公开(公告)号：US20050214520A1

公开(公告)日：2005-09-29

申请号：US11079190

申请日：2005-03-15

申请人： Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Akira Kikitsu

发明人： Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Akira Kikitsu

IPC分类号： G11B5/667 ,  B32B5/16 ,  G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  H01F10/00

CPC分类号： B82Y25/00 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  H01F10/007 ,  Y10T428/25

摘要： A perpendicular magnetic recording medium suitable for attaining a low noise high magnetic recording density is obtained. The medium has a small average magnetic grain diameter, a small magnetic grain diameter distribution, a high perpendicular crystallographic magnetic grain orientation and a high regularity magnetic grain arrangement. The perpendicular magnetic recording medium comprises a soft magnetic layer, a granular under-layer and a perpendicular magnetic recording layer on a substrate. The granular under-layer is formed on a metal under-layer. The metal grains in the granular layer are separated by nonmagnetic inter-grain material and are partially penetrated into the metal under-layer. The perpendicular magnetic recording layer is formed on the granular layer. Then a perpendicular magnetic recording medium shows high signal to noise ratio and excellent high-density recording characteristics.

摘要翻译： 获得适于获得低噪声高磁记录密度的垂直磁记录介质。 该介质具有小的平均磁晶粒直径，小的磁晶粒直径分布，高垂直晶体磁晶粒取向和高规则磁晶粒排列。 垂直磁记录介质包括在基底上的软磁性层，颗粒底层和垂直磁记录层。 颗粒状底层形成在金属底层上。 颗粒层中的金属颗粒被非磁性颗粒间材料分离，并部分渗入金属底层。 垂直磁记录层形成在粒状层上。 然后垂直磁记录介质显示出高的信噪比和优异的高密度记录特性。

公开(公告)号：US20050018547A1

公开(公告)日：2005-01-27

申请号：US10920182

申请日：2004-08-18

申请人： Junichi Akiyama ,  Akira Kikitsu ,  Tadashi Kai ,  Toshihiko Nagase ,  Tomoyuki Maeda

发明人： Junichi Akiyama ,  Akira Kikitsu ,  Tadashi Kai ,  Toshihiko Nagase ,  Tomoyuki Maeda

IPC分类号： G11B11/10 ,  G11B5/00 ,  G11B5/02 ,  G11B5/127 ,  G11B5/31 ,  G11B5/39 ,  G11B7/00 ,  G11B13/04 ,  G11B11/00

CPC分类号： G11B5/4826 ,  G11B5/127 ,  G11B5/3103 ,  G11B5/3967 ,  G11B5/4833 ,  G11B7/00 ,  G11B13/045 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A pair of members opposed to each other via a gap are commonly used as an evanescent light probe and a writing magnetic head. When the spacing and width of the gap are smaller than the wavelength λ of injected light, highly intensive evanescent light is generated from the gap position of the opposite surface. Magnetic writing is carried out by applying a recording magnetic field from the pair of members to a medium heated by the evanescent light.

摘要翻译： 经由间隙彼此相对的一对构件通常用作渐逝光探针和写入磁头。 当间隙的间隔和宽度小于注入的光的波长λ时，从相对表面的间隙位置产生高度强烈的消逝光。 通过将记录磁场从一对构件施加到由渐逝光加热的介质来进行磁写入。

公开(公告)号：US06636460B2

公开(公告)日：2003-10-21

申请号：US09749808

申请日：2000-12-28

申请人： Junichi Akiyama ,  Katsutaro Ichihara ,  Akira Kikitsu

发明人： Junichi Akiyama ,  Katsutaro Ichihara ,  Akira Kikitsu

IPC分类号： G11B1100

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/127 ,  G11B5/314 ,  G11B5/6088 ,  G11B13/045 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  G11B2005/3996

摘要： In a thermally-assisted magnetic recorder configured to heat a medium with a heat source like a light beam and thereby decrease the coercive force of a recording portion so as to magnetically record information on the recording portion decreased in coercive force by applying a recording magnetic field from a recording magnetic pole thereto, relative timing between heating of the medium and magnetic recording is optimized by locating a reversing point of magnetization, in which the coercive force of the recording portion equals the intensity of the recording magnetic field, in the leading side of the trailing edge of the recording magnetic pole.

摘要翻译： 在热辅助磁记录器中，构造成加热具有像光束的热源的介质，从而降低记录部分的矫顽力，从而通过施加记录磁场来磁记录在矫顽力减小的记录部分上的信息 从记录磁极到介质的加热和磁记录之间的相对定时通过在磁记录的前方定位记录部分的矫顽力等于记录磁场的强度的磁化反转点而被优化 记录磁极的后缘。

