公开(公告)号：US20060255894A1

公开(公告)日：2006-11-16

申请号：US11429946

申请日：2006-05-09

申请人： Yuji Enomoto ,  Motoya Ito ,  Ryoso Masaki ,  Koichiro Ohara ,  Masahiro Mita ,  Matahiro Komuro ,  Masahiro Masuzawa

发明人： Yuji Enomoto ,  Motoya Ito ,  Ryoso Masaki ,  Koichiro Ohara ,  Masahiro Mita ,  Matahiro Komuro ,  Masahiro Masuzawa

IPC分类号： H01F7/02

CPC分类号： H02K1/278 ,  H02K15/03

摘要： It is desired to design a coreless motor in which a gap size is set to be as small as possible, and a magnet having a large energy product is used in order to increase the gap magnetic flux density since the coreless motor has no iron core so that the magnetic flux density is small in the gap part. A rotor core of the motor has a permanent magnet rotor which is formed by a compression molding means, and which is formed of a compact formed by molding a powder material, the compact comprising a bond magnetic portion mainly composed of a binder and a magnetic powder, and a soft magnetic portion mainly composed of a binder and a soft magnetic powder, the bond magnetic portion having magnetic poles having at least one surface which is mechanically bonded to the soft magnetic portion, in order to solve the inherent problems.

摘要翻译： 希望设计其中间隙尺寸设定为尽可能小的无芯电动机，并且使用具有大能量乘积的磁体，以便增加无芯电动机没有铁芯的间隙磁通密度 磁隙密度在间隙部分较小。 电动机的转子铁心具有由压缩成型装置形成的永久磁铁转子，该永久磁铁转子由通过模制粉末材料形成的压块形成，该压块包括主要由粘合剂构成的粘合磁性部分和磁性粉末 以及主要由粘合剂和软磁性粉末组成的软磁性部分，所述粘结磁性部分具有至少一个表面机械地结合到软磁性部分的磁极，以解决固有的问题。

公开(公告)号：US20060238282A1

公开(公告)日：2006-10-26

申请号：US11430018

申请日：2006-05-09

申请人： Matahiro Komuro ,  Katsuhiro Komuro

发明人： Matahiro Komuro ,  Katsuhiro Komuro

IPC分类号： H01F1/00

CPC分类号： H02K1/02 ,  H01F1/0009 ,  H01F1/086 ,  H01F41/0273

摘要： A permanent magnet comprises a hard magnetic material that contains at least a rare earth element and an anti-ferromagnetic material, wherein the hard magnetic material and the anti-ferromagnetic material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.

摘要翻译： 永磁体包括至少包含稀土元素和反铁磁材料的硬磁材料，其中硬磁材料和抗铁磁材料磁耦合。 基于永磁体，反铁磁材料的体积比为20％以下。

公开(公告)号：US06530141B2

公开(公告)日：2003-03-11

申请号：US09879974

申请日：2001-06-14

申请人： Matahiro Komuro ,  Tomohiro Okada ,  Moriaki Fuyama ,  Tetsuo Ito ,  Hiroshi Fukui ,  Yohji Maruyama ,  Miki Hara ,  Hisashi Takano

发明人： Matahiro Komuro ,  Tomohiro Okada ,  Moriaki Fuyama ,  Tetsuo Ito ,  Hiroshi Fukui ,  Yohji Maruyama ,  Miki Hara ,  Hisashi Takano

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/313 ,  G11B5/3143 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

摘要： A method of forming a thin film magnetic head, including forming a first magnetic layer, forming a second magnetic layer as a magnetic flux passage in combination with the first magnetic layer, and forming a laminate structure body between the first magnetic layer and the second magnetic layer. The forming of the laminate structure body includes forming a third magnetic layer, a fourth magnetic layer and a non-magnetic conductive layer between the third magnetic layer and the fourth magnetic layer, projecting the laminate structure body more toward an air bearing surface than a projection of the first magnetic layer and the second magnetic layer toward the air bearing surface, and providing the laminate structure body with a width which is smaller than a width of the first magnetic layer and the second magnetic layer.

