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公开(公告)号：US4193013A
公开(公告)日：1980-03-11
申请号：US897406
申请日：1978-04-18
摘要： A cathode for an electron source according to this invention comprises an emitter tip made of an electron emissive material, a filament for holding the emitter tip, and a binder for binding the emitter tip and the filament, the filament and the binder being made of glassy carbon. The binder can have a carbide or boride powder incorporated therein. The cathode according to this invention can be produced by using a thermosetting resin of predetermined shape as the starting material of the filament, fixing the emitter tip to a predetermined position of the thermosetting resin with the adhesive agent made of the raw thermosetting resin, and heating the resultant assembly in a non-oxidizing atmosphere to carbonize the resinous portions. This cathode is structurally very simple. Moreover, the adhesion between the filament and the emitter tip is excellent, and the emitter tip can be heated to high temperatures above 2,000.degree. C. by causing current to flow through the cathode.
摘要翻译： 根据本发明的用于电子源的阴极包括由电子发射材料制成的发射极尖端，用于保持发射极尖端的灯丝和用于结合发射极尖端和灯丝的粘合剂，灯丝和粘合剂由玻璃状 碳。 粘合剂可以具有并入其中的碳化物或硼化物粉末。 根据本发明的阴极可以通过使用预定形状的热固性树脂作为丝的起始材料，使用由原始热固性树脂制成的粘合剂将发射极尖端固定到热固性树脂的预定位置，并加热 所得组合物在非氧化气氛中以使树脂部分碳化。 该阴极在结构上非常简单。 此外，灯丝和发射极尖端之间的粘附性优异，并且通过使电流流过阴极，可以将发射极尖端加热到高于2000℃的高温。
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公开(公告)号：US07351445B2
公开(公告)日：2008-04-01
申请号：US11450364
申请日：2006-06-12
CPC分类号： G11B5/82 , G11B5/667 , G11B5/8404 , G11B5/855
摘要： The present invention is directed to carrying out a high density magnetic recording to a material having a large coercive force by perpendicular magnetic recording head.By giving a patterning onto a soft magnetic under layer of a perpendicular two-layer recording media in sync with a period of a recording bit, a magnetic field from a write head can be allowed to converge to a soft magnetic column. Therefore, a magnetization reversal of the magnetic recording media material having a large anisotropic constant becomes possible, and then a high density magnetic recording can be achieved.
摘要翻译： 本发明涉及通过垂直磁记录头对矫顽磁力大的材料进行高密度磁记录。 通过以与记录位的周期同步地将图案化到垂直的两层记录介质的软磁下层上，可以允许来自写入头的磁场会聚到软磁柱。 因此，具有大的各向异性常数的磁记录介质材料的磁化反转成为可能，然后可实现高密度磁记录。
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53.发明申请公开(公告)号：US20060152862A1
公开(公告)日：2006-07-13
申请号：US11371244
申请日：2006-03-09
申请人： Ryoichi Nakatani , Masahiro Kitada , Naoki Koyama , Isamu Yuito , Hisashi Takano , Eijin Moriwaki , Mikio Suzuki , Masaaki Futamoto , Fumio Kugiya , Yoshibumi Matsuda , Kazuo Shiiki , Yoshinori Miyamura , Kyo Akagi , Takeshi Nakao , Hirotsugu Fukuoka , Takayuki Munemoto , Tokuho Takagaki , Toshio Kobayashi , Hideo Tanabe , Noboru Shimizu
发明人： Ryoichi Nakatani , Masahiro Kitada , Naoki Koyama , Isamu Yuito , Hisashi Takano , Eijin Moriwaki , Mikio Suzuki , Masaaki Futamoto , Fumio Kugiya , Yoshibumi Matsuda , Kazuo Shiiki , Yoshinori Miyamura , Kyo Akagi , Takeshi Nakao , Hirotsugu Fukuoka , Takayuki Munemoto , Tokuho Takagaki , Toshio Kobayashi , Hideo Tanabe , Noboru Shimizu
IPC分类号： G11B5/33
CPC分类号： G11B5/398 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3903 , G11B5/3909 , G11B5/3929 , G11B5/3967 , G11B2005/0002 , G11B2005/0016 , G11B2005/3996 , H01F10/324 , H01F10/3254 , H01F10/3268 , H01L43/08 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49155
摘要： The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magnetoresistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.
摘要翻译： 磁阻效应元件是至少具有磁性层和抵抗磁性层的绝缘材料，半导体或反铁磁材料的中间层的多层结构，并且磁阻效应元件至少在相对的磁性层上形成端子， 从而电流在中间层中流动。 构成磁阻效应元件的所有磁性层的膜表面基本上与磁记录介质的记录表面成直角相对。 因此，能够极大地降低与磁记录介质的记录面对置的磁性层的面积，因此能够通过电流检测来自高密度记录磁记录介质的非常窄的区域的磁场 穿透特性，穿过中间层。
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公开(公告)号：US20050214587A1
公开(公告)日：2005-09-29
申请号：US11103594
申请日：2005-04-12
CPC分类号： G11B5/66
摘要： An improved perpendicular magnetic recording medium and an improved magnetic storage apparatus are provided, which are suitable for high speed and high density magnetic recording. A magnetic under layer of a two-layered perpendicular magnetic recording medium includes three layers: a ferromagnetic layer; a non-magnetic layer; and a ferromagnetic layer, wherein the ferromagnetic layers are antiferromagnetically coupled with each other, thereby preventing a magnetic flux from a magnetic wall in a magnetic under layer from entering a read back head.
