公开(公告)号：US08274653B2

公开(公告)日：2012-09-25

申请号：US12667753

申请日：2008-07-30

申请人： Koichiro Nakamura ,  Yuzo Sasaki ,  Kazuo Fujiura ,  Shogo Yagi

发明人： Koichiro Nakamura ,  Yuzo Sasaki ,  Kazuo Fujiura ,  Shogo Yagi

IPC分类号： G01J3/28

CPC分类号： G01J3/14 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0237 ,  G01J3/06 ,  G01J3/18 ,  G01J3/36 ,  G01J2003/064

摘要： The present invention provides a small spectroscope that has a short response time. A spectroscope according to one embodiment of the present invention includes: a beam deflector that includes an electro-optic crystal, having an electro-optic effect, and paired electrodes used to apply an electric field inside the electro-optic crystal; spectroscopic means for dispersing light output by the beam deflector; and wavelength selection means for selecting light having an arbitrary wavelength from the light dispersed and output by the spectroscopic means.

摘要翻译： 本发明提供一种响应时间短的小型分光镜。 根据本发明的一个实施例的分光镜包括：光束偏转器，其包括具有电光效应的电光晶体，以及用于在电光晶体内施加电场的成对电极; 分光装置，用于分散由光束偏转器输出的光; 以及波长选择装置，用于从由分光装置分散和输出的光中选择具有任意波长的光。

公开(公告)号：US20110058166A1

公开(公告)日：2011-03-10

申请号：US12667753

申请日：2008-07-30

申请人： Koichiro Nakamura ,  Yuzo Sasaki ,  Kazuo Fujiura ,  Shogo Yagi

发明人： Koichiro Nakamura ,  Yuzo Sasaki ,  Kazuo Fujiura ,  Shogo Yagi

IPC分类号： G01J3/447 ,  G01J3/28

CPC分类号： G01J3/14 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0237 ,  G01J3/06 ,  G01J3/18 ,  G01J3/36 ,  G01J2003/064

摘要： The present invention provides a small spectroscope that has a short response time. A spectroscope according to one embodiment of the present invention includes: a beam deflector that includes an electro-optic crystal, having an electro-optic effect, and paired electrodes used to apply an electric field inside the electro-optic crystal; spectroscopic means for dispersing light output by the beam deflector; and wavelength selection means for selecting light having an arbitrary wavelength from the light dispersed and output by the spectroscopic means.

摘要翻译： 本发明提供一种响应时间短的小型分光镜。 根据本发明的一个实施例的分光镜包括：光束偏转器，其包括具有电光效应的电光晶体，以及用于在电光晶体内施加电场的成对电极; 分光装置，用于分散由光束偏转器输出的光; 以及波长选择装置，用于从由分光装置分散和输出的光中选择具有任意波长的光。

公开(公告)号：US08034471B2

公开(公告)日：2011-10-11

申请号：US12536225

申请日：2009-08-05

申请人： Shinichi Ishibashi ,  Migaku Takahashi ,  Shin Saito ,  Yuzo Sasaki ,  Atsushi Hashimoto ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

发明人： Shinichi Ishibashi ,  Migaku Takahashi ,  Shin Saito ,  Yuzo Sasaki ,  Atsushi Hashimoto ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

IPC分类号： G11B5/66

CPC分类号： G11B5/82 ,  G11B5/65 ,  G11B5/667 ,  G11B5/732

摘要： In a perpendicular magnetic recording medium in which at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer are formed on a non-magnetic substrate in order from the bottom, the orientation control layer has a laminated structure of two or more layers including an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer. The seed layer includes two or more kinds of elements having a face-centered cubic structure, has face-centered cubic (111) plane crystals oriented in a direction perpendicular to a substrate surface, and has a pseudo-hexagonal structure.