摘要翻译： 一种形成薄膜磁头的方法，包括形成第一磁性层，与第一磁性层组合形成作为磁通量通道的第二磁性层，以及在第一磁性层和第二磁性层之间形成层叠结构体 层。 层压结构体的形成包括在第三磁性层和第四磁性层之间形成第三磁性层，第四磁性层和非磁性导电层，使叠层结构体朝向空气轴承表面突出地突出， 的第一磁性层和第二磁性层朝向空气轴承表面，并且为层叠结构体提供的宽度小于第一磁性层和第二磁性层的宽度。

公开(公告)号：US06504690B2

公开(公告)日：2003-01-07

申请号：US09767847

申请日：2001-01-24

申请人： Matahiro Komuro ,  Yoshiaki Kawato

发明人： Matahiro Komuro ,  Yoshiaki Kawato

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  Y10T29/49044

摘要： A magnetic sensor utilizing a spin tunnel magneto-resistance effect (TMR), comprising a tunnel insulating film, a first magnetic layer formed on one of the planes of the tunnel insulating film, a second magnetic layer formed on the other plane of the tunnel insulating film, a third magnetic layer containing an anti-ferromagnetic substance for fixing magnetization of the second magnetic layer, a second insulating film formed on at least one of the first and third magnetic layers and having an opening in a predetermined region, a first electrode electrically connected to one of the first and third magnetic layers only in the opening of the second insulating film, and a second electrode for causing a current to flow between the first electrode and itself through at least the first and second magnetic layers and the first insulating layer.

摘要翻译： 一种利用自旋隧道磁阻效应（TMR）的磁传感器，包括隧道绝缘膜，形成在隧道绝缘膜的一个平面上的第一磁性层，形成在隧道绝缘层的另一平面上的第二磁性层 膜，含有用于固定第二磁性层的磁化的反铁磁性物质的第三磁性层，形成在第一和第三磁性层中的至少一个上并且在预定区域中具有开口的第二绝缘膜，第一电极电 连接到仅在第二绝缘膜的开口中的第一和第三磁性层中的一个上，以及第二电极，用于使电流至少通过第一和第二磁性层和第一绝缘层在第一电极和自身之间流动 。

公开(公告)号：US5563752A

公开(公告)日：1996-10-08

申请号：US303111

申请日：1994-09-08

申请人： Matahiro Komuro ,  Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Hiroshi Fukui ,  Hirotsugu Fukuoka ,  Moriaki Fuyama

发明人： Matahiro Komuro ,  Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Hiroshi Fukui ,  Hirotsugu Fukuoka ,  Moriaki Fuyama

IPC分类号： G01R33/09 ,  G11B5/012 ,  G11B5/02 ,  G11B5/39 ,  G11B5/455

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/012 ,  G11B5/02 ,  G11B5/3903 ,  G11B5/3925 ,  G11B5/3967 ,  G11B5/399 ,  G11B5/455 ,  G11B2005/3996

摘要： A magnetic recording and reproducing device using a giant magnetoresistive film for providing high detection sensitivity. In the giant magnetoresistive film comprising a conductive nonmagnetic film, first and second conductive ferromagnetic films, a magnetization fixing film for fixing a magnetization direction of the first ferromagnetic film, and a pair of electrodes for making a detection current flow, when no external magnetic field is received and no detection current flows, a magnetization direction of the second ferromagnetic film is made non-orthogonal to the magnetization direction of the first ferromagnetic film. Magnitude of the detection current is determined so that when no external magnetic field is received and detection current flows, they are orthogonal to each other upon receipt of a magnetic field due to the detection current.

