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31. 发明授权

US07641989B2 Perpendicular magnetic recording medium for high density recording and manufacturing of the same 失效
标题翻译：用于高密度记录和制造的垂直磁记录介质
公开(公告)号：US07641989B2
公开(公告)日：2010-01-05
申请号：US11295005
申请日：2005-12-05
申请人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
发明人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
IPC分类号： G11B5/66
CPC分类号： C23C14/568 , C23C14/025 , C23C14/0658 , C23C14/0688 , C23C14/584 , G11B5/65 , G11B5/732
摘要： Embodiments of the invention provide a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which consists of many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains about 80 at. % Ru or more.
摘要翻译：本发明的实施方案提供了提供高介质S / N和良好耐腐蚀性的介质。根据一个实施例，在依次层叠在基板上的至少包括软磁性底层，种子层，中间层，磁记录层和覆盖层的垂直磁记录介质中，磁记录层具有由CoCrPt合金的许多柱状晶粒和含有氧化物的晶界层组成的粒状结构，种子层由TaNi合金或TaTi合金制成，中间层由含有约80at的Ru或Ru合金制成。％Ru或更多。

32. 发明授权

US07510789B2 Perpendicular magnetic recording media 失效
标题翻译：垂直磁记录介质
公开(公告)号：US07510789B2
公开(公告)日：2009-03-31
申请号：US11148164
申请日：2005-06-09
申请人： Yoshiyuki Hirayama , Hiroyuki Nakagawa , Hiroaki Nemoto , Ichiro Tamai , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Hiroyuki Nakagawa , Hiroaki Nemoto , Ichiro Tamai , Ikuko Takekuma
IPC分类号： G11B5/66
CPC分类号： B82Y10/00 , G11B5/656 , G11B5/66 , G11B5/7325 , G11B5/743 , Y10T428/24802
摘要： A perpendicular magnetic recording medium includes an intermediate film formed of a plurality of layers between a soft magnetic film and a perpendicular magnetization film. The intermediate film includes at least two layers, i.e., an oxygen-containing layer, or a nonmetallic element-containing layer containing nitrogen, silicon or carbon, and a metallic layer formed on a surface side of the oxygen-containing layer or the nonmetallic element-containing layer. The metallic layer includes a plurality of isolated island-shaped structures. Crystal grains of the perpendicular magnetization film are formed so as to correspond to the isolated island-shaped structures. As a result, a high recording density is obtained.
摘要翻译：垂直磁记录介质包括由软磁膜和垂直磁化膜之间的多层形成的中间膜。中间膜包括至少两层，即含氧层或含有氮，硅或碳的非金属元素层，以及在含氧层或非金属元素的表面侧上形成的金属层包含层。金属层包括多个孤立的岛状结构。垂直磁化膜的晶粒形成为对应于孤立的岛状结构。结果，获得高记录密度。

33. 发明申请

US20080186627A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH GRANULAR STRUCTURED MAGNETIC RECORDING LAYER, METHOD FOR PRODUCING THE SAME, AND MAGNETIC RECORDING APPARATUS 审中-公开
标题翻译：具有颗粒结构的磁记录层的周期性磁记录介质，其制造方法和磁记录装置
公开(公告)号：US20080186627A1
公开(公告)日：2008-08-07
申请号：US12061518
申请日：2008-04-02
申请人： Yoshiyuki Hirayama , Ikuko Takekuma , Ichiro Tamai
发明人： Yoshiyuki Hirayama , Ikuko Takekuma , Ichiro Tamai
IPC分类号： G11B5/33 , G11B5/66 , C23C14/34
CPC分类号： G11B5/7325 , C23C14/06 , C23C14/3492 , G11B5/65 , G11B5/851 , Y02T50/67
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium having a granular structured magnetic recording layer including many columnar grains, and grain boundary layers containing oxide, wherein a high medium S/N ratio is obtained while securing head flyability and durability. In an embodiment, the perpendicular magnetic recording medium includes a granular structured magnetic recording layer having many columnar grains, as well as grain boundary layers including oxide respectively. Assuming that the columnar grains are divided equally in the film thickness direction into a protective layer side portion and an intermediate layer side portion, and the diameter of the protective layer side portion is larger than that of the intermediate layer side portion.
摘要翻译：本发明的实施例提供一种垂直磁记录介质，其具有包括许多柱状颗粒的粒状结构磁记录层和含有氧化物的晶界层，其中在确保磁头可飞行性和耐久性的同时获得高介质S / N比。在一个实施例中，垂直磁记录介质包括具有许多柱状晶粒的颗粒结构磁记录层以及分别包括氧化物的晶界层。假设柱状晶粒在膜厚度方向上被均等地分割成保护层侧部分和中间层侧部分，并且保护层侧部分的直径大于中间层侧部分的直径。