摘要翻译： 提供了一种改进的垂直磁记录介质和改进的磁存储装置，其适用于高速和高密度磁记录。 双层垂直磁记录介质的磁性底层包括三层：铁磁层; 非磁性层; 和铁磁层，其中所述铁磁层彼此反铁磁耦合，从而防止来自磁性底层中的磁壁的磁通量进入回读头。
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公开(公告)号：US06251532B1
公开(公告)日：2001-06-26
申请号：US08555415
申请日：1995-11-09
申请人： Masaaki Futamoto , Nobuyuki Inaba , Tomoo Yamamoto , Masukazu Igarashi , Yuzuru Hosoe , Akira Ishikawa
发明人： Masaaki Futamoto , Nobuyuki Inaba , Tomoo Yamamoto , Masukazu Igarashi , Yuzuru Hosoe , Akira Ishikawa
IPC分类号： B32B1501
CPC分类号： G11B5/656 , C22C27/06 , G11B5/64 , G11B5/66 , Y10S428/90
摘要： A magnetic recording medium capable of reducing noise and an error rate of the medium comprises a nonmagnetic substrate; a magnetic layer formed on the surface of the nonmagnetic substrate directly or through a nonmagnetic underlayer; and a protective layer formed on the magnetic layer. The magnetic recording medium satisfies the following relationships: −0.5≦{Hc(1)−Hc(p)}/Hc(1)≦0.3 Hc(1)≧2 kOe 20 G×&mgr;m≦Br(1)×t≦100 G×&mgr;m where Hc(1) is a corecivity of the magnetic layer measured in the longitudinal direction; Hc(p) is a coercivity of the magnetic layer measured in the perpendicular direction; Br(1) is a remanent magnetization of the magnetic layer measured in the longitudinal direction; and “t” is a layer thickness of the magnetic layer.
摘要翻译： 能够降低介质的噪声和误差率的磁记录介质包括非磁性衬底; 直接或通过非磁性底层形成在非磁性基片的表面上的磁性层; 以及形成在磁性层上的保护层。 磁记录介质满足以下关系：-0.5 <= {Hc（1）-Hc（p）} / Hc（1）<= 0.3Hc（1）> = 2 kOe20 Gxmum <= Br（1）xt < 100 Gxmum其中Hc（1）是沿纵向测量的磁性层的集中度; Hc（p）是在垂直方向上测量的磁性层的矫顽力; Br（1）是沿纵向测量的磁性层的剩磁; “t”为磁性层的层厚。
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公开(公告)号：US07097924B2
公开(公告)日：2006-08-29
申请号：US10747097
申请日：2003-12-30
CPC分类号： G11B5/82 , G11B5/667 , G11B5/8404 , G11B5/855
摘要： The present invention is directed to-carrying out a high density magnetic recording to a material having a large coercive force by perpendicular magnetic recording head.By giving a patterning onto a soft magnetic under layer of a perpendicular two-layer recording media in sync with a period of a recording bit, a magnetic field from a write head can be allowed to converge to a soft magnetic column. Therefore, a magnetization reversal of the magnetic recording media material having a large anisotropic constant becomes possible, and then a high density magnetic recording can be achieved.
摘要翻译： 本发明旨在通过垂直磁记录头对具有大矫顽力的材料进行高密度磁记录。 通过以与记录位的周期同步地将图案化到垂直的两层记录介质的软磁下层上，可以允许来自写入头的磁场会聚到软磁柱。 因此，具有大的各向异性常数的磁记录介质材料的磁化反转成为可能，然后可实现高密度磁记录。
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公开(公告)号：US06926974B2
公开(公告)日：2005-08-09
申请号：US09861568
申请日：2001-05-22
CPC分类号： G11B5/66
摘要： An improved perpendicular magnetic recording medium and an improved magnetic storage apparatus are provided, which are suitable for high speed and high density magnetic recording. A magnetic under layer of a two-layered perpendicular magnetic recording medium includes three layers: a ferromagnetic layer; a non-magnetic layer; and a ferromagnetic layer, wherein the ferromagnetic layers are antiferromagnetically coupled with each other, thereby preventing a magnetic flux from a magnetic wall in a magnetic under layer from entering a read back head.
