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：US06091582A

公开(公告)日：2000-07-18

申请号：US48985

申请日：1998-03-27

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： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  G11B5/147 ,  G11B5/23

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 thin film magnetic head is providing for recording with less blur having a high recording magnetic field, for use in a recording/reproduction separation type magnetic head and a magnetic recording/reproducing apparatus. The thin film magnetic head, in which a gap film of a recording head and a magnetic film in contact with the gap film have the same track width, includes an upper magnetic film of the recording head and an upper shield film of a magnetic resistive film, each having a width wider than the track width, and a cross section parallel to the air bearing surface of the upper magnetic film is reduced at a position less than a gap depth from the air bearing surface. The thin film magnetic head has a coil conductor sandwiched by a first magnetic film and a fourth magnetic film, a second magnetic body magnetically connected to the first magnetic film, a third magnetic body magnetically connected to the fourth magnetic film, and a magnetic gap sandwiched by the second and third magnetic films, in which an insulating and non-magnetic single film in contact with the second and third magnetic films covers at least the first magnetic film.

摘要翻译： 薄膜磁头提供用于具有高记录磁场的较少模糊的记录，用于记录/再现分离型磁头和磁记录/再现装置。 其中记录头的间隙膜和与间隙膜接触的磁性膜具有相同的轨道宽度的薄膜磁头包括记录头的上部磁性膜和磁性电阻膜的上部屏蔽膜 各自具有比轨道宽度宽的宽度，并且平行于上部磁性膜的空气支承表面的横截面在比空气轴承表面小于间隙深度的位置处减小。 薄膜磁头具有由第一磁性膜和第四磁性膜夹持的线圈导体，与第一磁性膜磁性连接的第二磁性体，与第四磁性膜磁性连接的第三磁性体和夹在 通过第二和第三磁性膜，其中与第二和第三磁性膜接触的绝缘和非磁性单膜至少覆盖第一磁性膜。

公开(公告)号：US06034847A

公开(公告)日：2000-03-07

申请号：US992089

申请日：1997-12-17

申请人： Matahiro Komuro ,  Tomohiro Okada ,  Masaaki Sano ,  Moriaki Fuyama ,  Hiroshi Fukui ,  Katsumi Hoshino ,  Takashi Kawabe ,  Yohji Maruyama ,  Atsushi Nakamura ,  Miki Hara ,  Noboru Shimizu ,  Noboru Yoshida

发明人： Matahiro Komuro ,  Tomohiro Okada ,  Masaaki Sano ,  Moriaki Fuyama ,  Hiroshi Fukui ,  Katsumi Hoshino ,  Takashi Kawabe ,  Yohji Maruyama ,  Atsushi Nakamura ,  Miki Hara ,  Noboru Shimizu ,  Noboru Yoshida

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/60 ,  G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/312 ,  G11B5/3967 ,  G11B5/6005 ,  G11B2005/3996

摘要： In order to prevent degradation of the recording performance during radio frequency recording, and to provide a thin film magnetic head and a recording reproducing sectional pattern magnetic head which has a magnetic pole width less than 2 .mu.m and an ultra high density magnetic storage apparatus of 10 Gb/ in.sup.2 grade, a recording head is provided in which a lower part magnetic film serves as a shielding film of a reproducing selection, a non magnetic gap film is formed during formation of the upper part magnetic film and the lower part magnetic film, one part of the lower part magnetic film or the upper part magnetic film has a higher resistivity of more than 80 .mu..OMEGA.cm than other parts, the upper part magnetic film is formed by flame galvanizing, and a gap section of the lower part magnetic film or the upper part magnetic film has a convex shape.