公开(公告)号：US5175714A

公开(公告)日：1992-12-29

申请号：US413485

申请日：1989-09-27

申请人： Akira Kikitsu ,  Katsutarou Ichihara ,  Sumio Ashida

发明人： Akira Kikitsu ,  Katsutarou Ichihara ,  Sumio Ashida

IPC分类号： G11B11/105

CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10521

摘要： A magneto-optical recording medium including a recording layer and a bias layer being stacked one upon the other to apply coupling interaction which is mainly magnetostatic interaction to each other, the bias layer having a magnetization-reversing temperature higher than that of the recording layer. The medium is irradiated with laser beam pulses having a recording level and an erasing level lower than the recording level, thereby recording and erasing the information. When the medium is irradiated with the laser beam pulse having the recording level and the irradiated region is cooled to the magnetization reversing temperature T.sub.rR, the magnetization of the beam-irradiated region of the recording layer is aligned with a direction of the leakage magnetic field leaking from the recording layer. When the medium is irradiated with the laser beam pulse having the erase level and the irradiated region is cooled to T.sub.rR, direction of magnetization of the beam-irradiated region of the recording layer is aligned with a direction of the leakage magnetic field applied from the bias layer to the recording layer.

公开(公告)号：US08487345B2

公开(公告)日：2013-07-16

申请号：US12885952

申请日：2010-09-20

申请人： Takayuki Tsukamoto ,  Tsukasa Nakai ,  Akira Kikitsu ,  Takeshi Yamaguchi ,  Sumio Ashida

发明人： Takayuki Tsukamoto ,  Tsukasa Nakai ,  Akira Kikitsu ,  Takeshi Yamaguchi ,  Sumio Ashida

IPC分类号： H01L21/02

CPC分类号： G11B11/002 ,  B82Y10/00 ,  G11B9/04 ,  G11B9/149 ,  G11B11/08 ,  G11C11/56 ,  G11C11/5678 ,  G11C13/0004 ,  G11C13/003 ,  G11C16/0483 ,  G11C2211/565 ,  G11C2213/53 ,  G11C2213/56 ,  G11C2213/71 ,  G11C2213/72 ,  G11C2213/75 ,  G11C2213/78 ,  G11C2213/79 ,  H01L27/2409 ,  H01L27/2481 ,  H01L45/06 ,  H01L45/1233 ,  H01L45/1246 ,  H01L45/1286 ,  H01L45/144 ,  H01L45/1683

摘要： According to one embodiment, an information recording and reproducing device includes a stacked body. The stacked body includes a first layer, a second layer and a recording layer provided between the first layer and the second layer. The recording layer includes a phase-change material and a crystal nucleus. The phase-change material is capable of reversely changing between a crystal state and an amorphous state by a current supplied via the first layer and the second layer. The crystal nucleus is provided in contact with the phase-change material and includes a crystal nucleus material having a crystal structure identical to a crystal structure of the crystal state of the phase-change material, and a crystal nucleus coating provided on a surface of the crystal nucleus material and having a composition different from a composition of the crystal nucleus material.

摘要翻译： 根据一个实施例，信息记录和再现装置包括堆叠体。 层叠体包括设置在第一层和第二层之间的第一层，第二层和记录层。 记录层包括相变材料和晶核。 相变材料能够通过经由第一层和第二层提供的电流在晶体状态和非晶状态之间反向变化。 提供与相变材料接触的晶核，并且包括具有与相变材料的晶体状态的晶体结构相同的晶体结构的晶核材料，以及设置在相变材料的表面上的晶核涂层 并且具有与晶核材料的组成不同的组成的晶核材料。

公开(公告)号：US07622204B2

公开(公告)日：2009-11-24

申请号：US11076114

申请日：2005-03-09

申请人： Tomoyuki Maeda ,  Akira Kikitsu ,  Soichi Oikawa ,  Takeshi Iwasaki

发明人： Tomoyuki Maeda ,  Akira Kikitsu ,  Soichi Oikawa ,  Takeshi Iwasaki

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/7325

摘要： A large grain diameter under-layer of at least one selected from Cu, Ni or Rh, comprising large average diameter crystalline grains of 50 nm or more than 50 nm with the (100) crystal plane of the grains oriented parallel to the substrate surface, was formed on a substrate. Then, a magnetic recording layer was deposited on the under-layer. The magnetic recording medium carrying this structure showed very small magnetic crystalline grains in magnetic layer, and excellent overwrite characteristics and signal to noise ratio at high recording density.

摘要翻译： 由Cu，Ni或Rh中选出的至少一种的大粒径底层，其中平均直径为100nm的平均直径的晶粒大于50nm或大于50nm， 形成在基板上。 然后，磁记录层沉积在底层上。 携带这种结构的磁记录介质在磁性层中显示出非常小的磁晶粒，并且在高记录密度下具有优异的重写特性和信噪比。

公开(公告)号：US07416794B2

公开(公告)日：2008-08-26

申请号：US11080487

申请日：2005-03-16

申请人： Tomoyuki Maeda ,  Akira Kikitsu ,  Soichi Oikawa ,  Takeshi Iwasaki

发明人： Tomoyuki Maeda ,  Akira Kikitsu ,  Soichi Oikawa ,  Takeshi Iwasaki

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/7325

摘要： A magnetic recording layer is formed on an under-layer comprising a Cu crystalline grain layer and a deposited nitrogen atom layer on the Cu crystalline grain layer surface. Then the magnetic recording layer comprising very small average grain diameter and sharp grain diameter distribution is obtained. The magnetic recording medium comprising the magnetic recording layer shows excellent signal to noise ratio at high density recording.