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公开(公告)号：US06177208B1
公开(公告)日：2001-01-23
申请号：US09317852
申请日：1999-05-25
申请人： Tomoo Yamamoto , Nobuyuki Inaba , Masukazu Igarashi , Masaaki Futamoto , Yuzuru Hosoe , Ichiro Tamai , Emi Mangyo , Kazusuke Yamanaka
发明人： Tomoo Yamamoto , Nobuyuki Inaba , Masukazu Igarashi , Masaaki Futamoto , Yuzuru Hosoe , Ichiro Tamai , Emi Mangyo , Kazusuke Yamanaka
IPC分类号： G11B566
CPC分类号： B82Y10/00 , G11B5/00 , G11B5/012 , G11B5/3903 , G11B5/656 , G11B5/82 , G11B2005/3996 , Y10S428/90
摘要： A magnetic recording system high in S/N and low in bit error rate, capable of carrying out writing and reading of high recording density of at least 1 gigabit per 1 square inch and high in reliability can be realized by making the magnetic layer of the magnetic recording medium from a mixture comprising at least one non-magnetic compound selected from the group consisting of oxides and nitrides and a magnetic material comprising Co and Pt as main components and specifying the molar ratio of Pt to Co in the magnetic layer, and employing a magnetoresistive read back magnetic recording head.
摘要翻译： 可以实现高S / N的磁记录系统和低误码率，能够执行至少1吉比特/ 1平方英寸的高记录密度的写入和读取以及可靠性高的磁记录系统。 来自包含选自氧化物和氮化物的至少一种非磁性化合物和包含Co和Pt作为主要成分的磁性材料并指定磁性层中Pt与Co的摩尔比的混合物的磁记录介质，并且使用 磁阻回读磁记录头。
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公开(公告)号：US5919581A
公开(公告)日：1999-07-06
申请号：US670121
申请日：1996-06-25
申请人： Tomoo Yamamoto , Nobuyuki Inaba , Masukazu Igarashi , Masaaki Futamoto , Yuzuru Hosoe , Ichiro Tamai , Emi Mangyo , Kazusuke Yamanaka
发明人： Tomoo Yamamoto , Nobuyuki Inaba , Masukazu Igarashi , Masaaki Futamoto , Yuzuru Hosoe , Ichiro Tamai , Emi Mangyo , Kazusuke Yamanaka
IPC分类号： G11B5/66 , G11B5/00 , G11B5/012 , G11B5/39 , G11B5/64 , G11B5/65 , G11B5/738 , G11B5/82 , G11B20/14 , G11B5/68 , G11B5/706
CPC分类号： B82Y10/00 , G11B5/00 , G11B5/3903 , G11B5/656 , G11B2005/3996 , G11B5/012 , G11B5/82 , Y10S428/90
摘要： A magnetic recording system high in S/N and low in bit error rate, capable of carrying out writing and reading of high recording density of at least 1 gigabit per 1 square inch and high in reliability can be realized by making the magnetic layer of the magnetic recording medium from a mixture comprising at least one non-magnetic compound selected from the group consisting of oxides and nitrides and a magnetic material comprising Co and Pt as main components and specifying the molar ratio of Pt to Co in the magnetic layer, and employing a magnetoresistive read back magnetic recording head.
摘要翻译： 可以实现高S / N的磁记录系统和低误码率，能够执行至少1吉比特/ 1平方英寸的高记录密度的写入和读取以及可靠性高的磁记录系统。 来自包含选自氧化物和氮化物的至少一种非磁性化合物和包含Co和Pt作为主要成分的磁性材料并指定磁性层中Pt与Co的摩尔比的混合物的磁记录介质，并且使用 磁阻回读磁记录头。
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60.发明授权Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction 失效具有至少两个磁性层的磁记录介质，其容易轴沿相同的方向定向
公开(公告)号：US5736235A
公开(公告)日：1998-04-07
申请号：US740708
申请日：1991-08-06
申请人： Yoshibumi Matsuda , Masaaki Futamoto , Yoshinori Miyamura , Tokuho Takagaki , Hisashi Takano , Fumio Kugiya , Takeshi Nakao , Kyo Akagi , Mikio Suzuki , Hirotsugu Fukuoka , Takayuki Munemoto
发明人： Yoshibumi Matsuda , Masaaki Futamoto , Yoshinori Miyamura , Tokuho Takagaki , Hisashi Takano , Fumio Kugiya , Takeshi Nakao , Kyo Akagi , Mikio Suzuki , Hirotsugu Fukuoka , Takayuki Munemoto
CPC分类号： G11B5/66 , G11B5/64 , Y10S428/90 , Y10T428/24942 , Y10T428/2495
摘要： A magnetic recording medium, its fabrication method, and a magnetic recording apparatus in which both saturation induction and coercive force of a magnetic film is made high as they are near a surface of the recording medium. A high density information recording can be made higher than 50 kFCI in linear recording density even for spacing around 0.2 .mu.m.
摘要翻译： 一种磁记录介质，其制造方法和磁记录装置，其中磁记录介质的表面附近磁饱和感应和磁性膜的矫顽力均较高。 即使对于0.2μm左右的间隔，高密度信息记录也可以使线性记录密度高于50kFCI。
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