摘要翻译： 使用巨磁阻膜的磁记录和再现装置提供高检测灵敏度。 在包含导电非磁性膜，第一和第二导电铁磁膜的巨磁阻膜中，用于固定第一铁磁膜的磁化方向的磁化固定膜和用于形成检测电流的一对电极，当没有外部磁场 并且没有检测电流流动，第二铁磁性膜的磁化方向与第一铁磁性膜的磁化方向不正交。 确定检测电流的大小，使得当没有接收到外部磁场并且检测电流流动时，它们由于检测电流而在接收到磁场时彼此正交。

公开(公告)号：US4698273A

公开(公告)日：1987-10-06

申请号：US918333

申请日：1986-10-14

申请人： Matahiro Komuro ,  Yuzo Kozono ,  Takeshi Yasuda ,  Shinji Narishige ,  Masanobu Hanazono ,  Tetsuro Kuroda

发明人： Matahiro Komuro ,  Yuzo Kozono ,  Takeshi Yasuda ,  Shinji Narishige ,  Masanobu Hanazono ,  Tetsuro Kuroda

IPC分类号： H01F10/10 ,  B32B15/01 ,  C23C14/06 ,  F16L39/00 ,  G11B5/66 ,  H01F10/18 ,  H01F10/30 ,  H01F10/32 ,  H01F41/14 ,  H01F41/18 ,  C23C14/14

CPC分类号： B82Y25/00 ,  B32B15/01 ,  F16L39/00 ,  G11B5/66 ,  H01F10/18 ,  H01F10/32 ,  Y10S428/928 ,  Y10T428/12632 ,  Y10T428/12958

摘要： The film is composed of an alternate lamination of unit iron layers and unit layers of ferromagnetic iron compound such as Fe.sub.3 Al, Fe.sub.3 Si, Fe.sub.3 Ge and Fe.sub.3 Ga. The thickness of the both unit layers is less than 70 .ANG.. The film has a high saturation magnetization more than 230 emu/g and a high thermal stability so that the film is particularly applicable to a magnetic head core.

摘要翻译： 该膜由铁铁层和Fe3Al，Fe3Si，Fe3Ge和Fe3Ga等铁磁性铁化合物的单位层的交替叠层构成。 两个单元层的厚度小于70安培。 该膜具有高于230emu / g的高饱和磁化强度和高热稳定性，因此该膜特别适用于磁头芯。

公开(公告)号：US07064642B2

公开(公告)日：2006-06-20

申请号：US10390701

申请日：2003-03-19

申请人： Matahiro Komuro ,  Katsuhiro Komuro

发明人： Matahiro Komuro ,  Katsuhiro Komuro

IPC分类号： H01F7/02

CPC分类号： H02K1/02 ,  H01F1/0009 ,  H01F1/086 ,  H01F41/0273

摘要： A permanent magnet comprises a hard magnetic material that contains at least a rare earth element and an anti-ferromagnetic material, wherein the hard magnetic material and the anti-ferromagnetic material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.

公开(公告)号：US20050093390A1

公开(公告)日：2005-05-05

申请号：US11003742

申请日：2004-12-06

申请人： Matahiro Komuro ,  Masashi Kitamura ,  Junya Kaneda ,  Motoya Ito ,  Teruyoshi Abe ,  Yoshihiko Kuriyama

发明人： Matahiro Komuro ,  Masashi Kitamura ,  Junya Kaneda ,  Motoya Ito ,  Teruyoshi Abe ,  Yoshihiko Kuriyama

IPC分类号： H02K21/14 ,  C12M3/06 ,  H02K1/27 ,  H02K15/03 ,  H02K21/12

CPC分类号： H02K1/278 ,  H02K15/03

摘要： A rotor has magnets segmented in a circumferential direction of a periphery of a shaft, wherein magnetizing directions of the segmented magnets continuously vary, and a non-magnetic material or a ferromagnetic material is interposed in a circumferential gap between the segmented magnets. Further, a method of manufacturing a rotor comprises steps of arranging coils so that a longitudinal direction of each of the coils is along an axis of the shaft and magnetizing the segmented magnets. Still further, a rotary machine uses the rotor.