34. 发明申请

US20080182134A1 Perpendicular magnetic recording media and magnetic storage apparatus using the same 失效
公开(公告)号：US20080182134A1
公开(公告)日：2008-07-31
申请号：US12079701
申请日：2008-03-27
申请人： Yoshiyuki Hirayama , Yuzuru Hosoe , Hiroyuki Nakagawa , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Yuzuru Hosoe , Hiroyuki Nakagawa , Ikuko Takekuma
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium that not only attains the magnetic isolation of crystal grains in a magnetic recording layer from one another in a region of the medium in which the thickness of an intermediate layer is equal to or smaller than about 20 nm but also exhibits excellent crystallographic texture and that exhibits small medium noise, excellent thermal stability, and high write-ability. In one embodiment, a perpendicular magnetic recording medium has at least a soft-magnetic underlayer, a first intermediate layer, a second intermediate layer, a third intermediate layer, and a magnetic recording layer successively formed on a substrate. The magnetic recording layer is composed of ferromagnetic crystal grains and oxides or nitrides, the third intermediate layer is composed of Ru or an Ru alloy, the second intermediate layer is composed of a metal or an alloy having the face-centered cubic lattice structure, and the first intermediate layer is composed of a metal or an alloy having the hexagonal close-packed structure.

35. 发明授权

US06943814B2 Gradation display method 失效
标题翻译：渐变显示方式
公开(公告)号：US06943814B2
公开(公告)日：2005-09-13
申请号：US10263688
申请日：2002-10-04
申请人： Mitsuru Iioka , Yoshiyuki Hirayama , Noribumi Sato , Takashi Nakajima
发明人： Mitsuru Iioka , Yoshiyuki Hirayama , Noribumi Sato , Takashi Nakajima
IPC分类号： B41J2/52 , B41J2/44 , G03G15/00 , G06T5/00 , H04N1/405
CPC分类号： H04N1/4058
摘要： In a gradation display method, an image is divided into pixels having fine areas, this pixel is furthermore divided into very fine pixels (Si) having very fine areas, and then gradation is displayed based upon a ratio of a colored very fine pixel (Si) with respect to all of very fine pixels (Si) within a pixel. Also, the above-described colored very fine pixel (Si) is formed by both a first growth core which is formed by increasing the number of colored very fine pixels of a single cluster, and a second growth core which is formed by increasing the number of colored very fine pixels of another single cluster.
摘要翻译：在灰度显示方法中，将图像划分为具有精细区域的像素，该像素进一步被划分为具有非常细小区域的非常精细的像素（Si），然后基于彩色非常精细像素（Si ）相对于像素内的所有非常精细的像素（Si）。另外，上述着色非常精细的像素（Si）由通过增加单个簇的有色非常精细的像素的数量形成的第一生长核心和通过增加数量而形成的第二生长核心构成的另一个单一的集群的彩色非常精细的像素。

36. 发明授权

US06916557B2 Perpendicular magnetic recording media 失效
公开(公告)号：US06916557B2
公开(公告)日：2005-07-12
申请号：US10372335
申请日：2003-02-25
申请人： Yoshiyuki Hirayama , Hiroyuki Nakagawa , Hiroaki Nemoto , Ichiro Tamai , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Hiroyuki Nakagawa , Hiroaki Nemoto , Ichiro Tamai , Ikuko Takekuma
IPC分类号： G11B5/65 , B32B3/00 , G11B5/147 , G11B5/64 , G11B5/66 , G11B5/667 , G11B5/70 , G11B5/73 , G11B5/851
CPC分类号： B82Y10/00 , G11B5/656 , G11B5/66 , G11B5/7325 , G11B5/743 , Y10T428/24802
摘要： A perpendicular magnetic recording medium includes an intermediate film formed of a plurality of layers between a soft magnetic film and a perpendicular magnetization film. The intermediate film includes at least two layers, i.e., an oxygen-containing layer, or a nonmetallic element-containing layer containing nitrogen, silicon or carbon, and a metallic layer formed on a surface side of the oxygen-containing layer or the nonmetallic element-containing layer. The metallic layer includes a plurality of isolated island-shaped structures. Crystal grains of the perpendicular magnetization film are formed so as to correspond to the isolated island-shaped structures. As a result, a high recording density is obtained.