摘要翻译： 在从底部起依次形成至少软磁性底层，取向控制层，磁记录层和保护层的垂直磁记录介质中，取向控制层具有层叠结构 包括比中间层更靠近非磁性基板设置的中间层和种子层的两层以上的层。 种子层包括具有面心立方结构的两种或更多种元件，具有在垂直于衬底表面的方向上取向的面心立方（111）面晶体，并且具有假六边形结构。

公开(公告)号：US20100209741A1

公开(公告)日：2010-08-19

申请号：US12670815

申请日：2008-07-25

申请人： Yuzo Sasaki ,  Atsushi Hashimoto

发明人： Yuzo Sasaki ,  Atsushi Hashimoto

IPC分类号： G11B5/706 ,  C23C14/34

CPC分类号： G11B5/65 ,  G11B5/66

摘要： A perpendicular magnetic recording medium is provided, which has a soft magnetic layer, an under layer, an intermediate layer and a perpendicular magnetic recording layer, and is characterized in that the perpendicular magnetic recording layer is comprised of at least one magnetic layer, which magnetic layer or at least one of which magnetic layers comprises cobalt-based ferromagnetic crystal grains and grain boundaries comprised of an oxide, wherein the ferromagnetic crystal grains further comprise ruthenium. The perpendicular magnetic recording medium has ferromagnetic crystal grains with extremely small grain size and exhibiting enhanced discretion, as well as good perpendicular orientation in the perpendicular magnetic recording layer, and thus, the medium is capable of recording and reproducing information with high density.

摘要翻译： 提供一种具有软磁层，下层，中间层和垂直磁记录层的垂直磁记录介质，其特征在于垂直磁记录层由至少一个磁性层组成，该磁性层 层或其中至少一个磁性层包括钴基铁磁晶粒和由氧化物组成的晶界，其中铁磁晶粒还包含钌。 垂直磁记录介质具有极小的晶粒尺寸的铁磁晶粒，并且在垂直磁记录层中表现出增强的判断力以及良好的垂直取向，因此该介质能够高密度地记录和再现信息。

公开(公告)号：US20100165510A1

公开(公告)日：2010-07-01

申请号：US12601372

申请日：2008-05-21

申请人： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

发明人： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

IPC分类号： G11B5/82

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/66 ,  G11B5/7379

摘要： A magnetic recording medium comprising a substrate, at least one soft magnetic underlayer formed on the substrate, a perpendicular magnetic recording layer formed on the soft magnetic underlayer, and a protective layer formed on the perpendicular magnetic recording layer, is provided wherein the perpendicular magnetic recording layer is comprised of a primary recording layer, a non-magnetic intermediate layer and an auxiliary layer; the primary recording layer comprises magnetic crystal grains and grain boundary portions surrounding the magnetic crystal grains, and has a perpendicular magnetic anisotropy; the auxiliary layer has a negative magneto crystalline anisotropy; and the non-magnetic intermediate layer is formed between the primary recording layer and the auxiliary layer and comprises at least one metal selected from Ru, Rh and Ir, or at least one alloy thereof. This magnetic recording medium exhibits high heat resistance and good recording/reproducing characteristics, and enables a high recording density.

摘要翻译： 一种磁记录介质，其特征在于，包括基板，形成在基板上的至少一个软磁性底层，形成在软磁性底层上的垂直磁记录层和形成在垂直磁记录层上的保护层，其中垂直磁记录 层由主记录层，非磁性中间层和辅助层构成; 主记录层包括磁晶粒和围绕磁晶粒的晶界部分，并且具有垂直的磁各向异性; 辅助层具有负磁结晶各向异性; 并且非磁性中间层形成在初级记录层和辅助层之间，并且包含至少一种选自Ru，Rh和Ir的金属，或其至少一种合金。 该磁记录介质具有高的耐热性和良好的记录/再现特性，并且能够实现高的记录密度。

公开(公告)号：US20090147401A1

公开(公告)日：2009-06-11

申请号：US12300073

申请日：2007-05-05

申请人： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

发明人： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： G11B5/667 ,  G11B5/7325

摘要： The present invention provides a magnetic recording medium capable of recording or reproducing high-density information by reducing the grain size of a perpendicular magnetic recording layer and improving vertical orientation, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. The perpendicular magnetic recording medium includes: a non-magnetic substrate; and at least an soft magnetic layer, an under layer, an intermediate layer, and a perpendicular magnetic recording film that are formed on the non-magnetic substrate. At least one layer of the intermediate layer is made of an alloy material of an element having an fcc structure and an element having a bcc structure or an hcp structure, and has both a crystal structure having (111) orientation and an irregular layer lattice (stacking fault) caused by a mixture of the fcc structure and the bcc structure. The at least one layer of the intermediate layer is made of an alloy material of at least one element that is selected from a group composed of Pt, Ir, Pd, Au, Ni, and Co, which is a main ingredient, and has the fcc structure, and an element having the bcc structure or the hcp structure.