摘要翻译： 在Cu晶粒层表面上的包含Cu晶粒层和沉积的氮原子层的下层上形成磁记录层。 然后获得包含非常小的平均粒径和尖锐的粒径分布的磁记录层。 包括磁记录层的磁记录介质在高密度记录时显示出优异的信噪比。

公开(公告)号：US07343857B2

公开(公告)日：2008-03-18

申请号：US10952743

申请日：2004-09-30

申请人： Masatoshi Sakuarai ,  Akira Kikitsu ,  Naoko Kihara

发明人： Masatoshi Sakuarai ,  Akira Kikitsu ,  Naoko Kihara

IPC分类号： B41F33/00

CPC分类号： G03F7/0002 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/855 ,  Y10S977/877 ,  Y10S977/888

摘要： An imprint apparatus configured such that it can press a laminate structure in which a magnetic film and a resist film are sequentially laminated on a substrate. The imprint apparatus includes a first press plate configured to mount the laminate structure, a second press plate adapted for sandwiching the laminate structure, a stamper placed on a surface of the second press plate, and has projections and recesses configured to be transferred onto the resist film, and a light source configured to dispose on the same plane as the laminate structure, and is oriented so that the light source can shine the resist film.

摘要翻译： 一种压印装置，其构造成能够将其中磁性膜和抗蚀剂膜依次层压在基板上的层叠结构。 压印装置包括构造成安装层叠结构的第一压板，适于夹持层叠结构的第二压板，设置在第二压板的表面上的压模，并且具有被配置为转印到抗蚀剂上的突起和凹陷 膜，以及配置为与层叠结构在同一平面上的光源，并且被定向成使得光源能够照射抗蚀剂膜。

公开(公告)号：US20070259214A1

公开(公告)日：2007-11-08

申请号：US11666309

申请日：2005-10-28

申请人： Migaku Takahashi ,  Masahiro Oka ,  Akira Kikitsu

发明人： Migaku Takahashi ,  Masahiro Oka ,  Akira Kikitsu

IPC分类号： G11B5/667

CPC分类号： G11B5/732

摘要： The invention provides a perpendicular magnetic recording medium in which the recording density is greatly increased with little deviation of the crystal structure. A perpendicular magnetic recording medium has at least a soft magnetic under layer, an orientation control layer, a perpendicular magnetic layer, and a protective layer, which are formed on a nonmagnetic substrate, the orientation control layer consisting of a plurality of layers including a seed layer and an intermediate layer from the substrate side. Preferably, the seed layer and the intermediate layer each have a hexagonal close-packed (hcp) structure, and the average grain size of the seed layer is between 8 nm and 20 nm. The main component of the seed layer is preferably Mg, and the main component of the intermediate layer is preferably Ru.

摘要翻译： 本发明提供了一种垂直磁记录介质，其中记录密度大大增加，晶体结构几乎没有偏差。 垂直磁记录介质至少形成在非磁性基板上的软磁下层，取向控制层，垂直磁性层和保护层，所述取向控制层由包括种子的多个层 层和中间层。 优选地，种子层和中间层各自具有六方密堆积（hcp）结构，种子层的平均晶粒尺寸在8nm和20nm之间。 种子层的主要成分优选为Mg，中间层的主要成分优选为Ru。

公开(公告)号：US07272107B2

公开(公告)日：2007-09-18

申请号：US10958403

申请日：2004-10-06

申请人： Katsutaro Ichihara ,  Akira Kikitsu ,  Toshihiko Nagase

发明人： Katsutaro Ichihara ,  Akira Kikitsu ,  Toshihiko Nagase

IPC分类号： G11B7/24

CPC分类号： G11B7/1263 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/1267 ,  G11B7/24065 ,  G11B7/24067 ,  G11B7/243 ,  G11B7/246 ,  G11B2007/24304 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/2432 ,  G11B2007/24324

摘要： A tool attachable to a spindle of a machine tool in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., giving a higher rotational speed than that of the spindle of the machine tool without supplying electric power from the outside, and able to be changed automatically, provided with a machining tool for machining a workpiece, a motor for driving the machining tool, a generator for generating electric power to drive the motor by the rotation of the spindle, and a breaker for breaking a supply line of electric current from the generator to the motor when electric current over a predetermined value flows in the supply line.

摘要翻译： 可以与普通工具相同的方式安装在机床的主轴上的工具，能够不与外部电源等连接而被驱动，给出比机床的主轴更高的转速，而不需要供电 能够自动地更换，设置有用于加工工件的加工工具，用于驱动加工工具的马达，用于通过主轴的旋转产生电力来驱动马达的发电机，以及断路器 当电流超过预定值的电流在供应管线中时，将电流从发电机断开到电动机。