摘要翻译： 转子具有在轴的圆周方向上分段的磁体，其中分段磁体的磁化方向连续变化，并且非磁性材料或铁磁材料插入在分段磁体之间的周向间隙中。 此外，制造转子的方法包括以下步骤：布置线圈，使得每个线圈的纵向方向沿着轴的轴线并且使分段的磁体被磁化。 此外，旋转机械使用转子。

公开(公告)号：US06510025B2

公开(公告)日：2003-01-21

申请号：US09964814

申请日：2001-09-28

申请人： Shun-Ichi Narumi ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Matahiro Komuro

发明人： Shun-Ichi Narumi ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Matahiro Komuro

IPC分类号： G11B5147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3109 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/3156 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

摘要： An inductive thin-film magnetic head with small fluctuations of the reproduction output and noises for reproduction is disclosed. The forward end of each of a lower magnetic core and an upper magnetic core has the same width as the track. The rear end of each of the lower magnetic core and the upper magnetic core, on the other hand, is wider than the forward end thereof in the direction transverse of the track. Also, the lower magnetic core is formed of at least two magnetic layers with a non-magnetic layer interposed therebetween.

摘要翻译： 公开了一种具有小的再现输出波动和用于再现的噪声的感应薄膜磁头。 下磁芯和上磁芯各自的前端具有与轨道相同的宽度。 另一方面，下磁芯和上磁芯中的每一个的后端比其轨道横向方向的前端宽。 此外，下磁芯由至少两个介于其间的非磁性层的磁性层形成。

公开(公告)号：US5229621A

公开(公告)日：1993-07-20

申请号：US888422

申请日：1992-05-26

申请人： Matahiro Komuro ,  Yuzo Kozono ,  Masanobu Hanazono

发明人： Matahiro Komuro ,  Yuzo Kozono ,  Masanobu Hanazono

IPC分类号： H01L27/22

CPC分类号： H01S5/0607 ,  B82Y20/00 ,  G11B11/10543 ,  H01S2301/173 ,  H01S5/34313

摘要： A magnetic semiconductor element formed by joining a magnetostrictive material and a semiconductive material with each other, in which the lattice constant of the semiconductive material is variable by magnetostriction at the interface therebetween; or in which an interface between the two materials is formed by epitaxial growth and the orientation of the magnetostriction is identical to the orientation in which the lattice constant of the semiconductive material varies. Next, a semiconductor laser is so constructed that the interface between the magnetostrictive material and the semiconductive material is disposed in the semiconductor laser and the wavelength and the output of the semiconductor laser are variable by magnetostriction. Further, a method of making a magnetic semiconductor element comprises a step of epitaxially growing the layer of the magnetostrictive material on the layer made of the semiconductive material. Furthermore, a magneto-optical read out head is so constructed that the interface formed by joining the magnetostrictive material and the semiconductive material with each other is disposed in the semiconductor laser constituting a head reading out information recorded in a magnetic recording medium.

摘要翻译： 通过将磁致伸缩材料和半导体材料彼此接合而形成的磁性半导体元件，其中半导体材料的晶格常数可通过它们之间的界面处的磁致伸缩而变化; 或者其中通过外延生长形成两种材料之间的界面，并且磁致伸缩的取向与半导体材料的晶格常数变化的取向相同。 接下来，半导体激光器被构造成使得磁致伸缩材料和半导体材料之间的界面设置在半导体激光器中，半导体激光器的波长和输出通过磁致伸缩而变化。 此外，制造磁性半导体元件的方法包括在由半导体材料制成的层上外延生长磁致伸缩材料层的步骤。 此外，磁光读出头被构造成使得通过将磁致伸缩材料和半导体材料彼此接合而形成的界面设置在半导体激光器中，该半导体激光器构成磁头读出记录在磁记录介质中的信息。