摘要翻译： 本发明提供一种能够通过减小垂直磁记录层的晶粒尺寸并提高垂直取向来记录或再现高密度信息的磁记录介质，其制造方法和磁记录/再现装置。 垂直磁记录介质包括：非磁性基板; 以及形成在非磁性基板上的至少软磁性层，下层，中间层和垂直磁记录膜。 中间层的至少一层由具有fcc结构的元素和具有bcc结构或hcp结构的元素的合金材料制成，并且具有具有（111）取向的晶体结构和不规则层晶格（ 堆叠故障）由fcc结构和bcc结构的混合引起。 中间层的至少一层由选自由作为主要成分的Pt，Ir，Pd，Au，Ni和Co组成的组中的至少一种元素的合金材料制成，并且具有 fcc结构，以及具有bcc结构或hcp结构的元素。

公开(公告)号：US20120113768A1

公开(公告)日：2012-05-10

申请号：US13384933

申请日：2010-08-19

申请人： Tetsuya Kanbe ,  Yuzo Sasaki ,  Atsushi Hashimoto

发明人： Tetsuya Kanbe ,  Yuzo Sasaki ,  Atsushi Hashimoto

IPC分类号： G11B5/66 ,  G11B13/04

CPC分类号： G11B5/7325 ,  G11B5/6088 ,  G11B5/656 ,  G11B5/82 ,  G11B2005/0021

摘要： A heat-assisted magnetic recording medium that includes a substrate 1, underlayers formed on the substrate 1, and a magnetic layer 5 which is formed on the underlayers and contains either an FePt alloy having an L10 structure or a CoPt alloy having an L10 structure as a main component, wherein the underlayers include a first underlayer 2 formed from an amorphous alloy, a second underlayer 3 formed from an alloy having a BCC structure containing Cr as a main component and also containing at least one element selected from among Ti, Mo, W, V, Mn and Ru, and a third underlayer 4 formed from MgO. Also, a magnetic storage device that uses the heat-assisted magnetic recording medium.

摘要翻译： 一种热辅助磁记录介质，其包括基板1，形成在基板1上的底层和形成在底层上的磁性层5，并且包含具有L10结构的FePt合金或具有L10结构的CoPt合金作为 主要成分，其中底层包括由非晶合金形成的第一底层2，由具有包含Cr作为主要成分的BCC结构的合金形成的第二底层3，并且还含有选自Ti，Mo， W，V，Mn和Ru，以及由MgO形成的第三底层4。 而且，使用该热辅助磁记录介质的磁存储装置。

公开(公告)号：US20100247961A1

公开(公告)日：2010-09-30

申请号：US12525943

申请日：2008-01-16

申请人： Ryuji Sakaguchi ,  Gohei Kurokawak ,  Yuzo Sasaki ,  Tatsu Komatsuda ,  Amarendra K. Singh

发明人： Ryuji Sakaguchi ,  Gohei Kurokawak ,  Yuzo Sasaki ,  Tatsu Komatsuda ,  Amarendra K. Singh

IPC分类号： G11B5/33

CPC分类号： G11B5/8404 ,  G11B5/7325

摘要： In a perpendicular magnetic recording medium having at least a soft magnetic back layer, an underlayer, an intermediate layer and a perpendicular magnetic recording layer on a nonmagnetic substrate, at least one layer in the intermediate layer contains Re as a main component element and contains, as a second main component element, an element having an hcp structure or an element having a bcc structure. The concentration of Re as the main component element of the intermediate layer is within the range from 55 to 99.5 atomic percent. The second component element is Co or Cr.