37. 发明申请

US20050138796A1 Magnetic recording medium and method for manufacturing the same 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20050138796A1
公开(公告)日：2005-06-30
申请号：US11062652
申请日：2005-02-23
申请人： Yoshio Takahashi , Yotsuo Yahisa , Yoshiyuki Hirayama
发明人： Yoshio Takahashi , Yotsuo Yahisa , Yoshiyuki Hirayama
IPC分类号： G11B5/65 , G11B5/64 , G11B5/667 , G11B5/73 , G11B5/738 , G11B5/84 , B05D5/12 , G11B5/127
CPC分类号： G11B5/732 , G11B5/65 , G11B5/667 , G11B5/7325 , G11B5/8404 , Y10T29/49021 , Y10T29/49025 , Y10T29/49032 , Y10T29/49041 , Y10T29/49044 , Y10T29/49078 , Y10T29/49224 , Y10T428/12465 , Y10T428/12757 , Y10T428/24355 , Y10T428/31
摘要： Disclosed is a magnetic recording medium and a method for manufacturing the same to provide a magnetic recording medium reducing medium noise and having excellent thermal stability. The magnetic recording medium includes a substantially amorphous seed layer and a polycrystal underlayer made of crystal grains having a substantially columnar structure, the polycrystal underlayer contacting thereto. In a boundary between the seed layer and the underlayer, fine grooves having a period up to as large as the magnetic layer crystal grain diameter are formed in the disc circumferential direction. Accordingly, the magnetic recording medium is allowed to have a grain shape with a value obtained by dividing the average grain diameter for the disc circumferential direction by the average grain diameter for the disc radial direction of no less than 0.5 and no more than 0.9, thus achieving simultaneously reduction of the medium noise and thermal stability.
摘要翻译：公开了一种磁记录介质及其制造方法，以提供磁记录介质降低介质噪声并具有优异的热稳定性。磁记录介质包括基本上无定形的种子层和由具有基本上柱状结构的晶粒制成的多晶底层，多晶底层与其接触。在种子层和底层之间的边界处，在盘周向形成有具有与磁性层晶粒直径一样大的周期的细槽。因此，使磁记录介质具有通过将盘圆周方向的平均粒径除以盘径向的平均粒径为不小于0.5且不大于0.9而获得的值的晶粒形状，因此实现中等噪声和热稳定性的同时降低。

38. 发明授权

US06830837B2 Magnetic recording medium and magnetic recording apparatus 失效
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US06830837B2
公开(公告)日：2004-12-14
申请号：US10046987
申请日：2002-01-17
申请人： Tetsuya Kanbe , Hiroyuki Suzuki , Yotsuo Yahisa , Yoshiyuki Hirayama , Hidekazu Kashiwase
发明人： Tetsuya Kanbe , Hiroyuki Suzuki , Yotsuo Yahisa , Yoshiyuki Hirayama , Hidekazu Kashiwase
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/66 , Y10S428/90 , Y10T428/1121 , Y10T428/12465 , Y10T428/12854 , Y10T428/12861
摘要： It is an object of the present invention to provide a high reliability magnetic storage apparatus capable of performing writing and reading back of high density information. The magnetic storage apparatus is so configured as to have a longitudinal magnetic recording medium including: a magnetic layer formed on a non-magnetic substrate via a plurality of underlayers; the magnetic layer including a lower magnetic layer containing Ru in an amount of not less than 3 at % to not more than 30 at %, and Cr in an amount of not less than 0 at % to not more than 18 at %, and further containing at least one of B or C in an amount of not less than 0 at % to not more than 20 at %, and an upper magnetic layer containing Co as a main component disposed thereon via a non-magnetic intermediate layer.
摘要翻译：本发明的目的是提供一种能够执行高密度信息的写入和读回的高可靠性磁存储装置。磁存储装置被配置为具有纵向磁记录介质，其包括：通过多个底层在非磁性基板上形成的磁性层; 所述磁性层包括含有不小于3原子％至不超过30原子％的量的Ru的下磁性层，并且不少于0原子％至不大于18原子％的Cr，含有不小于0at％至不超过20at％的B或C中的至少一个，以及经由非磁性中间层设置在其上的Co作为主要成分的上磁性层。

