crystals of the recording layer are oriented perpendicularly to a film surface.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种磁记录介质，其中通过仅使用磁头可以令人满意地执行记录，并且具有作为记录层的具有优异的热稳定性和垂直磁特性的FePt常规合金膜。解决方案：在设置有基本上由Fe和O组成的底层的磁记录介质中，记录层形成在底层上，并且基本上由FePt合金和形成在记录层上的矫顽力控制层组成，基本上由SiO 2 ，记录层的晶体垂直于膜表面取向。版权所有（C）2006，JPO＆NCIPI

16. 发明专利

JP2006004461A Magnetic recording medium and magnetic recording apparatus 审中-公开
标题翻译：磁记录介质和磁记录装置
公开(公告)号：JP2006004461A
公开(公告)日：2006-01-05
申请号：JP2004176421
申请日：2004-06-15
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KANDA TETSUNORI , YANO AKIRA , MATSUNUMA SATORU
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/73 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium wherein high density recording with high magnetostatic characteristics and low medium noise can be performed to a substrate which can not be heated and to provide a magnetic recording apparatus provided with the same.
SOLUTION: A cover layer and a Ru under layer are formed on a flexible substrate and then a CoPtCr alloy magnetic film containing an oxide and a protective layer are sequentially formed.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种磁记录介质，其中可以对不能加热的基板执行具有高静磁特性和低介质噪声的高密度记录，并提供具有该磁记录介质的磁记录装置。解决方案：在柔性基板上形成覆盖层和Ru下层，然后依次形成含有氧化物和保护层的CoPtCr合金磁性膜。版权所有（C）2006，JPO＆NCIPI

17. 发明专利

JP2006004460A Method for manufacturing magnetic recording medium 审中-公开
标题翻译：制造磁记录介质的方法
公开(公告)号：JP2006004460A
公开(公告)日：2006-01-05
申请号：JP2004176420
申请日：2004-06-15
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： YANO AKIRA , KANDA TETSUNORI , MATSUNUMA SATORU
IPC分类号： G11B5/851 , G11B5/64
摘要： PROBLEM TO BE SOLVED: To provide a simple method for preferentially orienting the c-axis of an FePt ordered alloy film having high magnetic anisotropy in the direction perpendicular to the film plane, and to provide a method for manufacturing a high-density magnetic recording medium superior in thermal stability and perpendicular magnetic characteristics.
SOLUTION: In the method for manufacturing the magnetic recording medium, a layer having the main components of Fe and O, a layer having the main component of Fe, and a layer having the main component of Pt are formed so as to be stacked in this order and the stacked films are then heated to a prescribed temperature so that the Fe and the Pt are alloyed by the mutual diffusion between the layer having the main component of Fe and the layer having the main component of Pt, thereby obtaining the FePt ordered alloy film in which the c-axis of the ordered alloy film is preferentially oriented in the direction perpendicular to the film plane.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在垂直于膜平面的方向上优先取向具有高磁各向异性的FePt有序合金膜的c轴的简单方法，并且提供一种用于制造高密度磁性记录介质，其热稳定性和垂直磁特性均优异。解决方案：在制造磁记录介质的方法中，形成主要成分为Fe和O的层，主要成分为Fe的层和具有Pt主要成分的层，以便然后将堆叠的薄膜加热至规定的温度，使Fe和Pt通过Fe主体的层与Pt主要成分的层之间的相互扩散而合金化，得到 FePt有序合金膜，其中有序合金膜的c轴优先在垂直于膜平面的方向上取向。版权所有（C）2006，JPO＆NCIPI