摘要翻译： 在非磁性基板上至少具有软磁性背层，底层，中间层和垂直磁记录层的垂直磁记录介质中，中间层中的至少一层含有Re作为主要成分元素， 作为第二主要元件元件，具有hcp结构的元件或具有bcc结构的元件。 作为中间层的主要成分的Re的浓度在55〜99.5原子％的范围内。 第二组分元素是Co或Cr。

公开(公告)号：US20100215991A1

公开(公告)日：2010-08-26

申请号：US12671452

申请日：2008-07-25

申请人： Gohei Kurokawa ,  Yuzo Sasaki ,  Tatsu Komatsuda ,  Atsushi Hashimoto

发明人： Gohei Kurokawa ,  Yuzo Sasaki ,  Tatsu Komatsuda ,  Atsushi Hashimoto

IPC分类号： G11B5/706 ,  G11B5/84

CPC分类号： G11B5/7325 ,  G11B5/82 ,  G11B5/851

摘要： A perpendicular magnetic recording medium is provided, which has a soft magnetic layer, a seed layer, a first intermediate layer, a second intermediate layer and a perpendicular magnetic recording layer, formed in this order on a non-magnetic substrate, and is characterized in that the seed layer is comprised of a (002) crystal plane-orientated hcp structure, the first intermediate layer is comprised of a (110) crystal plane-orientated bcc structure and the second intermediate layer is comprised of a (002) crystal plane-orientated hcp structure. The (110) crystal plane-orientated bcc structure comprises at least 60 atomic % of Cr. The magnetic recording medium has fine and well discrete magnetic crystal grains with extremely small size and exhibits good perpendicular orientation in the perpendicular magnetic recording layer, and thus, the medium is capable of recording and reproducing information with high density.

摘要翻译： 提供了一种垂直磁记录介质，其具有在非磁性基板上依次形成的软磁性层，种子层，第一中间层，第二中间层和垂直磁记录层，其特征在于 种子层由（002）晶面取向的hcp结构构成，第一中间层由（110）晶面定向的bcc结构构成，第二中间层由（002）晶面取向的hcp结构构成， 定向hcp结构。 （110）晶面取向的bcc结构包含至少60原子％的Cr。 磁记录介质具有极小尺寸的精细且分散的磁晶粒，并且在垂直磁记录层中呈现出良好的垂直取向，因此该介质能够以高密度记录和再现信息。

公开(公告)号：US20100136370A1

公开(公告)日：2010-06-03

申请号：US12530423

申请日：2008-02-19

申请人： Ryuji Sakaguchi ,  Gohei Kurokawa ,  Yuzo Sasaki ,  Tatsu Komatsuda ,  Amarendra K. Singh

发明人： Ryuji Sakaguchi ,  Gohei Kurokawa ,  Yuzo Sasaki ,  Tatsu Komatsuda ,  Amarendra K. Singh

IPC分类号： G11B5/33

CPC分类号： G11B5/7325 ,  Y10T428/11

摘要： The present invention provides a magnetic recording medium capable of reducing the diameter of particles of a perpendicular magnetic recording layer and obtaining a high perpendicular orientation to enable information to be recorded or reproduced at a high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A perpendicular magnetic recording medium includes a non-magnetic substrate; and at least a soft magnetic layer, an underlayer, an intermediate layer, and a perpendicular magnetic recording layer that are formed on the non-magnetic substrate in this order. The underlayer is a (111) crystal orientation layer having an fcc structure, and the intermediate layer includes a (110) crystal orientation layer having a bcc structure and a (002) crystal orientation layer having an hcp structure in this order. The (110) crystal orientation layer having the bcc structure includes 60 at % or more of Cr.

摘要翻译： 本发明提供一种磁记录介质，其能够减小垂直磁记录层的颗粒的直径并获得高垂直取向以使信息以高密度记录或再现，其制造方法和磁性 记录/再现装置。 垂直磁记录介质包括非磁性基片; 以及至少形成在非磁性基板上的软磁性层，底层，中间层和垂直磁记录层。 底层是具有fcc结构的（111）晶体取向层，中间层包括具有bcc结构的（110）晶体取向层和具有hcp结构的（002）晶体取向层。 具有bcc结构的（110）结晶取向层包含60原子％以上的Cr。