39. 发明授权

US5375137A Semiconductor laser device featuring group III and IV compounds doped with amphoteric impurity to vary electrical resistance according to direction of crystal plane 失效
标题翻译：半导体激光器件具有掺杂有两性杂质的III和IV族化合物，以根据晶面的方向改变电阻
公开(公告)号：US5375137A
公开(公告)日：1994-12-20
申请号：US932181
申请日：1992-08-21
申请人： Yoshiyuki Hirayama , Hitoshi Shimizu , Sumio Sugata
发明人： Yoshiyuki Hirayama , Hitoshi Shimizu , Sumio Sugata
IPC分类号： H01L21/203 , H01S5/00 , H01S5/223 , H01S5/30 , H01S3/19
CPC分类号： H01L33/305 , H01S5/305 , H01S5/2231 , H01S5/3081
摘要： There is provided a high-quality semiconductor laser device having a current confinement feature along with a method of manufacturing the same in a simple manner. The upper clad layer 4 of a semiconductor laser device is a semiconductive layer made of a compound of elements of the III and V groups doped with an amphoteric impurity substance and the electric resistance of the lateral slopes is greater on the top of the mesa than on the upper clad layer 4 of the mesa. A method of manufacturing a semiconductor laser device comprises a step of repeating a cycle of crystal growth operation of sequentially forming a layer of an element of the III group, a layer of an amphoteric impurity substance and a layer of an element of the V group on said substrate by means of an MBE technique to produce said upper clad layer made of a compound of elements of the III and V groups.
摘要翻译：提供了具有电流限制特征的高质量半导体激光器件及其制造方法。半导体激光器件的上覆层4是由掺杂有两性杂质物质的III族和V族元素的化合物制成的半导电层，并且在台面顶部的横向斜率的电阻大于在台面的上包层4。一种制造半导体激光器件的方法包括以下步骤：重复一个循环的晶体生长操作，顺序地形成III族元素层，两性杂质物质层和V族元素层所述衬底通过MBE技术产生由III族和V族元素的化合物制成的所述上覆层。

40. 发明授权

US08709618B2 Magnetic storage apparatus 有权
标题翻译：磁存储装置
公开(公告)号：US08709618B2
公开(公告)日：2014-04-29
申请号：US11726099
申请日：2007-03-20
申请人： Ikuko Takekuma , Hiroyuki Nakagawa , Hiroaki Nemoto , Yoshiyuki Hirayama
发明人： Ikuko Takekuma , Hiroyuki Nakagawa , Hiroaki Nemoto , Yoshiyuki Hirayama
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/3967 , G11B5/656
摘要： According to embodiments of the present invention, a shielded pole writer and a perpendicular magnetic recording medium suitable thereto are combined to provide high medium SNR and excellent OW characteristic simultaneously. A perpendicular magnetic recording medium of a magnetic storage apparatus mounting a shielded pole writer, including a perpendicular magnetic recording medium having a recording layer of a three layered structure is used. A first recording layer has a granular structure consisting of grain boundaries containing an oxide and columnar grains comprising a CoCrPt alloy, in which a second recording layer and a third recording layer formed thereabove comprise Co as a main ingredient, contain Cr and do not contain an oxide, and the Cr concentration in the second recording layer is lower than the Cr concentration in the third recording layer.
摘要翻译：根据本发明的实施例，组合屏蔽极写入器和适合于其的垂直磁记录介质，以同时提供高中等信噪比和优异的OW特性。使用安装屏蔽极写入器的磁存储装置的垂直磁记录介质，其包括具有三层结构的记录层的垂直磁记录介质。第一记录层具有由包含氧化物的晶界和包含CoCrPt合金的柱状晶粒构成的粒状结构，其中形成在其上的第二记录层和第三记录层包含Co作为主要成分，并且不含有并且第二记录层中的Cr浓度低于第三记录层中的Cr浓度。

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