摘要翻译： 为了防止在射频记录期间的记录性能的劣化，并且提供具有小于2μm的磁极宽度的薄膜磁头和记录再现部分图形磁头和超高密度磁存储装置 10Gb / in2级，提供了一种记录头，其中下部磁性膜用作再现选择的屏蔽膜，在形成上部磁性膜和下部磁性膜期间形成非磁隙膜， 下部磁性膜或上部磁性膜的一部分比其他部分具有高于80μm欧米伽cm的电阻率，上部磁性膜通过火焰镀锌形成，下部磁性膜的间隙部分 或上部磁性膜具有凸形状。

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：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：US06490129B1

公开(公告)日：2002-12-03

申请号：US09663100

申请日：2000-09-15

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：US06278579B1

公开(公告)日：2001-08-21

申请号：US09345651

申请日：1999-06-30

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 flucuations of the reproduction output and noises for reproduction is disclosed. The forward end of each of a lower an upper magnetic 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 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和再现噪声的感应薄膜磁头。 每个下磁体和上磁芯的前端具有与轨道相同的宽度。 另一方面，下磁芯和上磁芯各自的后端比轨道方向的前端宽。 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：US08303732B2

公开(公告)日：2012-11-06

申请号：US12696074

申请日：2010-01-29

申请人： Hiroyuki Suzuki ,  Takao Imagawa ,  Yuichi Satsu ,  Matahiro Komuro

发明人： Hiroyuki Suzuki ,  Takao Imagawa ,  Yuichi Satsu ,  Matahiro Komuro

IPC分类号： H01F1/057

CPC分类号： C22C1/0441 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293

摘要： A rare earth magnet having a composition represented by RTB wherein R denotes a rare earth element, T a transition metal and B boron, the magnet being composed of magnet powder constituted by crystalline particles. The particles of the magnetic powder have a ratio of a short diameter being 10 μm or more to a long diameter is 0.5 or less. An element Rm having a magnetic anisotropy higher than that of the rare earth element is contained in the surface and inside of the magnet constituted by the magnet powder in an approximately constant concentration. An oxy-fluoride and carbon are present at boundaries of the particles of the magnet powder.

摘要翻译： 具有由RTB表示的组成的稀土类磁体，其中R表示稀土元素，T是过渡金属和B硼，所述磁体由由结晶颗粒构成的磁体粉末组成。 磁粉的粒子的短径为10μm以上的长径比为0.5以下。 具有高于稀土元素的磁各向异性的元素Rm被包含在以大致恒定的浓度由磁体粉末构成的磁体的表面和内部。 氧氟化物和碳存在于磁体粉末颗粒的边界处。

公开(公告)号：US20120111232A1

公开(公告)日：2012-05-10

申请号：US13351350

申请日：2012-01-17

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

IPC分类号： C09D7/12

CPC分类号： C23C22/02 ,  C23C18/00 ,  H01F1/0572 ,  H01F41/0293

摘要： A conventional method for forming an insulating film on a magnet has a difficulty in achieving sufficient improvement in magnetic characteristics due to nonuniformity of a coating film, and an extended time and higher temperature which are required in a thermal treatment. In order to solve the problems, the present invention provides a treating solution composed of an alcohol based solvent and a rare earth fluoride or alkaline earth metal fluoride dispersing in the solvent. In the treating solution, at least one X-ray diffraction peak has a half-value width larger than 1°. The present invention also provides a method for forming an insulating film using the treating solution.

摘要翻译： 在磁体上形成绝缘膜的常规方法难以实现由于涂膜的不均匀性而导致的磁特性的充分改善以及在热处理中所需的延长的时间和更高的温度。 为了解决上述问题，本发明提供了一种由醇系溶剂和分散在溶剂中的稀土氟化物或碱土金属氟化物构成的处理液。 在处理溶液中，至少一个X射线衍射峰的半值宽度大于1°。 本发明还提供了使用该处理溶液形成绝缘膜的方法。

公开(公告)号：US08119260B2

公开(公告)日：2012-02-21

申请号：US11189912

申请日：2005-07-27

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

IPC分类号： B32B15/04

CPC分类号： H02K1/02 ,  H01F1/0572 ,  H01F1/0577 ,  H01F41/0293 ,  Y10T428/32 ,  Y10T428/325

摘要： In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.

摘要翻译： 在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。