18. 发明专利

JP2005251234A Magnetic recording medium and magnetic recording apparatus 有权
标题翻译：磁记录介质和磁记录装置
公开(公告)号：JP2005251234A
公开(公告)日：2005-09-15
申请号：JP2004055782
申请日：2004-03-01
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KANDA TETSUNORI , YAMANAKA HIDEAKI , YANO AKIRA , MATSUNUMA SATORU
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/667 , H01F10/16 , H01F10/30
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium having high magnetostatic characteristics and excellent recording characteristics and to provide a magnetic recording apparatus equipped with the same.
SOLUTION: The high density magnetic recording medium is provided with: a soft magnetic lining layer formed by using a soft magnetic material; a first lattice plane interval controlling layer formed by using Ru or an alloy mainly made up of Ru; an intermediate layer formed from metal or an alloy having a face-centered cubic crystal structure; a second lattice plane interval controlling layer formed by using Ru or an alloy mainly made up of Ru; a recording layer formed by using a CoPtCr alloy magnetic film containing an oxide; and a protective layer on a non-magnetic substrate.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高静磁特性和优异的记录特性的磁记录介质，并提供配备该磁记录介质的磁记录装置。解决方案：高密度磁记录介质设有：使用软磁材料形成的软磁衬层; 通过使用Ru或主要由Ru构成的合金形成的第一晶格面间隔控制层; 由具有面心立方晶体结构的金属或合金形成的中间层; 通过使用Ru或主要由Ru构成的合金形成的第二格子层间隔控制层; 通过使用含有氧化物的CoPtCr合金磁性膜形成的记录层; 以及非磁性基板上的保护层。版权所有（C）2005，JPO＆NCIPI

19. 发明专利

JP2005158094A Magnetic recording medium and magnetic storage device 审中-公开
标题翻译：磁记录介质和磁存储器件
公开(公告)号：JP2005158094A
公开(公告)日：2005-06-16
申请号：JP2003390772
申请日：2003-11-20
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： YANO AKIRA , YAMANAKA HIDEAKI , KANDA TETSUNORI , MATSUNUMA SATORU
IPC分类号： G11B5/673 , G11B5/667 , G11B5/738 , H01F10/16 , H01F41/18
摘要： PROBLEM TO BE SOLVED: To provide an artificial grating multilayered film medium having high recording performance and a high S/N ratio even when a thin soft magnetic layer having ≤100 nm thickness is formed and to provide a magnetic storage device using the medium and having high recording performance and a high S/N ratio.
SOLUTION: The magnetic recording medium formed by laminating at least the soft magnetic layer, an intermediate layer and a recording layer to be a multilayered film structure wherein Co and Pd are alternately laminated successively on a non-magnetic substrate is characterized in that the soft magnetic layer has ≤100 nm thickness and the intermediate layer consists of Pd, Co and B.
COPYRIGHT: (C)2005,JPO&NCIPI

20. 发明专利

JP2005141825A Magnetic recording medium and magnetic recording device 审中-公开
标题翻译：磁记录介质和磁记录装置
公开(公告)号：JP2005141825A
公开(公告)日：2005-06-02
申请号：JP2003376489
申请日：2003-11-06
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KANDA TETSUNORI , YAMANAKA HIDEAKI , YANO AKIRA , MATSUNUMA SATORU
IPC分类号： G11B5/65 , G11B5/64
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium, having high magnetostatic characteristics and capable of recording with low medium noise and high-density, and to provide a magnetic recording device equipped with the same.
SOLUTION: This high-density magnetic recording medium is constructed, in such a manner that an adhesive layer provided on a nonmagnetic substrate, a soft magnetic layer and a foundation layer are formed, and then a CoPtCr alloy magnetic film containing an oxide and a protective layer are formed sequentially on the nonmagnetic substrate. A recording layer is constituted of a CoPtCr alloy magnetic film containing an oxide, in which oxide concentration in the magnetic film is continuously reduced from a substrate direction toward the film surface direction.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高静电特性并能够以低中等噪声和高密度记录的磁记录介质，并提供配备该磁记录介质的磁记录装置。解决方案：该高密度磁记录介质以这样的方式构成，即，形成设置在非磁性基底，软磁性层和基底层上的粘合剂层，然后形成含有氧化物的CoPtCr合金磁性膜并且在非磁性基板上依次形成保护层。记录层由包含氧化物的CoPtCr合金磁性膜构成，其中磁性膜中的氧化物浓度从衬底方向朝向膜表面方向连续地减小。版权所有（C）2005，JPO＆NCIPI

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